When you're getting started the challenge is overcoming the fear of taking pictures of strangers. Since telephoto lenses are not normally used in street photography, how can you stand a few feet from your subject, put the camera to your eye, focus, and click the shutter without getting nervous? A good street photographer is not only fearful in the beginning (this is a good sign of being sensitive) but they also don't want to do anything which will change the how the subject is behaving.
With practice, you can overcome your reluctance to photograph strangers as well as learn techniques which will help you get better candid shots. One word of caution - it can be addictive. After a while the street photographer will choose which seat has the best view in a restaurant, or which side of the street offers the best possibilities.
THE PSYCHOLOGICAL AND MORAL ISSUES
The first thing to accept is that you are invading the privacy of your intended subject. You may have the best intentions in the world, but once you decide to point your camera at someone without their permission, you will be invading their personal space. This is what it means to take a candid street shot. Before going into the physical techniques which can make your job easier, it is important to look at your own motives. Most of the time, you see something that you simply want to share with the rest of the world. It might be funny, odd, mysterious, have an interesting design, or any other quality that you think is worth shooting. But you are nervous about taking the photograph. This is normal. When you are just starting out, ask yourself whether you would take the picture if you weren't afraid of your imagined consequences. This may seem drastic, but pretend that this is your last day on earth, and that nothing else matters but getting this shot. Take a deep breath and after learning the various techniques listed below - you should be ready to get at it.
A good street camera has the following characteristics: a quiet shutter, interchangeable lenses, fast lenses (F-Stop of F2.0 or lower), no shutter lag, RAW capture mode, the ability to focus well in dark places, usable high ASA, a good viewfinder and lightweight enough to take with you wherever you go. I don't know of any digital Point and Shoot camera that meets all these criteria. A digital Single Lens Reflex (DSLR) will meet all or most of these properties. The Canon 40D, for example is no heavier than a Leica M, but the fast lenses are larger. The high end Point and Shoot, known as a digicam, has some of these features, but they don't have interchangeable lenses, and the zoom lenses are not usually faster than F2.8 at the wide end.
The current crop of DSLRs have many features of a good street camera.
So, let's get to it. Whatever digital camera you use, turn off any beeping the camera makes. Also turn off the immediate playback on the LCD. Do some tests to find out that highest ASA you can use without getting too much digital noise. Again, this is where DSLRs are best. Cameras like the Canon Mark II can allow you to use an ASA as high as 3200 (maybe more) without creating much digital noise in the image. Most point and shoot digital cameras creating noiseless images at much about 200 ASA.
Most DSLRs depend on a tic-tac-toe matrix of focal points. Keep the center point on, and turn the other focal points off.
For a digital camera with a cropped sensor, a 30mm F1.4 is a good walking around lens. Sigma makes an excellent one though remember, the Sigma f1.4 30mm won't work with a full-frame sensor). If you are using a full-sized sensor, then a 35mm f1.4 lens, in combination with a 50mm f1.4 is an excellent combination. Having a lens that gives you a good quality shot at F1.4 is very important. And just because a lens opens to F1.4 doesn't mean that it's good at that F-Stop, so pick this lens carefully. In the Canon line, the 50mm F1.4 which is for a full sensor, and which works with a cropped-sensor as well, is one of their best lenses and compared to their other F1.4 lenses is cheap.
A DSLR usually has a method for decoupling the exposure from the focal point. It's a good idea to do this. The Canon 40D and in fact almost all Canon SLRs (going back to the film days) have this feature. You set the focus lock to a button on the back of the camera, and a half-press of the shutter locks exposure. I dwell on this idea because many times you are going to use the button on the back to pre-focus your shot, and do framing as the camera comes to your eye. The idea that you want the camera to take it's exposure off the focal point doesn't make much sense. In general, if you are relying on the meter, than it's better to lock focus, and have the meter do a general reading of what's in the frame.
Whether it's a sunny day, or an overcast day - ASA 800 is a good place to start. You almost always want all the shutter speed you can get. If your camera produces very noisy images at ASA 800 than it is not the right camera to use.
Never use a lens cap. Not at any time, for any reason. You should always have a UV filter on the lens, which will protect the lens and make it easy to take a quick shot. You can always tell an amateur if they are using a lens cap.
DRESS THE PART
You'll be headed out to a tourist spot, so dress like a tourist. I'm not kidding. Although you may have lived in your city for 50 years, get yourself a tourist map and dress like you have just arrived from the mid-west on vacation. I'll leave that part for you to figure out.
Visit a crowded tourist attraction where everyone has a camera. Dress and act as just another tourist. Study your tourist map. Gawk at the landmark like everyone else. And keep an eye out for interesting subjects.
