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Rendering with Arnold in CINEMA 4D using the C4DtoA plug-in.
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C4DtoA HDRI Blur

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abodal
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C4DtoA HDRI Blur

Is it possible to blur an HDRI in C4DtoA?

For example, if I have a highly reflective surface (let's say chrome), and am lighting my scene with an HDRI, it would be nice to be able to use a specific HDRI for lighting but blurring it so that a perfect mirror image of the HDRI doesn't appear in my reflective surface.

Obviously I could just make a copy of the HDRI texture and blur it in Photoshop, but I'm wondering if there is a way to do this directly in C4DtoA/with Arnold in general.

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lee_griggs
in reply to: abodal

You could lower the Resolution of the Skydome light, but it probably wouldn't look very good closeup.

Adding Specular Roughness would be a more physically accurate way to do it.

Lee Griggs
Arnold rendering specialist
AUTODESK
Message 3 of 3
abodal
in reply to: abodal

Thanks for the tip, I'll try it out.

Also wasn't exactly sure what you mean by adding specular roughness. Do you mean to the texture (hdri for example)?

**EDIT**

Haha nevermind, assuming you meant adding it to the reflective material. The answer was so obvious it was hiding in plain sight 😛

Thanks again!

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