| 摘要 |
PURPOSE:To always inform a photographer that required exposure can be obtained even in the case of photographing with flash light for long seconds by outputting a signal showing that the required exposure can be obtained for a specified time after completing photographing. CONSTITUTION:When exposure is started and a synchro switch 78 is closed, a flash tube 18 is triggered, so that light emission is started. When appropriate exposure is attained with the light emission, a 'high' voltage is outputted from a photometry circuit 80 and inputted in a circuit on a stroboscope side through a terminal 54. The 'high' voltage is interpreted as a light emission stopping signal on the stroboscope side, so that the light emission is stopped while the flash tube 18 is emitting light and a 8Hz pulse signal is outputted for one second from a terminal 52 when the arrival of the signal is within the specified time by counting since the synchro switch is closed. In response to the signal, a light emitting diode 68 is made to flicker so as to display that the required exposure can be obtained. Thus, the photographer can be informed that the required exposure can be obtained. |
