| 摘要 |
PROBLEM TO BE SOLVED: To efficiently adjust a photometric circuit. SOLUTION: This adjusting device 66 is provided with a switching circuit 77 for intermittently feeding electric power to the photometric circuit 41, a signal level determination circuit 78 detecting a continuity/discontinuity condition of a primary transistor 55 controlling drive of a diaphragm switching solenoid, and green and red light emitting parts 74 and 75. A CdS 36 is irradiated with light of reference subject luminance at which diaphragm switching operation is carried out. The green light emitting part 74 is turned on when the transistor 55 is brought into conduction, while the red light emitting part 75 is turned on when the transistor 55 is cut off. When operation of the transistor 55 is switched between the continuity condition and the discontinuity condition, flashing of the green light emitting part 74 and that of the red light emitting part 75 is switched mutually, and while checking this, a semi-fixed resistor 59 is operated to be adjusted. |
