1993-10-28
1995-05-23
Perkey, W. B.
354432, 354415, G03B 1336, G03B 1503, G03B 708
Patent
active
054185963
ABSTRACT:
An apparatus for performing photometry on a photographic subject image divided into plural regions, which eliminates the negative effects on photometry caused by an illumination source which provides auxiliary lighting. The illumination source for providing auxiliary lighting illuminates a portion of the photographic subject. When it is detected that photometry is being performed, illumination by the illumination source may be inhibited such that the brightness of the subject does not suddenly change, thereby adversely effecting photometry. Conversely, when the commencement of the action of the illumination source is detected, photometry may be inhibited such that the change in brightness due to the illumination source has no effect on the photometry. When a portion of the photographic subject has been illuminated by the illumination source during photometry this situation is detected, and the photometric result is corrected to compensate for the effect of the illumination source on photometry.
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patent: 5268730 (1993-12-01), Takagi
Nikon Corporation
Perkey W. B.
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