Camera having auto focusing and auto exposure functions

Details Camera having auto focusing and auto exposure functions Camera having auto focusing and auto exposure functions

1995-07-24

1997-04-22

Perkey, W. B.

Photography

Exposure control system responsive to distance

Electric distance signal

396104, G03B 700, G03B 1336

Patent

active

056237065

ABSTRACT:
A camera having a focusing lens measures one of a distance to an object to be photographed and a defocus amount of an image of the object. The camera drives the focusing lens in accordance with the measured distance or defocus amount. The camera determines an exposure value of the object to be photographed, and judges whether the measured distance or defocus amount satisfies a predetermined condition. If the predetermined condition is not satisfied, then the determined exposure value is increased. The camera then determines an aperture value and a time value for photographing the object based on the increased exposure value and a predetermined algorithm, and takes a photograph of the object.

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