发明名称 Photometric device
摘要 A photometric device of the kind obtaining information on the luminance of each of photometric areas defined by dividing a photographing field at least into a middle area and a peripheral area and computing a photometric value on the basis of luminance information obtained from the middle and peripheral areas includes: detecting means for detecting whether the luminance information obtained from the peripheral area exceeds a given upper limit luminance level; and correcting means which is arranged to substitute a specific luminance information value for the luminance information obtained from the peripheral area when the latter is detected by the detecting means to be exceeding the upper limit luminance level.
申请公布号 US4870443(A) 申请公布日期 1989.09.26
申请号 US19870134814 申请日期 1987.12.18
申请人 CANON KABUSHIKI KAISHA 发明人 HAYAKAWA, SHINGO;KIYOHARA, SHUICHI
分类号 G01J1/44;G01J1/42;G03B7/081;G03B7/091;G03B7/099;G03B7/28 主分类号 G01J1/44
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