Art Photography doesn't just mean pretentious photography, it is the use of photographic techniques to express a visual idea rather than just objectively recording a scene or subject. Obviously it is a direction, not a strict category: all non-automatic photography involves some element of choice by the photographer but in art photography the resulting image has no claim of objctivity or physical "truth" but deliberately represents his or her personal view or experience.
For more, see my first draft website: http://www.JonathanCharlesPhoto.com.
