| 摘要 |
A mechanism for switching from daylight to flash photography and for automatically adjusting the diaphragm aperture to an opening determined by the focusing mechanism. Both the diaphragm aperture and focusing settings are obtained from respective rotating members with a lever riding on a cammed surface of the focusing means and a stop lever mechanism having an angular position determined by the setting of the focusing mechanism. When the brightness of the object is lower than a threshold level, an electromagnet is actuated to cause the stop lever to engage a protrusion on the diaphragm adjustment means thereby stopping the aperture at a setting determined by the focus.
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