motion-picture camera  motion-picture camera, also called Movie
CameraA 16-mm Bolex motion-picture camera.Jankeany of various
complex photographic cameras that are designed to record a
succession of images on a reel of film that is repositioned
after each exposure. Commonly, exposures are made at the rate of
24 or 30 frames per second on film that is either 8, 16, 35, or
70 mm in width.  A motion-picture camera essentially consists of
a body, a film-transport system, lenses, shutter, and a viewing-
focusing system. The motor-driven transport system is the chief
element that differentiates motion-picture cameras from still
cameras. Within the camera, the unexposed film is housed in a
totally dark chamber called the forward magazine. One or both
edges of the film are lined with regularly spaced perforations,
or sprocket holes. Sprocket-driven gears grip these
perforations, feeding the film into an enclosed exposure
chamber. A mechanical claw pulls the film into position behind
the shutter, locking the film momen