Showing posts with label Photography Tips. Show all posts
Showing posts with label Photography Tips. Show all posts

17 Dec 2014

Capturing London in Time-Lapse

I was recently involved in a fantastic photography project, involving 40 photographers and London. The idea was for each photographer to capture a little piece of London in time-lapse. It was organised by Haje Jan Kamps, the CEO of Triggertrap, a company that has created a mobile dongle and app that helps with taking time-lapse photography (among other things). A group of us met up on a beautiful sunny winter's day in King's Cross and had a few introductory presentations from Haje, Nicholas Goodden (a London street photographer) and Chad Gordon Higgins (a professional time-lapse photographer) before heading out to create our time-lapses.

Having lived in London for 20 years the options for venues seemed endless. I'd been mulling over a few ideas - St. Pancras station, Oxford Circus, but didn't feel they were quite right. I wanted to capture something that meant something to me, or that had featured in my time living here, so I headed to the Ebury Bridge just south of Victoria Station where there's a great view of the trains weaving along in and out of the station, but more importantly with Battersea Power Station (possibly my favourite building in London) in the distance. The light wasn't great, with the low afternoon sun obscured behind a building to the west and the power station now sadly mostly under scaffolding and surrounded by cranes and in a distant haze.

One still shot of the trains from Ebury Bridge


I set up my tripod, camera and intervalometer (I wasn't using the Triggertrap dongle and app, as I'd only learned how to do time-lapses the previous day, playing around with my intervalometer at home, so I didn't feel confident enough to try a different method!). I stood there for 25 minutes, taking a 1/15th second shot every 2 seconds. People with young children came and looked at the view and a couple asked me what I was doing. No-one seems to know what time-lapse photography is! In 25 minutes I took enough photographs for 30 seconds of footage, at 25 frames per second. Sometimes there were no trains for a couple of minutes, which I knew would result in gaps in the movement of the finished time-lapse, but that's just how it goes (and I knew that only a couple of seconds of footage would be used in the final cut anyway). Click here to see the full 30 seconds.

I took a bus a short distance to Sloane Square, another place I've spent a fair amount of time in during my time in London. It was a busy pre-Christmas Saturday afternoon with huge numbers of people, buses, taxis and cars passing by. I stood opposite Peter Jones and set the equipment up again, this time taking about 20 minutes' worth of shots. A photographer from Romford chatted to me for a while, which helped to pass the time as the shutter clicked away. Click here to see the result of that shoot - busy place! The man headed off east and I then wandered up the road a bit to the edge of Duke of York Square. I set up my tripod out of the way of the foot-traffic, but within minutes an officious security guard told me that I was on private land and had to move. I asked him where the public land started and it was about 4 feet away. I moved my gear the 4 feet but was now in the way of the people passing by, so people had to skirt around me. I was worried about people knocking the outside tripod leg, so I stood protecting it, taking up even more room. I didn't feel too concerned as it was a wide pavement, but oh it would have been so much easier if I'd just been allowed to stay where I was to start with (on private land)!

Even though buses passed that could take me back home and drop me outside my house, I had to head back to King's Cross to submit my work. The journey was pretty quick (fortunately no problems on the tube) and once back at the Triggertrap office they downloaded my shots and I chatted to a few of the team. Nico Goodden also showed up, having taken shots on a no. 10 bus to Hammersmith. I mentioned that I'd read his blog on camera straps that he'd been testing, and he said I could have any of the spare ones, so that was worth the journey back up there! I eventually headed home, chatting to fellow time-lapser Eddie Botsio, and downloaded the photos myself and uploaded a couple of the "videos" onto youtube.

It was a great experience, helping me to learn something new (there's always new techniques to learn in photography!), meeting some other inspiring photographers, and being part of a wonderful project. The final video has now been put together, and obviously I'm glad that some of my work got included - including a 3-second shot of the trains and a 1-second shot of the traffic at Sloane Square. There's some incredible footage in the final video including my two favourite bits - boats going through Camden Lock and the view from inside one of the Emirates cable cars going across the Thames. Nico's bus footage is pretty cool too.

Now that the final video is out, it's received loads of positive publicity, with Haje and Chad appearing on LondonLive this morning, and the video spreading around UK newspapers (eg the Independent) and websites (eg. the Londonist, Mashable). Here's the youtube version.


Thanks to Haje and team for organising - I'm proud to have been part of such a cool project and awesome result!

31 Jul 2013

Breaking the Photography Rules Part 3 - Turn it Upside-Down!

I used to work in Canary Wharf and for about 15 months I'd walk the four miles from Parsons Green to Westminster, before getting on a tube to complete my journey. The walk was mainly along the river (Thames), which I got to know and love, seeing it throughout the seasons, before sunrise and in bright sunshine as the year progressed. It was an unusually dry year, which meant that I often had my camera out (sadly only usually a point-and-shoot - if only I'd had my DSLR with me on a few more occasions...). I saw beautiful pink skies, dense fog, fantastic clouds and a few of the same people at the same spot each day. When I left the job I was sad to leave my daily river walks behind.


Anyway, one of my favourite things along the walk was seeing Battersea Power Station, standing proud (if a little shakily) on the opposite bank of the river, between the Victoria Rail Bridge and Vauxhall Bridge. I've always loved the building, since first seeing it on Pink Floyd's Animals album (accompanied by a pink flying pig). Walking along the river you get lots of different views of it - just the towers emerging behind Albert Bridge, then the whole body comes into view, and then once past the Victoria Rail Bridge it is there in its full glory. At one point it is directly opposite, squared on, with the four towers stacked symmetrically in front of you. And then it's back to the side view, with the morning sun lighting up the towers and the rather ugly new-build behind.


Occasionally the water is completely still and mirror-like. During my 15 months it only happened on a handful of occasions, but when it did - and when the river taxi or police patrol boat hadn't just gone past - the structure was almost perfectly reflected. The magnificent building was visible twice - once upright, and once upside-down in the water! First of all I used to capture the whole scene - Battersea Power Station plus reflection, but then it struck me - if I photographed just the reflection and turned the camera (or photo) upside-down I could get a very cool, kind of impressionistic version of the building. It happened so rarely that I only managed to photograph it a couple of times during that time, but I'm very glad I had my camera with me. If there was a little wave it added to the impressionist look. One occasion I remember vividly was taking the walk on my first day back after a holiday (often a depressing time), but the day was stunning and the reflections were beautifully clear.




Since those days a few years back I've looked for similar opportunities with other buildings or landscapes reflected in mirror-like water; I've seen a few, but none matches the Battersea Power Station reflection for me.

 
There probably isn't a photography rule saying "don't turn your camera (or photo) upside-down" but I don't think I've ever seen it suggested in a photography magazine or book. So, my advice is have a go - zoom in on the reflection and move yourself or your camera to look at it from a different perspective and the results might be quite interesting! And also look over some old photos with reflections - if they're portrait orientation and the reflection fills the bottom half, try rotating the photo 180° and cropping the reflection to see how it looks.

See also: Part 1 - Go Out in the Midday Sun
                Part 2 - Ignore the Thirds Rule of Composition
                Part 4 - Shooting Landscapes in Portrait Orientation 
                Part 5 - Playing with the Zoom  
                Part 6 - Shooting Out of Focus

22 Jul 2013

20 Things I Wish I'd Done/Known/Learned Earlier in my Photography Career

Hindsight is an annoying thing. But hopefully it can be a useful thing for other people - learning from others' hindsight (ie. mistakes). Like a lot of photographers today I came into the field after pursuing it as a hobby for many years, photographing madly as I travelled around the world. I didn't get a degree in it and only attended a couple of courses, but my passion for it eventually pushed me to take it to a further level. There are so many things that I wish that I'd either known, learned or done earlier in my photography career and I thought it would be useful to share them. A few of these have already been covered in an earlier blog on general tips on improving your photography.

