Cinematography
Movie cameras use a lens to focus reflected light from objects. This light makes an image that is used by an image sensor or a light-sensitive material inside a movie camera. These images are created one after another and saved for later processing and viewing as a motion picture. Images captured with photographic emulsion create a series of invisible images on the film stock. Chemicals are used to "developed" this into visible images. The images on the film stock are projected for viewing the motion picture.