| 摘要 |
PURPOSE:To execute manually focusing to a place supposed in advance by providing a means for inhibiting an operation of a lens driving motor so that an automatic focus control function cannot be operated at the time of photographing by a self-timer. CONSTITUTION:When a selecting switch SW2 is set to an SELF mode C1, a distance detecting circuit 15 outputs voltage corresponding to a distance to an object to be photographed, to an operational amplifier 11 and a focusing discriminating circuit 16, but a motor M does not rotate since its ground is cut off. When a lens barrel 13 is moved manually, seeing a display in a finder, focused, and a switch SW1 is turned on by the second stroke of a release button, reset of a counter 5 is released through an OR gate 6, a clock pulse from a pulse generator 4 is frequency-divided and outputted, a monostable multivibrator 10 energizes a shutter release magnet Mg1 for a prescribed time, and a shutter release operation by a self-timer is executed. |
