| 摘要 |
PURPOSE:To perform excellent photography with proper exposure by inhibiting stroboscopic light emission and placing a stop device from the full aperture state once an automatic focusing device detects a subject being beyond an effective stroboscope distance. CONSTITUTION:An automatic focusing circuit AF10 generates an H-level output when detecting the subject being beyond the specific effective stroboscope distance. A shutter control circuit 12 generates an H-level output when a shutter release button enters closing operation. Both outputs are inputted to the set terminal S and reset terminal R of an FF14. The Q terminal of the FF14 is connected to the base of an NPN type TR16. When the shutter release button is pressed to an intermediate position and the H output of the AF10 is sent out and inputted to the FF14, the FF14 outputs H to turn on TR16, and a stroboscope stop magnet 20 and an additional stop turn-on magnet 18 are excited. Consequently, a miss of photography is prevented and excellent photography with proper exposure is performed. |
