Exposure control for cine camera - amplifies measured light signal in branch of Wheatstone bridge for fade=in and fade=out control at various running speeds

摘要

The cine camera exposure control incorporates a selector switch for the running speed. This couples set resistances into the exposure circuit to compensate for the different exposure speeds. The system is also provided with a fade control for adjoining scenes. The fade control operates in conjunction with the set frame frequency to provide corrected exposures. The exposure circuit operates as a simple Whetstone Bridge.