Offered here is a brief history of photography and descriptions of early techniques pioneered in the nineteenth century. Also explained is the revolution in photography early in this century with the inventions of roll film from Kodak and the first sophisticated 35 mm. cameras from Leica. Here too are descriptions of photography as an art form, as a component of journalism, and in advertising and fashion. Techniques, processes, darkroom chemistry, photo composition, and different camera types are described in detail.