Blender’s Light Linking is a powerful feature which allows you to control which objects in a scene are affected by light sources. This provides you with additional freedom, especially when designing intricate lighting configurations.
Using Light Linking in Blender
Enable Light Linking: While Blender does not yet have light linking built directly into it, you can fake that by using Light Groups in the Shader Editor.
Light Groups: This feature allows you to assign different objects and lights to different light groups, controlling how they communicate.
Assign Lights to Groups: In Shader Editor — Add Light Path and assign the light types to utilize a Mix Shader to control how much the light affects specific objects.
Keep Shadows and Reflections in Check: Shader Nodes can also help you dial in how shadows and reflections are computed for individual objects. Some of the objects may need to receive light without casting a shadow, for example.
By using light linking, you gain greater control over where and how your lights affect objects in a scene, enabling more sophisticated lighting that adds realism to scenes.
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