Responsible for elements viewed through the lens, the cinematographer works closely with the director to create appropriate shots and organize the visual elements of a scene (props, extras, lighting, etc..).
The person on a shoot who is in charge of how the film looks. The Cinematographer dictates the kind of stock to be shot, the position and intensity of lights, the gels and filters used, and all the other details that determine how the overall appearance of the film.
The person whose job it is to set up both camera and lighting for each shot in a moving image text. The cinematographer has perhaps paramount influence over the look or tone of a shot or scene, and is often held in as high esteem as the director. Cinematography is therefore the art of positioning a camera and lighting a scene.