Adjust > Gamma Correction
Gamma Correction
The Gamma Correction command allows you to adjust the brightness and contrast of an image in unison. The gamma of an image is a standard measure of its contrast and brightness.
1. Do one of the following:
 Choose Adjust > Gamma Correction
 Click the Gamma Correction button on the toolbar
2. Use the following options:
 Gamma
Adjusts the overall brightness of the image.

Min = 10, Max = 999, Default = 100.
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