DO NOT REMOVE YOUR EYE FROM THE CAMERA AFTER YOUR SHOT
Start off like everyone else. Take pictures of the landmark. Keeping the camera to your eye you can now scan through the crowd for something interesting. As you take pictures, do not remove the camera from your eye even after you have the shot you wanted. Continue to move the camera around pretending to take pictures. Never give away the fact that you've taken someone's picture by removing the camera from your eye after taking the shot.
You may not find anyone worth shooting, but this is an easy way to get started. It shouldn't be very scary, and you will find that even while standing very close to your subjects you can take their pictures without arousing suspicion. You can employ the same techniques at street fairs, or parades. Just about any crowded area which is filled with tourists is a good place to practice.
KEEP BOTH EYES OPEN, TURN OFF THE LCD
Keep your non-shooting eye open. You should be able to look at possible subjects even with the camera to your eye. Most DSLR cameras have an LCD screen for viewing images on the back. This should always be turned off.
You just don't want the LCD coming on while the camera is to your eye. It's annoying and it gives away the fact that you've taken a shot, especially in a dark location. Also, if the LCD is off, and you hold the camera a bit in front of your face, you can see the reflection of what's going on behind you.
Knowing what is happening behind you is useful in a street where people are moving around because you can estimate the distance the potential subject will be when you turn around, and have your camera pre-focused for that shot. Of course you'll need to gauge how fast they're walking towards you, and about where you'll turn around and snap. But again - as you turn keep the camera to your eye as if you are just looking around. You will be surprised at how easy it is to take a picture of the subjects when they are five feet or so from you without them knowing.
SHOOTING FROM THE HIP VS. HAVING THE CAMERA TO YOUR EYE
As a general rule of street photography, if you can get the shot with the camera to your eye, you will get a better shot. I know that there is an entire school of shoot-from-the-hip photography, which you can practice as well, but you will never be able to frame this sort of shot as well as if you put the camera to your eye. (That's my own opinion and of course open to debate.) There will be times when it is simply impossible to shoot with the camera to your eye, and so shooting from the hip is worth learning. But I don't think it's a good way to get started.
You need to make decisions about depth-of-field. A common technique for the street photographer is relying on hyper-focal distance. I don't think this is as necessary with modern auto-focus cameras, but the idea is that with a wide lens, in the 30 - 35mm range, you can set the lens to f8, if you have enough light, and set the focus at ten feet, and know that everything from approximately 6 feet to 15 feet will be in hyperfocal distance.(I'm not looking at a lens as I write this so the exact distance and f-stop may be off, plus most modern autofocus lenses don't include a hyperfocal scale. But for older cameras with a hyperfocal scale on the lens, this is a tried and true technique.) I just haven't found it to be necessary with modern auto-focus cameras.
For example, with the Canon and Nikon DSLRs you can assign focus lock to a button on the back of the camera and exposure to the shutter button. You anticipate that you are going to shoot a certain subject, and hold the back button down to focus on them, but maybe you aren't ready to take their picture yet and they aren't moving much. You can continue to hold that back button down until you are ready to take the shot, or you can turn the lens to manual focus while holding the button down. Then you can release the button and know that the focus remains the same. Don't forget to turn autofocus on the lens back on when you're finished or all your subsequent shots will be out of focus.
Modern cameras have a matrix of focal points. They are a big selling point. But they are not very useful for street photography. I would recommend turning them all off except for the center focal point, which you'll use to pre-focus with. I don't like the idea of having the camera decide what to focus on.
Suppose you're walking down a New York street and you see a bunch of subjects leaning against the building to your right. You know that you are going to turn and face them at take your picture and then walk on. So the distance between you and any building directly to your right is the same. You focus on a building to your right before you arrive at your subjects and lock that focus. Now as you approach your subjects, you turn to your right and take your shot without the need to focus.
HAVING A FRIEND ALONG
This technique goes back a long way in the history of street photography. Walker Evans would bring a woman friend along with him, and stand on a crowded street pretending to take pictures of her. She was a decoy, and he would move the camera so that she wasn't in frame and take pictures of the people that behind her.
Sneaky camera gadgets have been around for a 100 years. The right-angle attachment on the viewfinder was often used by famous street photographers. It can swivel at various right-angles so that you are looking in a different direction than where the lens is pointed.
A similar device that fits on the end of the lens has a mirror inside. The front of the lens is points straight ahead, but the mirror is pointing to your left or right.
Both gadgets are still made, but they take some getting used to. I haven't found them necessary, although I've experimented with both devices.
