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Tone Mapping#

Tone mapping remaps the color of each sub samples by using user defined curves. Tone mapping is applied prior final pixel integration. This means it is applied right before sub-samples are integrated by the anti aliasing filter to produce the final pixel color.

This allows you for example to clamp high luminance value near very bright spots to improve anti-aliasing. To activate Tone Mapping, just check Enable Tone Mapping. By default, the tone mapping curve clamps negative values and values higher than 1.0.

Raw render

Raw render

Tone mapping curve clamping values above 1.0.

Tone mapping curve clamping values above 10

In the images below we can see how aliasing has been reduced on the right (tone mapping on) compared to left (tone mapping off)

See how aliasing has been reduced on the right tone mapping on compared to left tone mapping off

Affect Color Aovs#

When enabled, tone mapping is applied on all image buffers/AOVs that have their Visual Hint defined as Color.