The RGB Spectrum node is used to assign any RGB color to your material or material channel. The RGB Spectrum node can be wired to any channel with a Texture input. The RGB Spectrum node is different than the Gaussian Spectrum node in a number of ways, most of which are described in the Gaussian Spectrum topic. The most important difference regarding RGB Spectrum and Gaussian is that the RGB Spectrum node uses simple RGB values, which limits the true range when rendering with high light intensity values.


RGB SPECTRUM NODE


How to Use

Open the Node editor and prepare the setup as seen in the image below.