Device and method for sensing brightness

Details Device and method for sensing brightness Device and method for sensing brightness

1996-09-27

1998-05-05

Adams, Russell E.

Photography

Exposure control system responsive to focal length

396234, G03B 700

Patent

active

057489963

ABSTRACT:
A device and a method for sensing brightness, by which a sensing area for measuring the brightness of an object is varied. The variation of the brightness sensing unit is in response to the variation of an image angle that varies according to the zoom position of the lens of a zoom camera. In this manner, photographs with optimum exposure can be obtained. The device comprises a zoom position sensing unit, a brightness sensing unit, and a control unit.

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patent: 5184172 (1993-02-01), Miyazaki

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