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Gravicx Gravicx avatar image
Gravicx Gravicx asked ·

Subsurface Randomwalk Depth Limit

Hello, it seems that the randomwalk depth has a limit. From the value 0.1 there is no change. Look at the example image below.

Thanks.

C4dtoA 2.4.0.1

shaders
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Daniel Hennies avatar image
Daniel Hennies answered ·

The default export scale in C4D is set to 1 meter, yet it needs to be set to 0.01 meter to honor the internal default dimensions withing c4d. The sss density scaling works fine enough then, so its no bug.

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Peter Horvath avatar image
Peter Horvath answered ·

Yes, there's a technical limitation of the radius of 0.001 (in Arnold units). If your Export Scale is 1 meter (1 Arnold unit is 1 meter) and your C4D Project Scale is 1 cm, then there's a factor of 0.01 during export, so 0.1 cm becomes 0.001 unit in Arnold. Changing the Export Scale in the render settings to match the Project Scale might help.

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F00f C7c8 avatar image
F00f C7c8 answered ·

I too have noticed this. It's especially obvious if you're using the scale parameter in C4DtoA- past a certain point, it doesn't seem to make any difference at all.

-CMPX

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