Zoom camera having electronic exposure control

Details Zoom camera having electronic exposure control Zoom camera having electronic exposure control

1994-03-10

1995-12-05

Gellner, Michael L.

35419512, G03B 7097

Patent

active

054734045

ABSTRACT:
A photographic camera for taking photographs of a scene having a film speed determining system, an electronically controllable picture taking lens that can be positioned to a plurality of lens focal lengths, a lens selection system for operation by the camera user to select one of the lens focal lengths at which the user wants the picture taking lens to be positioned, and a light sensing system that detects the amount of ambient light illuminating the scene, includes a controller responsive to film speed, available ambient light, and light gathering capacity of the picture taking lens at a selected lens focal length, for determining if the photograph will be underexposed at the selected lens focal length and inhibiting the taking for underexposed photographs.

REFERENCES:
patent: 5335041 (1994-08-01), Fox
patent: 5357308 (1994-10-01), Goo

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