| 摘要 |
PURPOSE:To control the focus on a silver salt film camera side as well as an electronic camera side by providing a control means which drives first and second focusing mechanism based on distance data measured with a distance measuring means. CONSTITUTION:When an optical system 5 is focused and a shutter switch 10 is turned on, the light projected on a photodetector 32 is photoelectrically converted and is inputted as photometric data from a photometry control part 37 to a control circuit 35. The control circuit 35 determines the values of control signals S1-S4 from inputted photometric data based on given shutter speed and sensitivity data and sends them to a diaphragm control part 39, a shutter control part 41, a diaphragm control part 42, and a shutter control part 44. Diaphragm control parts 39 and 42 control diaphragms 40 and 43 in accordance with signals S1 and S3, and shutter control parts 41 and 44 control the opening operation of shutter curtains 20 and 23 in accordance with signals S2 and S4. Thus, focus is controlled in the silver salt film camera as well as the electronic camera. |
