发明名称 |
Zooming control device for a camera |
摘要 |
A camera is so structured that trimming photographing in which the F-number of the photographing optical system does not change is preferentially selected for the zoom-up photographing of a dark object field, so that the shutter time does not extend unnecessarily and the risk of hand-vibrated photographing is reduced.
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申请公布号 |
US5233383(A) |
申请公布日期 |
1993.08.03 |
申请号 |
US19920850163 |
申请日期 |
1992.03.13 |
申请人 |
NIKON CORPORATION |
发明人 |
KAZAMI, KAZUYUKI;GOTO, TETSURO;SAKAMOTO, HIROSHI |
分类号 |
G02B7/10 |
主分类号 |
G02B7/10 |
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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