Fine-art photography is such a broad category as to be almost un-definable. If what sells in high-end galleries is fine art photography, then the standards of execution are meaningless. It doesn't require perfect lenses (or even any lenses at all). It doesn't require perfect production techniques (experimental work is highly regarded these days). It doesn't even require a recognizable subject! Given what constitutes 'fine art photography' these days, your kids' accidental exposures of their feet qualify (if you print them big enough!). Pinhole images, photograms, chemicograms (images formed purely through the action of chemistry on photo paper), black-and-white, color, dignified portraits, snapshots of prostitutes in flagrante , landscapes of the Sierra laden with snow, muddy excavation pits in dystopian suburban developments, it's all fair game.