No Nikon D800 in your bag? No Leica D-Lux portable in your pocket? Every cell phone has a camera and a number of great photography apps to go along with it. So use it! Once you have trained yourself to see the world around you as a stream of infinite artistic images just waiting for your camera to capture, don’t worry that you left your camera behind. It is always better to capture the image rather than lose an opportunity, and the iPhone is not a bad last resort. Apple has done a fairly remarkable job with the camera in…