1) Don't be scared of your DSLR
For the first few years that I had my digital SLR I think I was scared of it. Although I knew how to use it I didn't have much confidence and as a result I often just used a compact camera. I put far too much trust in my compact cameras and used them when I should have used the SLR. Part of this was a lack of decent lenses (I wish I'd bought that 24-70mm L lens a long time ago). Part of it was just lack of practice - I'd do stupid things like not changing the ISO after it had got light and ended up with grainy shots in broad daylight, for example.

2) Don't buy the cheapest equipment
When I bought my first DSLR I went for almost the cheapest one available (the Canon 400D). It's not a bad camera, but it's definitely not a great one either. There were much better ones on the market and I could have afforded them, but it just didn't cross my mind to make the leap to a higher level one. The more expensive cameras generally have far better low-light capabilities, with less grain at higher ISOs, which can make a world of difference.

The same goes with lenses. I went to Africa years ago (in the days of 35mm film) and bought a basic 90-300mm lens, thinking I needed a long zoom (back in those days I thought that £289 for a lens was a lot of money!). Most of the images I took at 300mm (without a tripod) were far from being sharp. I should have spent a lot more buying a shorter, faster lens (I now use a 70-200mm). Small and sharp at 200mm is so much better than big and blurry at 300mm! Going back to Africa costs a lot more than investing in a better lens would've done.

Also bear in mind that not all lenses can be used on all cameras. I invested in a couple of Canon EF-S lens (a wide angle 10-22mm one and a 60mm macro one), which I now cannot use on my full-frame 5D Mark III. If you think you'll one day buy a full-frame camera then don't buy a lens that you can't use on it! Obviously I can still use the lenses on my old Canon 60D, but if I did it all again I'd give the EF-S lenses a miss and invest in better glass earlier.

3) Read photography magazines
I've learned an awful lot of interesting techniques from reading photography magazines, but I wish I'd discovered them earlier. I've picked up tips that I had no idea I needed, techniques I didn't know existed. They're also really useful for some ideas for photography projects and trying out things you haven't done before. They have great in-depth reviews of equipment too (which can also be found online at sites such as dpreview.com). Looking at photo websites (eg. Flickr) is also a great way to learn - look at the EXIF info of the photos you like to see what settings people have used (and ask them about them). I started playing around with ND filters only after reading about them in photography magazines.

4) Experiment with filters
I can't believe that I survived for so long shooting without a graduated neutral density (ND) filter! All those years with washed-out skies! The grad ND filter is probably my most-used filter. No-one wants a washed-out sky and dark foreground, and I don't want to spend hours trying to fix images during post-processing or creating an HDR image from three to compensate. I also use a circular polarising filter which is fun to play around with - intense rainbows, weird blue sky, fewer reflections (in water and windows), etc. I had one of those early on but didn't think it did anything other than darkening an already blue sky. The most fun filters, I think, are the full ND filters which allow you to use longer exposure times. Long exposure allows you to be far more creative - creating light trails, smooth water movement, sweeping clouds across the sky, etc. You might not need filters for light trails if it's dark enough, but you definitely will in bright light. For any long exposure stuff you have to use a tripod (or put the camera down on something so it won't move!).

5) Use a tripod
Handheld shots in low light will result in blurry images or will be grainy if you've cranked up the ISO to compensate. I have many of those from my early days. Zoomed shots need to be extremely fast in order to be sharp (if you're using a zoom of 200mm you'll generally need a shutter speed of 1/200 second of quicker to prevent camera shake). Using a tripod will help you to shoot at a nice low ISO with a slower shutter speed and get sharp images (also use a remote shutter release or timer to prevent shake). It's not always practical to have a tripod with you, but there are some lightweight ones available. In the days before I had camera plus lens weighing almost 2kg I used to use a heavy-duty gorillapod, which is pretty good if you're out hiking (or walking to your day job) and don't want to carry a bulky and heavy tripod. There are also lots of compact lightweight tripods on the market too, but they won't be great with heavy lenses or in wind, especially if you're shooting portrait shots (the camera and lens slowly fall downwards due to the weight).

6) Learn to recognise bad shots and learn from the mistakes
I can't stress this one highly enough! I used to work in banking and walked 4 miles each morning from my home in SW6 to Westminster, along the River Thames, before getting on the tube to Canary Wharf. This is when I started carrying a compact camera with me almost all of the time and began shooting a crazy amount of shots (arriving later and later at the office in the process). I'd review the shots and do a bit of post-processing and then post some on Flickr, Facebook, etc.. What I didn't really do, though, was review them properly, with a truly objective, critical eye. What I do now, with every shot that I like, is to increase the size on the screen to 100% and see if they are sharp enough. If I'd done that with my old compact photos I would've made more effort to use my SLR and carried it with me a lot earlier, given that the compact photos are rarely that great when zoomed right in.

For landscape photos I recommend doing the same - zooming the photo in to 100% and looking at the detail in the foreground, mid-ground and far distance. If it's not sharp and in focus try to work out why. Was the focus point wrong (see point 8 below)? Was there camera shake because the shutter speed was too slow or you weren't using a tripod? Was the depth of field too small? By analysing what you did wrong you can learn to do better the next time. Don't just say "oh it's good enough" when it's not. You'll never learn to improve unless you're critical and honest with yourself. I made that mistake at the beginning.

Carry the SLR with you, review your work properly, learn from your mistakes and then delete rubbish photos!

7) Use editing software properly
Some people are purists about not doing post-processing, but I think that a small amount of post-processing probably helps the majority of images. However, it shouldn't be overdone. It doesn't have to entail much, just a quick correction of curves, tweaking the contrast and checking whether the white balance, picture style and saturation are right for the shot. Don't over-do the saturation. Don't lighten the shadows too much so it looks fake. In the beginning I was guilty of doing this and have some pretty ghastly, lurid images!

8) Make sure you focus on the right spot
This sounds like an obvious thing, but it's not as simple as it sounds. In landscape photography you want everything in the shot to be in focus. It's important to understand where you need to focus in order for as much as possible of the image to be sharp. The hyperfocal distance is roughly a third of the way into a scene and trying to get this right will give you the most chance of getting the whole image in focus (using an aperture of at least f/11 on a cropped-frame sensor camera or f/16 on a full-frame sensor camera - don't go too high on the aperture as you may then get problems from light diffraction). I sometimes used to focus on something too far away or too close, resulting in out-of-focus parts in the foreground or distance, respectively. To begin with I had no idea about the hyperfocal distance! I hadn't heard about it until I started reading photography magazines.

9) Clean your sensor
I have spent far too long in post-processing in the past cleaning up dust spots, because I had a dirty sensor. Cleaning your sensor is not as scary as it sounds and saves you a lot of time doing tedious post-processing (check out this great article on how to do so). Unfortunately you can't take the cleaning fluid on planes, so for long trips it's not possible. Be very careful when changing lenses to prevent dust getting in. Never change lenses in dusty places! On some trips I used to change lenses too often, which probably made my dust problem worse. I wasn't even aware of the dust spots to start with either, until I started reviewing my images more thoroughly (see point 6 above!). EDIT 300115 - just discovered the Eyelead gel cubes - gets rid of every spec of dust. See my blog about it here and disregard the above about using swabs!

