Photography is the process, activity and art of creating still or moving pictures by recording radiation on a sensitive medium, such as a film, or an electronic sensor. Light patterns reflected or emitted from objects activate a sensitive chemical or electronic sensor during a timed exposure, usually through a photographic lens in a device known as a camera that also stores the resulting information chemically or electronically. Photography has many uses for business, science, art and pleasure.Lens and mounting of a large-format camera.
A historic camera: the Contax S of 1949 — the first pentaprism SLR.
Nikon F of 1959 — the first 35mm film system camera.The word "photography" comes from the Greek "light" + (graphis) "stylus", "paintbrush" or "representation by means of lines" or "drawing", together meaning "drawing with light." Traditionally, the products of photography have been called negatives and photographs, commonly shortened to photos.
The discipline of making lighting and camera choices when recording photographic images for the cinema is dealt with under Cinematography
info about: Photographic cameras
Controlling the photographic exposure and rendering
Uses of photography
History of photography
Photographic modes of production
Photography as an art form
Lot of info here : http://photography.about.com