| 摘要 |
PURPOSE: To attain photographing by proper exposure even when GNO control by daytime synchronism is performed at a lens shutter camera by setting a hold voltage different from a driving voltage at the time of focus driving at the time of focus holding. CONSTITUTION: When an operating switch 13 is operated, a certain number of pulse signals corresponding to range-finding data are outputted from the respective terminals of an IFIC 20, a pulse motor 22 is driven corresponding to these pulse signals, a focus lens is fed out, and an object is focused. After focusing by lens extend, an MAG signal is outputted and a shutter is opened and closed. After focusing is completed by extending the lens, a fixed voltage is electrified to the pulse motor 22 and the focus position by the focus lens is held. At such a time, however, an FPMV signal is turned to 'L', a constant voltage driver 21 is functioned and the hold voltage lower than the driving voltage in the case of focus driving is supplied to the pulse motor 22. |
