My earlier writings dealt with some of the technical aspects of photography. Recent writing attempts to integrate information from other disciplines and relate it directly to the understanding of photographs in particular and to pictures in general. Each discipline has its own vocabulary in dealing with philosophical issues such as truth, reality, and values . . . my interest is to build conceptual linkages among various disciplines by utilizing pictures . . . What is the visual equivalent of linguistic terms such as metaphor, metonymy, and synecdoche? — Richard Zakia

Richard Zakia, 1925-2012, was a professor at RIT and a research engineer at Kodak. some of his writing is at this link.