Exposure control for motion picture cameras

Details Exposure control for motion picture cameras Exposure control for motion picture cameras

1976-04-22

1978-04-18

Hayes, Monroe H.

Optics: motion pictures

With automatic diaphragm control

354 23D, 354 44, 354 60A, 250229, G03B 708

Patent

active

040848930

ABSTRACT:
A control system is described for automatically setting the exposure of a motion picture camera. The circuits shown include, as basic elements, a photoresponsive device, an amplifier connected thereto, and a stepping motor for actuating the diaphragm of the camera.

REFERENCES:
patent: 3554633 (1971-01-01), Sekine
patent: 3972607 (1976-08-01), Reider

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