Emissive Appearances
Different from standard appearances, they emit light instead of simply reflecting.
While not commonly used, emissive appearances can provide additional lighting to the scene and highlight certain parts of the render. Emissive appearances can be accessed through the Miscellaneous and then Emissive folders of the appearance menu.
Changing the Emission Color
While changing the emission color is not as straightforward as changing the color of a standard appearance, it is still fairly simple. The color should be changed in all 3 places shown below to have the proper coloring.
Adjusting the Luminance
Much like the brightness of the scene can be adjusted, the brightness of emissive materials can be adjusted. Adjusting the brightness to a proper level can be hard without running In-Canvas Renders to check the current look of the render in real-time.
Post-Processing
Unlike renders without emissive materials, the rendered output often looks off, with additional work needed to achieve the desired look. The post-processing page covers this in detail, but consider adding some bloom, decreasing exposure, and increasing the prominence of shadows.
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