This page provides information about Raw Reflection Filter Color Channel in V-Ray for Houdini.
Overview
The Raw Reflection Filter is similar to the Reflection Filter channel, except it is not affected by Fresnel falloff. The result is a solid mask showing the areas of reflection.
UI Path: ||out Network|| > V-Ray Render Elements node > V-Ray > Render Channel > V-Ray Color Channel (RE) > Type > Raw Reflection Filter
Usage Notes
The Raw Reflection Filter Color Channel is useful when a precise mask is needed for reflective objects. Unlike the Reflection Filter Color Channel, there is no need to clip or readjust values when pure black or white is required for the composite.