10) Camera equipment is heavy - get over it and carry it!
I often read "your photos are only as good as the camera you have on you" or something like that; the point being that it's better to carry a compact and take mediocre shots than not carry your SLR and take no shots at all. This is obviously true, but I used to take too many shots on my compact and as a result didn't build up my trust in and abilities to use the SLR. Yes camera equipment is heavy and bulky (and the better the equipment, generally, the heavier it gets) but you have to get over it and carry it. I used to leave my SLR at home on weekend trips away (which I would never dream of doing now). Now I pay the extra baggage charges to check my normal luggage in on planes so I can carry on my DSLR and lenses (with a laptop this lot usually takes up my whole hand baggage allowance).

11) Shoot in RAW & in aperture mode
I didn't start shooting in RAW when I first started using a DSLR. I don't know why (saving on memory, perhaps), but I wouldn't dream of not using it now. It just gives you so much more scope to correct slightly off exposure, white balance, sharpening etc.. I also didn't use to shoot in aperture (AV) mode. For almost all shots now I want to control the depth of field, so I shoot in AV to ensure I get the depth of field that I want, adjusting the ISO and shutter speed to ensure it's correctly exposed. Sometimes I have to add an ND filter to allow me to use a desired AV setting, eg. if there's too much light.

12) Don't skimp on memory cards
Unfortunately I had my first digital point-and-shoot in the days when memory cards were ridiculously expensive, so I travelled around the world shooting with really low resolution (some of my photos are something like 80kb!!). Now I shoot on the maximum possible and have a stack of 16gb and 32gb memory cards (each RAW photo takes up about 30mb now). If you're going travelling for a long time, think about taking a portable hard drive with you and joining some system where you can upload photos to store them securely (eg. Flickr) - the photos don't have to be viewable to the public. Also invest in spare batteries if you're going to be away from electricity for a while.

13) Shoot in public
I used to be scared to take photos in public! I felt self-conscious, I didn't want to intrude, etc.. Now I will ask people if I can take their photos, or just stand in the street (sometimes with my tripod) and shoot the scene. Talk to people! The only way to get over your fear of taking photos in public is to do it! Maybe take a friend out with you the first few times. Street photography provides so much scope for interesting shots and unique moments so it's definitely a fear worth overcoming. And if you ever want to sell photos of people commercially then you'll need a release form, so you'll have to talk to them!

14) Photography can be extremely anti-social
As I came into photography via the hobby route I used to combine it with travelling & holidays. As I became more serious about it I realised that it was becoming more and more time-consuming. My husband began to get more and more bored and irritable as I was always lagging behind to photograph something, or wanting to go out of our way just so I could get a shot, and so on. I still combine photography with holidays, but I now go off and do it on my own too. It is anti-social. It is time-consuming. The hours are not great (sunrise is usually at a silly hour). If you're doing long exposures it makes the whole thing even more time-consuming. So my advice is to go away on your own, go out shooting on your own, and get your partner to understand that you'll need some time to go off on your own for a bit. Don't expect your friends and family to sit around and wait while you shoot. And remember to leave your camera at home sometimes - you don't want to become a complete bore by always having the camera with you and snapping away incessantly.

15) Get up early
One of the most peaceful times of day, as well as a great time for photography, is first thing in the morning. I used to be a bit lazy about this before, but then my walk to work really made me understand that early morning is a wonderful time to be out. Nothing compares to the peace and light in those first couple of hours of daylight. In the late autumn in London it's often foggy in the morning, which can make for spectacular shots. Make the effort to get out early sometimes.

16) Break the Rules
I probably always did break some rules, but probably not all of them; it's good to be adventurous. Shoot into the sun (those light flare shots are very fashionable at the moment!), move away from the thirds composition, handhold to get some intentional blur, shoot landscapes in portrait orientation, shoot out of focus to get interesting effects, shoot in the midday sun (I do get a bit bored with every single landscape shot being photographed in the "golden hour" with that reddish-orange glow), shoot in the rain, exclude the sky from landscape shots, use a telephoto for landscape instead of a wide angle, turn reflections upside-down, and so on. By being adventurous it helps to find your own style earlier on.

17) Be careful what you share
The internet has become a bit of a free-for-all and most people clearly either don't understand copyright laws or just don't have any decency when it comes to stealing photos. People will pull your photos and put them on blogs, Tumblr, etc.. stripping out any link to your original. If you do want to share your photos online, think about adding an almost-transparent watermark (so it doesn't totally ruin the shot) and only upload low resolution versions. I used to post a lot of photos on Flickr without any watermark and some have been widely used, without any permission or recompense for me (some even on commercial websites).

Similarly, if you enter photography competitions make sure you read the rules, as with some of them you hand over most of your rights just by entering, even if you're not shortlisted. I used to enter a lot before realising that they're just using the competition to get lots of free photos to use at will.

18) Don't give up the day-job
Photography is extremely hard to make any money in, and in order to do so you need to be extremely good at self-promotion and marketing and you'll need a fair amount of savings to supplement your income (or someone else to fall back on), at least to begin with. If you want to make a living out of it, consider commercial areas like weddings and portraits. Consider trying to do it part-time with a proper day job, if that's possible. You're unlikely to make a decent amount of money as a photographer. It's not about the money, but you still gotta eat.

19) Don't be flattered when people want your work for free
And on that note... I've lost count of the number of times I've been approached by organisations asking me to provide images for free, in exchange for "exposure". As this wonderful little film illustrates, exposure doesn't pay bills. By all means do a bit of free stuff from time to time - for charities (although remember that employees often get paid, so there is often money out there), for friends (while you're learning anyway), in exchange for accommodation, etc.. Make sure that you're getting something from it and not just "exposure". I've made this mistake a couple of times and really haven't got any exposure out of it at all. You live and learn from these experiences though.

There are lots of other photographers out there that want exposure and so photo "buyers" will continue to search the marketplace for freebies. Remember that photography requires expensive equipment and is very time-consuming, but also that it requires a huge amount of experience & expertise, so don't sell yourself short. A budget may just appear if you turn a freebie down if they really want your work (although they'll probably just go somewhere else for a free image!).

20) Learn how to quote for a job
This is a tricky one and will take a bit of time to get the hang of. I learned the hard way with this too - be very careful what you quote someone and be realistic about how long you think a job might take. Be very specific about what's expected, what the photo usage is, etc.. A job I thought would take me a couple of days ended up taking me a couple of weeks, on and off. Remember when pricing a job to take into account the day rate of taking the photos (the creative fee) but also the processing time involved and the end-use (licensing) of the images. You should generally keep the copyright of the photos. Make sure the terms are laid out and the other party understands all of this too; often clients have no idea about the T&Cs.

I hope some of these have been helpful - would be great to hear about other people's experiences and what you've learned from hindsight.

2 Mar 2013

Why I Love Long Exposure Photography

Lots of people love it. Lots of people hate it. I'm one of the former.

Long exposure is a technique that seems to bring out mixed reactions in people, in the way that the use of HDR and some other photoshop methods do too. Sometimes it can seem as if every image of water has used it - that milky look is everywhere! It doesn't look very natural; it doesn't represent what the eye sees. However, used in the right situations it can make the appearance of water far more pleasing to the eye. It can make clouds look far more dramatic, stretched across the sky. It can bring a dreamy look to a shot that would be a bit dull if static. You can get rid of people in a busy street, or create interesting movement blur. Light trails can stretch across a night or dusk shot. During daylight hours, it's usually only possible with the help of a filter or two.

