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How does Automatic Gain Control (AGC) work?
Does AGC prevent overexposure, if so, how? I noticed a menu setting for turning it on but the manual says little or nothing about its functionality.
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1 Reply
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In short, AGC electronically increase the amount of light the camera is able to process. It is typically used in low-light situations to compensate for the lack of “natural” light.
You would NOT use AGC to limit over-exposure. If fact, AGC would do just the opposite.
On other issue with using AGC is because it’s an electronic enhancement of the image, it introduces artifacts or “graineyness” into the picture. The higher the AGC setting, the more “noisey” the picture becomes.
Hope this helps.
Cheers,
Tim Scarpino
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