| 摘要 |
<p>PURPOSE:To prevent misoperation and to improve operativity by performing bulb exposure after self-timer operation when a bulb and a self-timer mode are selected simultaneously, and displaying both states distinctively. CONSTITUTION:When a release button switch 2 is turned on while switches 1 and 3 for self-timer selection and bulb selection are both on, displays 21 and 22 of self-timer time counted by down counters 19 and 20 are made. When the display value attains to zero, a DFF4 is reset and a release signal is supplied to a release control circuit 10 to start the bulb exposure. On the other hand, the DFF4 is reset and the counters 19 and 20 which enter a map mode make the displays 21 and 22 of bulb elapsed time at intervals of one second. Once the release button is released from being pressed down, a trailing shutter curtain runs and the exposure is completed.</p> |