I started to use neutral density (ND) filters a few years ago - beginning with a graduated one to combat too-light skies and too-dark foregrounds, and eventually moved on to quite dark ND filters that have enabled me to produce long exposure shots. My collection has grown, and I now own the ND graduated one, and three pieces of what's sometimes called "black glass", varying in their blackness. The first one I got is probably my favourite - the B+W 10-stop ND filter. This allows me to shoot for 30 seconds or more in broad daylight and capture moving clouds and smooth water. I found it a bit restrictive (too dark sometimes), though, so added a 6-stop and eventually a 3-stop to my collection, allowing me to have more control over the creative process (more aperture/exposure length combinations were now possible). Occasionally I'll combine a couple of the filters to create an even longer exposure, or something inbetween what each one would allow on their own. I also use a circular polarising filter, which can also have the effect of reducing the incoming light, allowing slightly longer exposures again.

Below are a few examples, comparing normal shots with long exposure shots. The first pair was taken just after sunset in the Cairngorm Mountains in Scotland at the end of April 2011. The first shot was a 2-second exposure (not exactly short, but not that long either), just using the graduated ND filter. The second shot is a 52-second exposure, using the graduated ND filter and the 10-stop filter. They're both taken at 10mm on a cropped-frame camera, and I had to crop the shots as there was a bit of the edge of the filters showing (you cannot shoot that wide when you have filters stacked at the front of your wide-angle lens).


This was the first time I really got to play around with the 10-stopper and I loved it! My opinion is that the second image looks far more atmospheric and pleasing to the eye. As the water was still, there's not a great deal of difference there, so most of the effect is in the clouds. We camped just next to this little lake, and I almost got hypothermia in the process of taking a long series of similar shots (always wrap up warm when taking time-consuming long exposure shots outdoors - especially in Scotland in April).

In the second example, the big difference is in the appearance of the waves. These shots were taken at Jökulsárlón beach in south-east Iceland, in March 2012. The black volcanic sandy beach is littered with icebergs of different shapes and sizes that drift into the sea from the nearby lagoon, at the head of which is a calving glacier. The first shot is a 1/50th second exposure (pretty quick!) and the other is taken with the 6 stop ND filter (I think - I didn't write down which combination of filters I used for each shot) and is 3.2 seconds long. Personally, I think the 3.2 second exposure is much better, even though there's no impression of the strength or power of the waves. It just looks nicer to me.

 

Waterfalls are a prime subject for long exposures. At normal exposures the water is captured in motion (in fact to get a waterfall really sharp you need an incredibly fast shutter speed - not always possible if there's limited light otherwise). Slowed down just a little results in a nice smooth line of water. Again, whether you like it or not comes down in part to personal preference. This example is from Svartifoss, also in south-eastern Iceland, taken in March 2012. The first shot is 1/50th second exposure again and the second is 4 seconds long. I think I prefer the longer one, although actually I'm not completely sure on this one. This is why I always take some without the filters on, to ensure that I capture the shot firstly as I see it, and then with the creative twist, to see which one I prefer.

  
Long exposure doesn't work in every situation, especially if there are moving things, like tiny bits of ice floating, or trees moving, which can end up just looking messy. Sometimes this can work - reeds blowing in the wind look good, for example, but sometimes it doesn't. It's not a science, and that's another reason I like it - playing around with the different effects is interesting and fun and the results can be surprising.

There are a few things to bear in mind when taking long exposure shots that I thought I'd end with.
1) You must have a tripod, or something secure to rest your camera on. I also use either a remote shutter release or a 2-second timer delay. Any camera shake will blur the otherwise-sharp surroundings. You might also want to set the mirror lock-up, but I haven't found that this makes a difference.
2) Some filters produce a slight colour-cast. As you can see in the waterfall example there is a slightly pink hue. Sometimes with the B+W 10 stop this is extremely noticeable. I can usually correct this by adjusting the white balance, but sometimes it's quite difficult to get a realistic colour!
3) Always shoot in RAW, so that you can do the adjustments to white balance, exposure, etc. 
4) If you've got stacked screw-in filters on a wide-angle lens, you probably won't be able to shoot at your widest, as the filters will show in the far corners. Try to buy filters that are as flat as possible (the B+W ones are fairly flat, but cheaper ones aren't!).
5) You may need to check the results for hot/dead pixels (during post-processing) and use a stamp/clone tool to remove any. These may be white or coloured. On my last camera - the Canon 60D - I had lots of these (white, blue and red), and the longer the exposure, the more I could see. It was also worse at higher aperture settings. I haven't done a great deal of long exposure work with my Canon 5D Mark III, but I'm hoping it won't be as bad, as it can be quite time-consuming to have to do this.
6) Make sure your sensor is clean. This is an obvious one, but I overlooked this before I went to Iceland last year. As a result, anything with an aperture of over about f/8 (ie. all my long exposure landscape shots!) will show any dust on the sensor as a round grey splodge on your shot. Again, mostly these can be removed using a stamp/clone tool, but it's a real pain. I had dozens of them on my shots from Iceland in 2011. It resulted in me researching about cleaning the sensor and investing some time and money in finding a solution (check out this article (point 10) for advice on this!).
7) Buy the best filters you can afford. They come in screw-in ones like the B+W, or square ones that need to be attached with a clamp. I went for the former option, mainly because I bought one round one and then didn't want to invest in a different system! Think about which might suit your way of working. The screw-in graduated ND filter is not ideal, as you cannot alter the place in which the dark ends and the clear begins - it's bang in the middle. You can twist it round easily, but if your sky's taking up 2/3 of the shot then part of it will be darkened but not all of it. With the clamp system then you can mount it at the right place according to where your horizon is. Some of the filters are seriously expensive (I think the B+W 10-stop was about £120), but they do vary from seller to seller, so it's worth shopping around. They come with varying different coatings, some of which are supposed to last better than others; this also affects the price quite dramatically.
8) Play around with a combination of different filters to get the right exposure length/aperture for the shot you're looking for. If you have screw-in ones and they get stuck, try rubber gloves to get them off (see this article for advice on this!).
9) As it gets darker you will need less glass and longer exposures. By dusk you probably won't need any filters, or maybe just a couple of stops, depending on the effect you're after (see image below, taken without a filter).
10) Use the bulb function if you need to take photos of longer than 30 seconds, and use a remote shutter release button.
11) Have a play around with different aperture/exposure length settings. I usually shoot in aperture priority (AV) mode, but if I'm doing long exposure shots I might use the time priorty mode (TV) or completely manual. Some people have produced tables about what settings you need to use, but I prefer trying a few out to see what I like. It can be quite time-consuming though.
12) Wrap up warm - it can take a long time to take these shots.
13) Go alone - taking long exposures is quite an anti-social habit. I now have to go on photography trips on my own ;)
14) Don't get completely carried away! Take some normal, filterless shots too. It's good to be able to compare the difference to see which you prefer. Plus it's far more sociable if you're with someone.

There's a great article by Peter Hill with loads more detail on ND filters, which helped me get the hang of it to start with - really worth having a look.

For more examples, have a look at the Long Exposure Gallery on my website. And let me know if you have any additional tips or comments!

12 Feb 2013

Back-button Focusing

One thing that always fascinates me about the world of DSLRs is that there's always something more to learn - new techniques and new functions just lurking there, waiting to be discovered, hidden in the bowels of your camera's custom function menu!
So I was quite surprised to learn about back-button focusing recently, or rather I was surprised that I'd never heard of it before. I'm not one to read through every page of the camera manual when I invest in a new one, but my recent discovery has led me to believe that maybe I should. There's a lot more to these cameras than initially meets the eye. Perhaps I should also buy the "...For Dummy" books.

I stumbled across this functionality when researching the focusing on my new Canon 5D Mark III. Going from a reduced-frame to a full-frame and from 9 to 54 focus points has provided me with some new challenges, and I found I was initially getting quite a few totally out-of-focus shots when I was taking action shots with the new beast. A bit of googling led me to some articles about back-button focusing, and now I'm bemoaning the fact that I'd never discovered this before (or even heard about it) - it's been a function available on Canon cameras for decades!

