The photographer's most important and likewise most difficult task is not learning to manage his camera, or to develop, or to print. It is learning to see photographically — that is, learning to see his subject matter in terms of the capacities of his tools and processes, so that he can instantaneously translate the elements and values in a scene before him into the photograph he wants to make.
Edward Weston on photography (ed. Gibbs Smith Publishers, 1983)