The subway car is another popular locale for street photographers.
When Walker Evans did his series of subway "portraits," he used a Rollei Twin Lens camera. You look down at the ground glass to focus and compose. Evans used a cable release which he ran up the arm of his coat. He put the camera on his lap, sat directly across from his subject, and kept his right hand in his pocket to operate the cable release.
He knew ahead of time, what the distance was too his subject. If you are shooting on the same subway line, the trains are always the same dimensions. If you don't have a camera with auto-focus, you know the distance between different points.
Evans had one problem with his setup. After taking his shot, it was very obvious that he was advancing the film to the next frame. He would usually get up and settle down in another car with a new frame loaded.
Although the subway is a difficult place to shoot, it has one advantage: it's noisy. There's always enough noise to drown out the click of the shutter. I have taken thousands of pictures on the subway with the camera to my eye without running into any sort of trouble other than the occasional nasty stare. However, before the camera is raised to your eye it should already be focused. This rule is true for most street shots.
You can focus on your subject when they aren't looking, set the camera lens to manual and wait for "the moment" if it ever happens.
Whether on a train, or some other location, the easiest time to shoot is when there is a distraction. For example, when the mariachi band enters the car, everyone will be looking at them. You can shoot other passengers without being noticed.
And even if you are seen, people will understand that you have your camera out if you take a few shots of the mariachi Band as well. This is the same technique as using a landmark as a reason for taking pictures.
Another modern phenomena which makes life easier for the street photographer: everyone, whether on the street or in a subway car, is already distracted by their iPods, cell phones, e-books, and Blackberry devices. One day I was on the train, and noticed that everyone around me had earphones, or were reading their email. Combined with the noise of the train, I was able to take closeup shots of a passenger who was about a foot and a half away from me without being noticed by anyone. I found that amazing. It wasn't like that ten years ago.
As a rule for hand-held shooting, your shutter speed should equal the focal length of your lens. If you shoot with a 30mm lens, your shutter speed should be at least 1/30th of a second. If your shoot with a 90mm lens, your shutter speed should be at least 1/90th of a second to prevent blur due to camera shake.
Some photographers can hand-hold a camera at 1/15th of a second with a 30mm lens and some will have trouble holding the camera steady enough even at 1/30th of a second with a 30mm lens. So this is just a guide. Camera shake is also a property of the camera. An SLR camera, with the slap of the returning mirror, vibrates more than a Point and Shoot camera which doesn't have a mirror. Many Digital SLRs now feature "Live Mode" where the mirror slap is no longer a factor. So you will need to experiment to find out the lens / shutter speed combination which will prevent camera shake with your setup.
But remember this, camera shake is not the same thing as motion blur. Even if your camera is set on a tripod, with a mirror lock-up, and a cable release, if the motion of the subject is too fast for your shutter speed, you will have a perfectly blur free background (no camera shake) with a blurred subject.
I call this technique The Stutter Step. The object of the stutter step is to be able to freeze your walk, in mid-step if needed, at the same instant you click the shutter, and then continue on as if nothing has happened. If you do it slowly, someone walking briskly behind you may just about bump into you because you have stopped dead in your tracks for an instant while you put the camera to your eye and took a picture of someone walking towards you. For this sort of shooting, where your subject(s) more directly towards you, it is best to have as fast a shutter speed as you can manage.
Digital SLR cameras usually have the following settings: P (program mode), AV (aperture mode), TV (shutter speed mode) and M (manual mode). They also have a a bunch of icons representing other situations such as Action Mode, or Portrait Mode, or Night Mode. Don't use these. Again, you don't want the camera to make decisions for you.
But it is handy, to set your AV and TV modes so that with the twist of the dial, you are set for aperture or shutter speed priority. In the case where it is a sunny day and you are walking, and expect to be taking pictures of other people who are walking, you can work in TV mode, with your shutter set to 1/1000th of a second. This assumes that you are using a relatively fast lens, and that you can shoot at an ASA of at least 800.
But to return to the stutter step. Your camera is hanging around your neck. You are wearing tourist clothes. You see an interesting situation developing ahead of you. Your camera is set to shutter priority of 1/1000th (more if you can manage it), and you must image what distance you will be when you take the shot. Aim your camera at the sidewalk and focus at the distance that you imagine you'll take your shot and lock that focus in.
Now, just when the situation is right, you halt, sometimes in mid-stride, the camera moves to your eye. You already know whether this is going to be a vertical shot or not, and what the frame will be, and while you are stock still, you take your shot and just as if nothing happened, you continue on your way. Your subjects have passed you. Even if they noticed you, it is unlikely they will turn back to find out why you may have just taken their picture. Maybe you did, and maybe you didn't.
