Position: Index > Sensor Circuit >

Camera Electronic Photometering System Circuit

2014-11-09 00:58  
Declaration:We aim to transmit more information by carrying articles . We will delete it soon, if we are involved in the problems of article content ,copyright or other problems.


Camera Electronic Photometering System Circuit
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.