Every image we see has its perfect composition and the closer we get to that, the better the photograph. It’s the difference between a bad photograph and a good one; a good photograph and a great one. It's the fundamental being of both landscape and street photography, the one thing you must learn, the one thing your camera can’t do for you. My advice to any aspiring photographer is concentrate on composition and let your camera do the rest. Most cameras have an automatic program mode - find it, use it and trust it. Don’t look at your camera, look through it, because while you are looking at it, moving dials and changing buttons, the clouds have moved, the light on the sea has disappeared, the couple kissing are now talking, the photograph is less than it could have been, the image has lost its perfect composition.