This page gives some basic details about the Raw Total Lighting Color Channel and explains how it is used in compositing.
Overview
The Raw Total Lighting Color Channel is the sum of all raw lighting (both direct and indirect) in the scene, without any diffuse details.
This pass is useful for changing the appearance of the scene's lighting in a compositing or image editing application.
UI Path
||Node Editor|| > Add > Render Channels > Color Channel > Type > Raw Total Lighting
Common uses
The Raw Total Lighting channel is useful for changing the appearance of the entire lighting of the scene after rendering, using a compositing or image editing application. Below are a couple of examples of possible uses. The first two images show the render element itself and the Beauty render put together. The Raw Total Lighting Render Channel was brightened and tinted differently to show the range of editing possible.
The Raw Total Lighting Render Element
The Original Beauty Composite
Brightened and tinted Raw Total Lighting Render Element
Brightened and tinted Raw Total Lighting
Underlying Compositing Equation
Raw Total Light x Diffuse = Total Light
Raw Light + Raw GI = Raw Total Light