So, what is it? Simply put, it is focusing using a button at the back of the camera, rather than using the shutter release button to focus.

Okay, so why is it helpful? Well, here's an example of where it comes into its own. You're trying to get a shot of your dog running around the park. In order to take the shot, first you press the shutter button down half-way to get it to focus, and only then can you take the shot. Often by that point the subject's moved out of the focal plane and all you've got is half a blurry tail at the edge of the frame! By splitting the functionality of these two processes (focusing and shooting), you can do each of them independently and simultaneously. This means that you can focus and re-focus continuously while also shooting a series of rapid shots (and with the Canon 5D Mark III this is about 5 frames per second).

The results? Far more control over focusing of the shot as the subject moves, while still being able to take the shots quickly. It basically means that the camera is capable of doing these two separate tasks simultaneously, resulting in a much higher hit rate. That, coupled with the different tracking focus functions on the 5D (for different levels of acceleration/deceleration and rapid changes in direction, etc.) mean that photographing moving subjects is far more successful.

So how do you do it? On the 5D Mark III there are various buttons along the top right at the back of the camera, and the purpose of these buttons can be changed, with different functions assigned to them. A bit of digging around with the different options (custom functions) shows you that all sorts of functions can be assigned (from focus to exposure to image quality to other operational features such as electronic level), but the focusing seems by far the most useful one to me (and the AF-ON button the best one to use, since the other two are pretty useful as AE lock and focus point adjustment).
On the Canon 5D Mark III, then, you have to do the following:
1) Go to Menu, scroll along to the Custom options, then select C.Fn2: Disp.Operation, scroll down to Custom Controls, then press SET
2) With the top left option (Shutter butt. half-press) highlighted press SET, then select "Metering Start", the middle of the options (this removes the focus functionality from the shutter release button). Then press SET again to return to the menu.
 
3) To set the focus functionality, scroll down one button to the AF-ON option (second on the left hand side) and press SET, then ensure that it's set to "Metering and AF start" on the left hand side - this assigns the focus function to the AF-ON button. Press SET again to register this setting, then press the MENU button a couple of times to come out of the custom function options.
 
4) Then you're ready to go - you'll need to press the AF-ON button to focus, probably with your thumb. It takes a little time to get used to, but it seems so much more useful and effective, especially if you're taking shots of moving subjects.  Even with stationary objects it's a great way to focus. FYI - once you move you finger off the button the focus is set, so this is useful if you want to then re-compose your shot. Remember to tell anyone who borrows your camera!

When shooting moving subjects it's also important to have the AF-DRIVE set to AI SERVO, and useful to have the High Speed Continuous setting on in order to capture as much movement as possible. Another thing to play around with is under the AF options in the menu, which gives you different tracking sensitivity, acceleration/deceleration and AF point auto switching - all of these depending on the type of moving subject that you're trying to capture.

The functions on the Canon 60D (my other camera body) are as follows:
1) Go to Custom Functions and choose option IV; the default (with focusing on the shutter release button) is option 0.
 
2) To adjust it to assign the AF-ON button with focusing (and removing it from the shutter), scroll down to option 1:
 3) Then continue as above, using your thumb to press the AF-ON button to focus and the shutter release button to actually take the shot!

As far as I'm aware, this functionality is available on all the major DSLR bodies. I just wish I'd found it years ago! Please share if you find this useful, or let me know of any other useful tips you have.

14 May 2012

13 Tips to Improve Your Photography

There are lots and lots of articles published on how to improve your photography, and everyone has their own ideas.

So I thought that I'd add my own list of things that I think have improved my photography over the years. There's quite a lot of detail, so you may just want to skip to the relevant bits. Oh, I’m a Canon girl, so any reference to equipment here is Canon!

Here’s the basic list:

1)               Understand Exposure
2)               Shoot in RAW
3)               Shoot in aperture priority (AV)
4)               Check your settings
5)               Compose slowly
6)               Get your focus right
7)               Get one good lens
8)               Use filters
9)               Use a tripod
10)           Make sure your sensor is clean
11)           Post-process
12)           Read photography magazines, blogs, Flickr
13)           Practise!

1) Understand exposure

This is a big one. Photography is all about light and photos aren’t possible unless enough light can reach the sensor. If there’s too much light, then the photo will be over-exposed (often with “clipped” highlights, where parts are white, lacking in any detail, and look blown out) and if there's too little light then the photo will be under-exposed (often with “clipped” shadows, where parts are black and therefore lacking in any detail). Most DSLRs are pretty good at measuring the exposure needed for some shots, but there is a massive range of circumstances in photography where the camera just can’t get it right. For this reason, often we need to compensate by over- or under-exposing a shot, making manual adjustments to the exposure that the camera suggests. All cameras allow you to do this, and it’s definitely worth learning where the dials are on your camera to let you do this.

But back to the basics first. There are four variables involved in exposing an image – the amount of light available (which you may or may not be able to control - by using a flash, using a reflector, moving to a different spot, waiting for the light to change, etc.), the aperture (see section 3 – this is the hole which controls the amount of light getting through the lens to the sensor, and you can adjust this, within the capacity of the lens), the shutter speed (which determines how long the shutter is open for, and you can adjust this) and the ISO (or the equivalent of the sensitivity of the film, which you can also adjust – broadly, the lower the light, the higher the ISO needed, and the higher the noise in the final image).

Different settings of one of the variables will impact the others, and the camera will automatically try to determine these if you shoot in either the AV (aperture priority) or TV (shutter speed priority) modes (it’ll calculate the appropriate value of the other to use). Different combinations of aperture and shutter speed settings will lead to the same amount of light being allowed in, but there will be differences to the overall appearance of the image because the depth of field will vary (see section 3). The exposure that the camera meters may also not be correct. The metering depends on where the camera’s taken the reading from (there are various settings you can choose – spot metering (where it meters the light available based on one point), or evaluative, partial, or centre-average metering (where it meters the light available at various points)).

You may then need to over- or under-expose if the photo looks wrong. You could change the area where you have focused on as this might have given a wacky light reading (eg. if there’s white sky or snow, the camera will try to compensate and under-expose). I had a photography teacher when I was first trying to understand how to use an SLR (back in the film days) who suggested that to get the right exposure find something grey to focus on (or carry a grey card and use that) and then fix that exposure (there should be a button on the camera so you can do that!) and use that exposure to take the shot.

Once you’ve taken a shot, you still may find that the range of light in the scene is just too great for the camera to cope with - that the dark bits are too dark and the light bits are too light (this is called the high dynamic range, and has led to the method of combining shots with different exposure levels to try to get lighter dark bits and darker light bits, so it represents what the human eye sees. Sometimes it can work well, other times it’s horrid!). The camera is not as clever as the eye, so sometimes it just isn’t possible to capture or expose correctly. Some filters can help with this (see section 8 for some help on how to eradicate over-blown skies).

Getting to know and understand a histogram is very useful as a way of learning whether you are exposing correctly or not (other than just reviewing a photo to see if there are white and black patches). The ideal histogram should be a fairly standard bell curve, but often your photos won’t come out like that. If the shot’s been overexposed a little, the curve will be skewed slightly to the right of centre, under-exposed it’ll be on the left. Clipped highlights or shadows will show as peaks hitting the top of the histogram and should be avoided. There are sliders on post-processing software at the edge of the histogram, so you can move these over to the edge of the curve, which sometimes helps with exposure errors (it might be useful to use the “auto-levels” function to see how it impacts the histogram before trying it yourself at first). Some photographers actually recommend "exposing to the right", ie. over-exposing a little, to ensure that you get the detail in the shadows, but no so much as to clip the highlights, before reducing the exposure in post-production, but this comes down to personal preference.

