Channel Map Range
The Channel Map Range Output AOV node can be used to remap the input pixel values to specified output pixel value ranges for RGB, Alpha, or RGB+Alpha (figure 1). The Clamp parameter clamps the values to the minimum and maximum range, otherwise, values outside the range will be unmodified.
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channel map range
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Figure 1: The Channel Map Range Output AOV node used to remap the Input Maximum and Output Maxximum pixel values for the Diffuse AOV in a composite node tree