HDV@Work

Published Friday, August 22, 1997

What is Optimal Exposure? Part 2 of 4 Steve Mullen In Part 1, we examined the issues involved in obtaining an optimally exposed image. Now we will look at video gain and shutter speed. The purpose of video gain is to increase picture brightness without the hassle of increasing scene illumination. Unfortunately, at high gain values there is increased picture noise. Within a scene, we do not want shot-to-shot variations in video gain. That's because although varying the gain values will result in consistent shot-to-shot brightness, this might also yield shot-to-shot ...

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