Shutter and trim apparatus

Details Shutter and trim apparatus Shutter and trim apparatus

G - Physics

03

B

95/77

G03B 9/08 (2006.01) G03B 9/42 (2006.01) G03B 9/64 (2006.01)

Patent

CA 1145995

6029 ABSTRACT A photographic camera apparatus includes an automatic exposure control arrangement having scanning shutter blade elements which are accelerated to a determinate velocity and thereafter released for movement through a range of progress- ively varying sized apertures at the determinate velocity to define a photographic exposure cycle. A uniform trim control is provided to give the photographer a degree of overriding personal control through which he may slightly vary film exposure by simultaneously varying the determinate velocity at which the shutter blade elements traverse the aperture range and the amount of scene light transmitted to a photo- responsive control system which automatically controls film exposure.

341017

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