Shadows – When enabled When enabled (the default), the light casts shadows. Disable to turn off shadow casting for the light. For more information, see the Size of Lights, Shadows and Intensity example earlier in this page.
Shadow bias – Moves the shadow toward or away from the shadow-casting object (or objects). Higher values move the shadow toward the object(s) while lower values move it away. If this value is too extreme, shadows can "leak" through places they shouldn't or "detach" from an object. Other effects from extreme values include moire patterns, out-of-place dark areas on surfaces, and shadows not appearing at all in the rendering.
Shadow Color – Controls the color of shadows for this light. Note that anything different from black is not physically correct. This option is inactive when using the V-Ray CUDA engine.
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5%
Column
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35%
Photon Emission
...
Section
Column
width
60%
This rollout is inactive when using the V-Ray CUDA engine.
Caustics subdivs – Used when calculating Caustics. Lower values mean more noisy results, but will render faster. Higher values produce smoother results but take more time.
Caustics multiplier – A multiplier for the generated caustics by the selected light. Note that this multiplier is cumulative - it does not override the multiplier in the Caustics rollout of the render settings.
UI Text Box
type
note
Photon Subdivs and Diffuse Multiplier parameters no longer show in the UI, as they are related to the Photon Map GI engine, which is deprecated. They are still accessible through script, if needed.
