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Caustics is an effect that is produced when light rays are reflected or refracted by the materials within a scene, which can produce light patterns on objects in the scene. The Caustics Render Element displays these effects, generated with Caustics photon mapping. It is enabled from the Caustics rollout under the GI tab in the Render Settings window. This render element is useful for enhancing or toning down caustic effects in the composite.

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The parameters for this render element appear in

the V-Ray RenderChannelColor

 render channels node.

Deep Output – Specifies whether to include this render element in deep images.

Color Mapping – When enabled, the Color Mapping options in the render settings are applied to the current render channel.

Consider For AA – When enabled, anti-aliasing

is used where possible.

Filtering

 – Applies the image filter to this channel. Image filter settings are in

the Image

 Sampler tab

 of the Sampler tab

 of the 

V-Ray

 Renderer node.

Denoise – Enables the render element's denoising, provided the V-Ray Denoiser render element is present.

Derive Raw Channels

 – Generates data in the raw channels by combining the respective color and the filter color channels.

VFB Color Corrections

 – Applies the post render color adjustments made from the VFB.

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Original Beauty composite