Movie camera having adjustable shutter

摘要

A shutter system for a movie camera (10) or the like for controlling the film exposure including a main shutter wheel (110) rotatably mounted on main drive shaft (140) driven by a first motor (144) and at least one adjustable shutter wheel (120) positioned adjacent to and coaxially rotating with the main shutter wheel, the adjustable shutter wheel being mounted on a secondary shaft (160) independently driven by a second motor (164). Both the aperture (determined by the relative positions of the shutter wheels of the main shutter wheel and adjustable shutter wheel) and the shutter speed are set by a controller (170) which regulates the speed of each of the motors. <IMAGE>