| 摘要 |
In a camera having a photoelectric-timing circuit for determining shutter speed in accordance with the level of scene illumination, including an opening blade actuatable to initiate an exposure interval and a closing blade retained by an armature movable by an electromagnet controlled by the timing circuit to release the closing blade. A spring biased lock is provided for locking the armature and the closing blade during opening of the opening blade. The spring bias is released prior to attraction of the armature by the electromagnet to close the closing blade.
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