The other tips below should all help with the endless task of exposing the shot correctly! Oh, but remember that whole books have been written about this subject, so it's not something you'll understand or be able to do overnight. An awareness of the pitfalls is useful though! And practice helps too (see section 13).

2) Shoot in RAW

What is RAW? Simply, it’s the uncompressed version of the image (jpegs are a compressed version). Why use it? Because you can make various adjustments to the images that are not possible in a jpeg, namely change the white balance, picture style and the exposure. If you’ve under-exposed a shot, then just bump the exposure up a bit! Taken a photo and the colours look wrong - change the colour temperature (white balance). It works much more effectively than trying to make these adjustments to jpegs. You can also adjust contrast, brightness, lighten shadows, saturation, adjust sharpness, etc. that you can also do in jpeg. Downsides? It takes up a lot more memory, and you have to convert it to jpeg in order to share it (usually). I very much regret not taking my early DSLR photos in RAW format - I would have been able to correct a few early mistakes. Any camera that has RAW capability (including the higher-end compacts) will also provide software for processing RAW images – eg. Digital Photo Professional is Canon’s version.

There's a great, more detailed description of RAW and comparison with jpeg here.

3) Shoot in Aperture Priority (AV)

What is aperture? As already mentioned, it is the hole through which light passes before it reaches the sensor. The wider an aperture is open, the more light the camera receives. In photography there is a numbering system, with the lower the f-number, the wider the aperture, eg. f/1.2 is very wide open, giving lots of light. A high f-number (e.g f/16) will only have a tiny opening, allowing very little light to reach the sensor (also know as "stopped down"). The aperture will therefore affect the shutter speed needed, the depth of field in the scene and the ISO needed (like the old film speed).

Why shoot in AV? Because the camera automatically finds the correct speed needed to correctly expose the image (within reason, discussed above), using aperture priority gives you a lot of control over how the image will look, eg. if you want to isolate an image and have the background all blurry (shallow depth of field) then you’d use a wide aperture. If you want to take a nice sharp shot of a landscape with the whole scene in focus (as far as possible) then you’d use a narrower aperture, with an f-number of f/11+. The exact number required will depend on the camera, the lens, the subject and the light conditions – if you have a low to mid-range DSLR (with a cropped frame) then f/11 will probably allow you to get the whole of an image in focus. If you have a high-end DSLR (full-frame) then you’ll need to push the f-number higher, eg. f/16. Going higher than that might be intuitive, but then light refraction gets in the way and the distant area becomes a bit blurry. Plus, the higher f-number/narrower aperture you have the more any dust spots you have on your sensor will show up (very time-consuming to clone out - see section 10 on cleaning your sensor to avoid needing to do this!).

The only time I ever shoot in shutter speed priority mode (TV) is if I'm doing a slow or long exposure shot, with the purpose of getting movement blur, milky water, smooth waterfalls, light trails, etc.. (and even then, I will make sure that the AV is still appropriate for the shot, which usually means that I need filters – see section 7), or if I want a moving image captured or frozen, then I'd use a very high shutter speed (and a corresponding wide aperture would be automatically applied by the camera to expose correctly).

4) Always check your settings before you shoot, eg. ISO

Ever taken a photo at night and pushed the ISO right up so you didn't have to use the flash and then forgotten about it and taken photos the following day and wondered why they are so grainy? Or climbed a mountain to see sunrise and forgotten to push the ISO back down once it's light? I have - very annoying, and avoidable.

You don’t want to be shooting in bright sunlight with an ISO of 1600. So, always check the ISO before you start shooting (I never use automatic ISO, but if you do, then this won’t matter so much). Always check that you have the right aperture and shutter speed that are appropriate for the type of shot that you’re trying to achieve too. Same with White Balance: if you've been using it the night before on a tungsten setting, things will look pretty nasty and blue (you can adjust it if you've shot in RAW, thankfully). I guess these all come down to making sure that you've got the exposure right (see section 1!)

5) Compose slowly - check for clutter in the background, rule of thirds, etc. 

Taking time to check all your settings leads me nicely on to my next piece of advice – try to compose carefully, so as to ensure that you don’t have bits of limbs cut off, trees sticking out of people’s heads, massive amounts of empty pointless sky, etc. One well-known rule for composition is the Rule of Thirds – to ensure that you have the focus of attention at the intersection of these imaginary third lines going across and down the shot. On some cameras you can show these on your screen to help with this.

There are obviously exceptions to this – eg. reflections, where it can often work to have the horizon line in the middle of the shot with the reflection and the thing being reflected in the thirds below and above, like this. If I’m taking landscape shots and the sky is incredible but there’s nothing much in the foreground I sometimes have the horizon right near the bottom of the shot (not at the third line) and if the sky’s boring I might only show a touch of it (or none!), like this. If you take photos of people, animals or vehicles moving, it’s nice to have somewhere for them to move into, so make sure that they’re on one side of the shot with some space for this “future movement.”

Avoid clutter. Make use of patterns and leading lines. Focus in on interesting details. Stop to think "what would I call this photo?" and if you can't think of anything interesting, then maybe it's not a very interesting shot! Re-compose and try again, perhaps. Just an idea.

6) Get your focus right.

This might sound extremely obvious, but getting focus right is extremely important and isn't always as easy or intuitive as you might think.

For landscape photography it is important that the whole of the image is sharp (unless there's some creative alternative desired). There is a point called the hyper-focal point, where everything behind that point (towards infinity) and half of the subject-matter in front of that point, is in focus (assuming you're using the correct f-number, as above). Here’s an example of what would happen if you didn’t do this. You have a field with a few bits and pieces in it, and in the distance is a line of beautiful trees on the horizon. It might be natural to focus on the trees on the horizon, as they are the most interesting thing in the shot, but then too much of the foreground is going to be out of focus, making the whole shot look slightly off. If you focus about a third of a way into the scene (a very rough way of estimating the hyper-focal distance) then you should get far more of the scene in focus, including the trees and most of the foreground. If the auto focus doesn't work (sometimes happens if the scene is too uniform, such as grass), then switch onto manual focus and try to get that point yourself. Obviously if there's something in the foreground that you specifically want to capture, then focus on this (but then you may want a shallow depth of field anyway).

For portraits of people and animals by far the most important spot to focus on is the eyes. Blurred eyes ruin portraits (again, unless it’s a creative shot with the focus on something else on purpose, eg. a close-up of a dog’s nose with a shallow depth of field where you want the rest of the head to be out-of-focus). The shallower the depth of field, the more noticeable this becomes and therefore more crucial that you focus on the eye.

I never use the automatic focus points option on the camera, but choose one focus point which is most appropriate for the subject. For landscapes I’ll usually use the bottom, middle focus point, as this will be closest to the hyper-focal point. For portraits, the top-left and top-right often work well if the subject’s eyes are in the upper part of the shot, off-centre. You can also recompose the shot once you've pressed the shutter half way down and focused (if you're using the One Shot focus option). Review your photos at a good zoomed-in level to inspect for focus issues!

7) Get one good lens

People often discuss which is more important, the camera or the lens. Well, you can take great shots with a low-end camera and low-end lens and poor shots with high-end equipment. But one thing that's probably true is that kit lenses don't result in as great, sharp pictures as better quality ones, especially in poor light. Those lenses are cheap (and light) for a reason – they don’t have a great amount of quality glass in them (plus they’re not very sturdy or weather-proof – which is not helpful if you’re out and about in the elements!).

