Specular Halo

The Specular Halo channel lets you control the size of the Specular highlight.

The size is controlled by the luminance value of the component you select. Brighter colors (left) create larger highlights and darker colors (right) create smaller highlights.

Colors are expressed as RGB (Red, Green, and Blue) values. Specular Halo channels use the values from each of these channels to set the size of the highlight. If the values are all in balance (that is, all the same), the highlight appears uniform. However, if one value is higher that the rest (for example, R=200, G=100, B=100), you'll get a highlight with a slightly colored ring (for example, a red ring).

Depending on the component you use in this channel, you may be able to set each color value differently to create different highlight effects. The easiest way to use this channel is with a color. When using a color, try picking more desaturated colors. These colors produce more predictable results because the difference between RGB values is less. Check out the Specularity Lesson series in the Misc > Basic category in the Preset Materials Library to see Specular Halo in action.

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