This page gives some basic details about the Raw Reflection render element and how it is used in compositing.
||Render Setup window|| > Render Elements tab > Add button > VRayRawReflection
This render element is enabled through the Render Elements tab of the Render Setup window in 3ds Max and displays its parameters in a rollout at the bottom of the window:
vrayVFB – Enables the render element inside the V-Ray frame buffer.
deep output – Specifies whether to include this render element in deep images.
color mapping – Applies the color mapping options specified in the Color mapping rollout of the V-Ray tab in the Render Setup window to this render element. This option is enabled by default.
multiplier – Sets the overall intensity of the render element, where 1.0 is the standard multiplier.
denoise – Specifies whether to denoise this render element.
The Raw Reflection Render Element is useful for changing the appearance of reflective scene elements in compositing or image editing software after the scene is rendered. Below are a couple of examples of its use.
Underlying Compositing Equation