Clamp - Arnold User Guide
Clamps the Input between Min and Max.
Input
Input shader to apply the clamp to.
Mode
It can be set to Scalar or RGB. When set to RGB the input result is clamped between Min Color and Max Color.
Min
Min value.
Max
Max value.
Min Color
The minimum value for the color channels to be used in the output.
Max Color
The maximum value for the color channels to be used in the output.