| 摘要 |
A camera shutter mechanism is controlled as to exposure time in accordance with the amount of light from an object to be photographed and with an exposure factor such as film speed. First and second tandem-connected timing circuits are separately controlled in operation respectively to define in succession first and second sub-intervals of the exposure time with the first sub-interval having a duration which is dependent upon the amount of light but is independent of the exposure factor and with the second sub-interval having a duration which is dependent upon both the amount of light and the exposure factor.
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