The SweetFX Lift Gamma Gain effect provides a fine amount of control over how gamma is applied to an image. Where a simple brightness effect would brighten the entire scene uniformly, gamma handles this with more “intelligence.” (Luminance is technically not the same as brightness.) The theory and mathematical formulae behind gamma is educational, so the Gamma FAQ might provide a useful introduction for those interested in grasping the technical principles.įor an inaccurate, simplified description related to video games, we can think of gamma as brightening the bright areas and darkening the dark areas without losing too much detail.
Regarding video and images, gamma is an exponential relationship between pixels and luminance.
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