发明名称 |
Exposure control apparatus with compensation for film reciprocity failure |
摘要 |
A camera includes a photographic film having a given film speed which decreases when the film is exposed to light which varies from a given illumination level. A camera shutter is controlled by a timing circuit adapted to produce an exposure which is adjusted to compensate for the decreased film speed.
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申请公布号 |
US4264163(A) |
申请公布日期 |
1981.04.28 |
申请号 |
US19790007528 |
申请日期 |
1979.01.29 |
申请人 |
EASTMAN KODAK COMPANY |
发明人 |
HICKOK, WILLIAM K.;WHEELER, ROBERT C. |
分类号 |
G03B7/083;(IPC1-7):G03B7/08 |
主分类号 |
G03B7/083 |
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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