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.
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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 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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