| 摘要 |
PURPOSE:To execute an exact exposure second time photographing by a simple constitution by delaying a shutter start signal by a necessery time, and controlling energizing of a shutter magnet. CONSTITUTION:A capacitor 106 is charged by a shutter start signal SDS generated in accordance with a shutter release, and the second shutter start signal SBS which is delayed in accordance with influence by a mechanical delay of opening and closing of a shutter, a residual magnetism of an electromagnet, etc. is outputted from a comparator 107 in accordance with a charging time constant. Subsequently, a transistor 109 is turned on through an AND circuit 108, and a shutter magnet 10 is energized. Degaussing of this magnet is executed in accordance with a set shutter second time. According to them, an exact exposure second time photographing is executed by a simple constitution. |
