For me anyway when a photograph is interesting, it's interesting because of the kind of photographic problem it states - which has to do with the contest between content and form.
Garry WinograndThere is a transformation, you see, when you just put four edges around it. That changes it. A new world is created.
Garry WinograndA photograph is the illusion of a literal description of how the camera 'saw' a piece of time and space.
Garry Winogrand