| 摘要 |
A high speed exposure time control means for focal plane shutters wherein, in order that an always accurate high speed exposure time may be obtained, a rear blade actuating member is so made as to be released after the lapse of a fixed time from the time of the shutter release and the time interval from the time of the shutter release to the time when a front blade actuating member is released is so made as to be varied by setting the exposure time.
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