Image pickup apparatus with precise exposure value, exposure...

Details Image pickup apparatus with precise exposure value, exposure... Image pickup apparatus with precise exposure value, exposure...

2006-04-04

2006-04-04

Perkey, W. B. (Department: 2851)

Photography

Exposure control circuit

Having plural photocells

C348S364000

Reexamination Certificate

active

07024108

ABSTRACT:
The object of this invention is to increase the precision of an exposure value in a scan AE scheme. To achieve this object, an image is picked at a plurality of exposure values. Screen-split brightness values and exposure value differences are obtained for the respective exposure values. Two screen-split brightness values and exposure value differences are selected from the relationship between the exposure value differences. A brightness value is calculated from the selected values to decide an exposure value in actual exposure.

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