| 摘要 |
Prior to taking a photograph, there is performed charging up or storing action of the second capacitor of the second integral circuit while the first integral circuit having a photoelectric element is being actuated. Since arrangement is provided so that "mirror lifting" is to be prevented during this storing period by an electromagnet intended for mirror holding with no direct association with the mechanical release of the shutter, the storing can be performed perfectly without stopping halfway even when the object to be photographed is of such an insufficient brightness as requiring a prolonged time for the storage. In the actual photography, the potential held by the second capacitor is compared with the potential of the third capacitor of the third integral circuit adapted to be actuated simultaneously with the starting of photography. The shutter blades are controlled by a transistorized switching circuit which is adapted to be actuated in association with this comparison of potentials. |