So my advice would be to get at least one decent lens. There are a couple of good-value but highly-recommended lenses on the market – namely the Canon 50mm f/1.8 (about £90) or 50mm f/1.4 (if you can push up to about £290). Using a fixed-length (or prime) lens takes a bit of getting used to – you have to move yourself in and out of the shot, rather than zooming in and out with a telephoto lens.

If you’ve got lots of money to spend, there are some incredible lenses available (the Canon L series is their high-end series). The quality of the pictures is usually far superior to the cheaper lenses (you get what you pay for, except perhaps with the 50mm f/1.8 (I don't have one, so I don't know, but all accounts of it are good)). The L lenses are usually much heavier and bigger, so less practical to carry around and to use (I get aches in my fingers after a day with the L lenses, unless I'm using a tripod the whole time).

Bear in mind when you invest in lenses that some are only suitable for the cropped-frame cameras (eg. Canon 600D, 1000D, 60D and 7D), so if you ever upgrade to a full-frame camera (eg. Canon 5D and 1D ranges) then those lenses will no longer work. These lenses in the Canon range are called EF-S. Lenses that you can use on any camera are called EF (all L lenses are EF). There’s a good second-hand market for decent lenses, but less so for cheaper ones.

A piece of advice from my own experience - if you’re going on safari, don’t automatically rush out and buy the first zoom you see that goes up to 300mm. I had a lens like that and the quality was very poor (unless in extremely bright conditions, which animals don’t usually hang out in!). It was a cheap 90-300mm f/4.5-5.6 which I bought years back when I was going on safari). I now use a 70-200mm f/4 IS USM (I haven’t moved up to the f/2.8 version yet as it’s over £1,800!) and the quality of the photos is far superior to the 90-300mm one. Better to have less zoom but better quality – you can always crop the photo when you’re home if it's decent quality and sharp.

8) Use filters to change light and allow creativity

I have always used UV and polarising filters, although more recently I’ve read that UV filters don’t really do a great deal on DSLRs – they do protect your lens, though. Circular polarisers are a must if you take landscape photos – they allow you to capture bluer skies and better reflections, as well as bringing out the colours in foliage and rainbows, for example.

My photography really changed, however, when I bought my first neutral density (ND) filter. There are two types of filter system available. The one I use (which is not necessarily the best) is the screw-in filter type. The other type involves having an adaptor on the outside of your lens and then you slot in square filters in front of the lens. With both systems it’s possible to stack multiple filters, although with wider-angle lenses you run the risk of vignetting (dark corners around the edge of the shot). If you run into problems getting either the filters stuck together or a filter stuck on a lens, try rubber gloves to get them off!

My first ND filter was a graduated one and I recommend that everyone who is interested in landscape photography gets one. Simply, it darkens the top half of the screen by a couple of stops, so I can expose the whole shot a bit lighter without having a white sky. If the sky is white and dull it brings a bit of contrast to it. If the clouds are dark and moody it makes them look darker and moodier. If the sky is bright blue, then I won’t generally use it. The one I have is on a ring that you can move around to adjust the line of the dark bit – so you can move it when you’re taking portrait shots or if the horizon is a bit wonky! Don't forget to line it up again when you return to taking landscape format shots, otherwise one side of your photo will be darker than the other - not a good look. The benefit of the slot-in system is that you can place the dark portion anywhere in the shot, rather than having it bang in the middle as is the case with the screw-in ones. This is helpful if you don't have the horizon in the middle of the shot (most of the time!), but even with the screw-in ones it seems to work okay (I don't usually get a noticeable line across the middle!).

The other ND filters I have are not for everyday use, but I absolutely love them! Ever tried to take a photo of a waterfall, hoping to get the water look smooth – like in the professional pictures?! Well, if you try it without a filter (unless you’re in a really dark place), the whole shot will be over-exposed, as you have to slow the shutter speed down, which will let too much light in. Screw in an ND filter on the lens and suddenly you can leave that shutter open a little longer (depending on the type of filter) and voila! – you have a perfectly exposed shot with lovely smooth water. Well, it takes a lot of practise. Focusing can be tricky (use Liveview if you have it, or focus prior to putting on the filter). I am now up to three of these things – one which blocks 10 stops of light (serious “black glass”), one which blocks 6 stops and one which blocks only 2. The reason for this is that light conditions will always be different and sometimes you want a ½ second exposure and sometimes you want 30 seconds. Obviously, the darker the glass the longer youu can leave the shutter open, so the 10-stop one isn't for short long exposures, it's for long ones! Sometimes you want more or less time for your exposure, so you stack a couple until you get the right combination. In order to get the appropriate aperture you might not find that just one will do the trick.

These things are not cheap, but for the extra fun and wonder that you’ll get from the results, I would definitely invest! (Beware: they can become very addicitve and they can also be quite antisocial if you’re out taking photos with someone else – “just one more long exposure shot, honey” and you’ll be there another half and hour and your companion will be cold, bored and grumpy! In fact, I got mild hypothermia the first time I used them in Scotland - remember to keep warm!). For inspiration, read this article; the best and most comprehensive article I've found about filters: how to use them, all the brands and types available, etc.. Thanks Peter Hill!

If you’re taking long exposure shots, then the camera has to be steady, so you’ll need either to prop it on a wall or the ground (a piece of clothing will help to get the right angle), but basically you’ll need a tripod. If you're shooting for longer than 30 seconds you'll also need to use the Bulb setting with a remote shutter release.

Oh, and if it's getting dark, or it is dark already, then you probably don't need the filters for a long exposure shot (at least not the 10-stop one), as the light will become more limited. Night-time is a perfect time to play around with long exposure shots including light trails (and star trails, although living in the middle of London doesn't lend itself to this).

9) Use a tripod! 

Except for quick shutter speeds, a tripod is usually very helpful. The general rule is that you should never have a shutter speed less than 1/focal length - eg. if your focal length is 50mm, then make sure your photo is at a speed of 1/60th second or faster (here's a good article on this). Otherwise use of a tripod is necessary to prevent camera shake. Many different types exist and some can be so flimsy as to be useless in a light breeze. I have a variety – a lightweight one which is good unless there’s wind, a heavy-weight one (very heavy and bulky, so not ideal for travelling!) and a Gorillapod (this is a small device that can be used as a very low tripod or its legs can be wrapped around something like a fence post). If you’re into hiking (like me!) and don’t want to lug a bulky tripod, but still want to have something with you to help you capture sharper shots (or long exposures – you never know where you’ll come across a picturesque waterfall) then these are really handy. My Gorillapod is pretty heavy-duty – but you need it to be sturdy enough to hold your camera and lens (and the weight they say they hold on their website is BS – halve the weight they suggest and you’re closer to what it’ll comfortably hold). Oh, always shop around for these things - two good sites are Amazon (for everything!) and Camera Price Buster for comparison of camera and lens prices.

As well as having a sturdy platform, another method of getting sharper shots is the use of a remote-control shutter release, or just using a self-timer delay of 2 seconds, which gives the camera enough time to settle down after you’ve pressed the shutter down before it captures the shot. Others suggest using the mirror lock-up function too, but I haven’t yet tried it.

At the other end of the spectrum from steady photography using a tripod is panning. I wrote a blog about this earlier this year.

10) Make sure your sensor is clean

I recently returned from a trip to Iceland and had to spend an awful lot of time touching up photos to get rid of dust-spots. These come from tiny specks of dust on your sensor (or possibly lenses and filters too). Cleaning lenses and filters is pretty straight-forward (use a photo-specific, lint-free cloth or tissue), but trying to clean the sensor is another story. A lot of cameras have an automatic sensor-cleaning function when the camera is swtiched on and off, but this doesn't really seem to work. I change lenses a lot, and sometimes dust just gets in.

