| 摘要 |
PURPOSE:To enable the titled circuit to output the information on film sensitivity in the form of both an analog value and digital value by detecting the digital codes expressing the sensitivity value on a cartridge by an analog switch and converting the detected value to a digital value. CONSTITUTION:The digital codes indicating the sensitivity value on a cartridge are read by an analog switch 6 and the value calculated with a reference voltage 1 having a temp. coefft. is inputted to an exposure control circuit 26, by which the temp. compensation of photometric circuits 27, 28, 30 is accomplished. On the other hand, the value read by the switch 6 is compared 53 with the D/A conversion value contained in a counter 55 by analog switches 47-51 and is converted to a digital value. The digital value is used as input to a display and auto strobe circuit. |
