The V-Ray Light Mix render element provides adjustment control to the lights in the scene from inside the V-Ray Frame Buffer. When a V-Ray Light Mix render element has been added before rendering, the intensity and color of the lights and light emitting materials can be changed directly from the VFB during and after rendering; lights and self-illuminating materials can be enabled or disabled on the go, without the need of re-rendering your final output, or navigating to individual lights parameters during IPR. Furthermore, modifications made in the LightMix can be transferred back to the actual lights and materials in the scene with a single click. This feature can handle individual lights and emitting materials as easily as light groups, layers or custom selections.
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When working with the V-Ray Light Mix element, make sure to place it first into the list of AOVs in the V-Ray Renderer Elements ROP.