The first method for cleaning is to use a rocket blower - this can be used to blast air onto the sensor in the hope of dislodging dust specks (with the camera facing downwards so the dust can get out!). If you've ever used one of these to clean the dust from lenses or filters you can see that it's not always that efficient, as you watch that dust dance across the filter from one spot to another. Sometimes the blower cannot dislodge the dust from a lens, and this is particularly the case if you try to clean your sensor with one. Some people suggest that you might even blow more dust in using this method.

The next option is to take it to a photo store to be cleaned. This is not ideal, as it involves finding a place that does it, taking it in to them, trusting them, being without the camera for a while, paying them, and collecting it. It should be the safest way of doing it, though, as you'd hope that if you're paying for it the people have been trained to do it properly and efficiently without damaging your sensor.

The other methods involve trying to clean it yourself with one of the products available on the market. I'm not going to go into all of them here, but from what I have read, the only one that really works is to use specially-made wands or swabs covered in lint-free cloth (PEC-Pads) dabbed with a special solution (Eclipse) and then brush it across the sensor while the camera is in cleaning mode. I'm not going to go into detail, as it's covered in lots of detail by this article. Having read this a few times I ordered the bits and pieces on Amazon and set to cleaning the sensor myself. It worked pretty well, and I used two swabs before settling for a couple of dust specks at the side (compared with about 20 usually visible in all my shots before processing). The equipment is not cheap for what it is, but great value for what it does! Bear in mind that the fluid (Eclipse) shouldn't be taken on aeroplanes as it's flammable, but I'm sure a tiny bottle in your hand luggage is unlikely to cause too much problem - perhaps clean your sensor before you leave home! There used to be two versions of it, with a different one (E2) for different, tin oxide-based sensors, but now there is only one, so don't let that throw you if you see a mention of two varieties. One fluid works on all.Oh, and there are two sizes of the swabs - for APS-C sensors and full-frame.

11) Post-process 

Photoshopping photos has a bad name – mainly due to dreadful overdone HDR (high dynamic range) shots, where the foreground colours look so unrealistic that it looks like an ‘80s Athena poster and the skies are so burned they just look freaky (just Google "overdone HDR" and you'll see a selection of the finest (worst) examples). I am a firm believer, however, that a little bit of post-processing can go a long way. Firstly, you may need to tweak a few things in RAW, like adjusting the exposure, the levels and curves, straightening the horizon, changing the white balance, etc. but there are also some other things that you might need to do, for which you’ll need a bit more advanced software. I use Serif PhotoPlus x4, which is a cheaper version of Photoshop. It's not great for working with RAW photos, so I always play around with these first in the Canon software and only occasionally make changes using PhotoPlus.

Some photos need sharpening up, but you don’t want to over-do it. The best way is to use the Unsharp mask. Again, you need to play around with the settings to see what works best. Try amount = 50%, radius = 0.1 pixels, threshold = 0 to start with and see how that looks - it'll be quite sharp if the threshold is low; you might want to try something different for portraits where you want a softer look.

As discussed in section 1, you may need to play around with the histogram - adjusting levels and curves - basically correcting exposure errors.

Some photos look pretty ordinary in colour, so try desaturating, or turning into black and white (or maybe sepia, or another colour-tint). In more advanced software you can play around with the colour channels - this affects the appearance of the monochrome conversion considerably – eg. a red filter gives darker skies and paler faces. PhotoPlus is good for this, giving you lots of control over the black and white conversion. Often shots with dull skies can be rescued by making them moody black and white shots.

Once you’ve mastered the basics of correcting levels and contrast, adjusting saturation (don’t over saturate!!), then move on to some more interesting and complex adjustments, if you have the software – eg. dodging and burning (lightening and darkening) of specific parts of a photo (again, overdoing the burning can ruin photos by making them look unrealistic and "photoshopped").

Cloning is very useful for getting rid of those dust spots (that you haven't cleared with cleaning!) and other annoying bits and pieces that may ruin an otherwise great shot. When I take long exposures I get a few “defective pixels” – these show up as either tiny white spots (dead pixels) or brightly coloured ones (hot pixels). These are quite common and definitely need to be cloned out. With cloning, make sure you pick something to clone that is the identical colour and tone and it shouldn’t be visible once it’s adjusted. Some programmes produce better results than others.

Another common adjustment is to add grain/noise and vignetting around the edges to produce a more vintage-style shot. This is definitely a personal preference thing and I think works best on black and white or sepia shots.

12) Read photography magazines or blogs, use Flickr, enter competitions, etc.

You can learn an awful lot from reviewing your own photos critically, but it’s not always that easy to do. I suggest having a look through some photography magazines (hard copy or online versions); they usually have a readers' section where people send in their work for critique. These critiques are useful to learn where people are going wrong.  There are tons of these magazines (and magbooks) on the market – have a look at what the features are on in a particular issue and choose something that you want to improve on. There may be photography clubs near you - I guess a Google search will help to find them.

These magazines have competitions too, as do various newspapers and organisations (eg. Travel Photographer of the Year). It can be a good way to see what's doing well, as well as giving you the chance to win equipment, prints or holidays. A word of warning with some photography competitions, though, is that they sometimes take ridiculous rights over your photos even if you just enter. Read the Terms & Conditions carefully, to ensure that they can't sell your photos on. You will always retain the copyright, but some list all sorts of things that they can do with the photos without you getting a penny (or even any recognition). The better competitions will only ever use your photo in connection with the promotion of the competition, and usually only if you're a winner or runner-up. Some also have stipulations about not entering if the entry's been "published" before - how they define that, who knows, but I had a photo removed from one (it was a runner-up) because it won a different competition (I'd entered them both at the same time).

Another good place to learn from others is via blogs (if you want advice on anything in photography then Google it – there will be a whole host of articles, blogs, and sometimes videos to help you out). I also spend a lot of time not only adding my own images to Flickr but also looking at other people's photos. You can add photos to particular groups depending on the location or subject matter. People’s comments are never particularly useful from a critical point of view, but it’s nice when people give you good feedback. I do find it really helpful, though, looking at the EXIF info of photos that I like; you can see what camera the shot was taken on, what lens they used, focal length, ISO, shutter speed and aperture. Not everyone allows this information to be public, but most do. Become inspired by people and try to copy their techniques (eg. getting that nice smooth water), but please don’t steal people’s work from Flickr (bane of my life!).

13) Practise! 

Always have a camera with you. You’ll never improve if you don’t take photos. You'll never get decent photos on your DSLR if you don’t have it with you! I started carrying a compact with me (Canon S90) about two years ago, and now I never go anywhere without one of the cameras. I carry my DSLR and lenses with me more and more, even if I’m just popping out to meet people – you never know what you might see. Taking a camera with you and having the option to snap at all times is a great way to get your confidence up and get used to taking photos in public. Try to fit photography into your daily routine - some of the best shots I’ve taken in London were taken when I was walking along the River Thames on the way to an old job. Beautiful time of day (around 7-8am) and changing seasons and light, coupled with the movements of the river. Sometimes I was rather later for work...


That's all folks...

So, my most important piece of advice of the lot is this: practise. The only way to really improve at photography, like with everything else, is by practising. Snap, snap and snap some more! Take photos all the time. Come home, download them, have a look at them, adjust them. Be critical with yourself. Blow them up to at least the size of the screen. If they’re not sharp (at least in one place) try to work out why – are you having problems focusing on the right spot? Did you move the camera (or was the shutter speed too slow)? Did you not get the effect you were looking for? Did you over-expose? Why? What do you like about the good ones? Eventually the technical side of it will become more intuitive and almost second-nature. The creative possibilities are endless, though, and you'll find there's new stuff to learn about photography forever! Beware, though, as it can become very addictive...



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