发明名称 Exposure calculation device for camera
摘要 The exposure calculation device for camera comprises a first photometric means which performs photometry on the photographic field divided into a plurality of regions and a second photometric means for which by comparison with the first photometric means the separation number is lower and which excels at low luminance photometric performance, and a calculation means which calculates an exposure value in a comparatively high luminance situation by dominantly using the output of the first photometric means and in a comparatively low illumination situation by dominantly using the output of the second photometric means; and it is possible to obtain an accurate exposure value, even in a special environment such as a high temperature situation or low luminance or the like.
申请公布号 US5434640(A) 申请公布日期 1995.07.18
申请号 US19930104619 申请日期 1993.08.11
申请人 NIKON CORPORATION 发明人 TAKAGI, TADAO;IWASAKI, HIROYUKI
分类号 G03B7/091;G03B7/099;(IPC1-7):G03B7/08 主分类号 G03B7/091
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