I have a protocol question... posing this to the photojournalists in the group. When shooting an image where the subject is obviously not a model, but someone in the midst of their own life perhaps on the street, or at work, or where ever... how does one approach the person. What do you say? Do you do it before? Asking, "may I photograph you"?... if so, how do you retain the natural feel of whatever the action was they were doing before you asked them? (Saying "act naturally" never works ) Anyway... any thoughts on how to make this work so you don't intrude on someones life, but also don't turn away from a great subject out of fear of bothering them?