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Gamma

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A measure of the brightness and contrast of a monitor or the midtone brightness of a digital image. Adjusting the Gamma slider within an image-editing program will adjust the midtones while maintaining detail in the highlight and shadow areas. Adjust the monitor gamma to make the image appear more natural to your eye. A setting of around 18 is right for a Mac monitor while a 2.5 setting is more appropriate for a PC.

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