I think the only label here is 'fine art'. Art photography is a much broader concept, but like all art, the best definition might be that which is rooted in ideas beyond the visual. Anything else might be better called 'photography'. It's often the most talented photographers, producing the most beguiling photographs, that are hesitant to label their work art. Maybe for them it's because what they've chosen to explore in their work is 'something else'. Callahan and Cartier Bresson are two photographers I can think of whose work is 'something else', and the only comfortable definition is photography.

