| 发明名称 |
METHOD AND APPARATUS FOR SELECTIVE POSITIONING OF SPECTRAL FILTER DURING EXPOSURE CONTROL |
| 摘要 |
<p>Method and apparatus usable for automatically controlling exposure of a photographic film by evaluating selected spectral scene light frequencies during certain ambient light portions of an exposure interval and evaluating additional spectral frequencies during a flash portion of the interval.</p> |
| 申请公布号 |
CA1150557(A) |
申请公布日期 |
1983.07.26 |
| 申请号 |
CA19800367714 |
申请日期 |
1980.12.30 |
| 申请人 |
POLAROID CORPORATION |
发明人 |
JOHNSON, BRUCE K.;WHITESIDE, GEORGE D. |
| 分类号 |
G03B7/28;G03B7/08;G03B7/087;G03B7/16;(IPC1-7):G03B7/08 |
主分类号 |
G03B7/28 |
| 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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