The way someone who's being photographed presents himself to the camera, and the effect of the photographer's response on that presence, is what the making of a portrait is all about.
Richard AvedonA photographic portrait is a picture of someone who knows he's being photographed, and what he does with this knowledge is as much a part of the photograph as what he's wearing or how he looks. He's implicated in what's happening, and he has a certain real power over the result.
Richard Avedon