A photograph can be made with an uncorrected lens, or with no lens at all by making an exposure through a fine needle-hole in a thin metal disc, and the result may be a picture showing the characteristic virtue of photography, the rendering of infinitely delicate gradations of tone. This is where photography stands alone, and this is the distinguishing quality which has given it a place among the fine arts.

p.51 - Pictorial Composition in Photography (1920) - Chapter II