This component is obsolete and its use in filters is not recommended. Use the recent version of the component.
The Gamma component performs a gamma correction on the image provided by the Source input, adjusting the relative brightness of its midtones. This operation affects only the color of the source image, it does not affect its alpha channel. This is a map component, it can be located in the Adjustments category on the Components Bar.
Provides the source image on which the gamma correction will be performed. This is a required input – in order to make the Gamma component work, this input must be connected.
Gamma: Map Input
Specifies the gamma value for the correction. Gamma correction affects mostly the midtones of the source image, it has less effect on the highlight and shadow areas. Values above 0 result in brighter midtones, and values below 0 lead to darker midtones. Completely black and completely white areas of the source image remain unaffected. Gamma of 0 has no effect on the source image.
Since Gamma is a map input, Filter Forge uses values ranging from -100 to 100 instead of the commonly accepted gamma range of 0.1 to 10. The parameter value of 0 is equivalent to gamma of 1 and has no effect on the source image. See Gamma Correction for the table of gamma values and their corresponding Filter Forge percentages.
