This thesis is an attempt to substantiate the legitimacy of the photograph as a source and aid to painters. Chapter 1. reviews various artists and major art movements of the Nineteenth and Twentieth centuries influenced by the photograph. Since the invention of photography in 1839, artists such as Manet, Delacroix, Corot, Degas, Picasso, and Dali have used photographs as a source of inspiration and help in achieving the qualities they desired in their paintings. Most major art movements since the middle 1800\u27s were influenced in some way by the various developments of the camera and photography. Photo-Realism, a style of painting that uses the photograph as a direct source of subject matter, is discussed in Chapter 2. The Photo-Realist a...