| 摘要 |
<p>PURPOSE:To display the dimming completion accurately, by lighting a dimming completion indicator lamp only when the quantity of the emitted light of a proper exposure level or an exposure level in an allowable range is obtained after the end of strobe light emission. CONSTITUTION:The first gate circuit which accepts the light emission stop signal from a TTL camera in the first period including the overall flash light emission period, the second gate circuit which accepts the exposure level signal from the TTL camera in the second period following said first period, and a dimming completion display circuit 67 are provided. Further, a circuit, which stops the flash operation when the light emission stop signal is inputted in said first period, and a circuit which drives the dimming completion display circuit 67 by the output of the second gate are provided. Said circuits are provided in, for example, a controlling circuit 60 having connection terminals J'1-J'4 to the camera.</p> |
