Gamma vs. Brightness?

AW
Posted By
Allen_W
Apr 22, 2005
Views
486
Replies
2
Status
Closed
What’s the difference between gamma and brightness? Thanks.

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S
Stroker
Apr 22, 2005
In the world of coding, Brightness is Max(RGB). That is, you compare R, to G, to B, and take the highest of the three.

Example:
R = 156
G = 10
B = 122
Brightness = 156

With those numbers, if you go Brightness += 10, you then get: R = 166
G = 20
B = 132

You can derive Brightness with some savvy use of Apply Image and Lighten. You can even manipulate Brightness with certain other blending modes.

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