THE BENEFIT OF HIGH ASA
One benefit of modern cameras is the ability to shoot at a high ASA. You may be able to set your walking around shutter speed at 1/4000th of a second, with an ASA of 1600. Some of the newer cameras have usable ASA ratings of 32,000 and higher without causing noise in the RAW image. This opens up a new world to street photographers. With a high ASA you can shoot with a high F-Stop and a fast shutter speed in low light situations like the subway. For example you could use an F11 f-stop with a 1/1000th of a second shutter speed, and still have enough light for a proper exposure on the subway. That is a new development in street shooting.
Previously, street photographers would push their film or use fast film for shooting. They might use an ASA of 1600 or more, but the resulting negatives would be grainy. As I write this, the Canon Mark II can easily shoot at 1600 ASA with results similar or better than 400 ASA black and white film.
DON'T THROW ANYTHING AWAY
No matter how you try, and no matter how good your street technique is, most of your shots will be ordinary. You might come back after a day of shooting with nothing to show for it. You may feel non-productive.
Street photography is like fishing. If you enjoy fishing, the catch is important, but the entire experience of getting up early, and making many fruitless casts from your boat isn't non-productive. You may enjoy the experience whether you return with fish or not. You simply can't cast your rod and expect to catch a fish every time.
Your best street catches make up for all the uninteresting shots. Unlike fishing, you can't always tell immediately if you've caught a great shot. Many street photographers will let their captures sit for a while before looking at them. What this means is: don't throw anything away. Make backups of your images, and even if you think they're not very good - don't toss them. Given the inability to describe what makes a good street shot, you shouldn't throw any away. Even an out-of-focus shot might have something interesting in it when you have enough distance to judge it. Your may find something in a shot that seems boring when you look at it again a few years later. This has happened to me enough times so that I never delete digital images.
THE OBLIVIOUS PEOPLE
Street Photography is easier then it used to be. People in the city walk around with their senses clogged up. More people are oblivious to what is going on around them then ever before. Music is blasting in their ears, or they're talking on their cellphone. If they're not talking on the phone they may walk the streets while reading their email. This makes it easier to photograph a stranger without them noticing you.
Street Photography is harder than it used to be. Since we live in an age of urban terrorism and web postings, people and the police are more suspicious than ever. This suspicion extends to landmarks and property. The subways and the streets are filled with video cameras watching your every move. While you take your photographs, most likely you too are being photographed. In New York all major infrastructure contains signs banning photography.
In New York, although it is legal to take pictures on the subway, there is the possibility that you'll be questioned by the police who think you may be a terrorist. Maybe they don't know the current laws. You are allowed to photograph on the subway, so long as you don't use a flash or tripod. However, it is always a good idea to have valid ID with you in case you are stopped. I have been stopped many times while photographing on the subway and usually I just explain that I'm a fine art photographer, working in black and white, and show some ID and that's enough. If you are going to use a flash, or a tripod, it is still possible to get a permit to photograph in a specific location in the subway.
Photographers who are starting out want to know if it's a good idea to ask permission from your subject. It would be nice if you could, but it isn't practical. Once you strike up a conversation with your subject, you are no longer doing street photography. From that point on, the person will strike a pose, and you will be doing what I call street portraits. Should you get a model release? Unless you are doing street portraits, it isn't practical. On any given day, you may take 100 images only to find one good one (if you're lucky). It would be impossible to ask each person you photograph to sign a release Many of your shots are of people that rush by you in a fraction of a second.
WHAT TO DO IF YOU ARE CAUGHT
At some point, you will be caught, and your subject will approach you. Maybe they say, "Did you just take my picture."
Honesty is the best policy. The answer is, "yes." You smile, and try and explain what it was that you found so interesting about them. With a digital camera, you can show the image on the back of the camera. The person may then be annoyed, or they may be flattered. If they are upset, and the picture isn't that great, then you could offer to delete it for them - and don't play any tricks. Delete it while they watch. If it's a great shot and you want to keep it, then you'll have to win them over. If you were using a film camera you could just shrug it off and say "no." But everyone knows that you could just show the picture on the back of the digital camera.
Most of the time the person is flattered and wants to know if you would like to take another shot. At this point they almost always strike a pose, and you take the picture knowing that you won't use it. You aren't a war correspondent. Very few images are worth getting into a big hassle over. In all my years of shooting, the worst that's ever happened is that someone asked if I would please delete their photo. I think this happened twice out of ten thousand shots.