Camera Electronic Photometering System Circuit

Published:2011/5/4 22:52:00 Author:chopper | Keyword: Camera, Electronic, Photometering System | From:SeekIC

In the mid-range cameras,CdS photoresistor acts as aelectronic photometering component.When light reach the CdS photoresistor through the pore plate,move the density board to blance the circuit.And the even light sent out by two LEDs means optimum aeration.It meas underexposure or overexposure when one of the LEDs is brilliant while the other is dark.At this time,moving the density board would be a solution to get a optimum exposure.



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