Forum: Carrara


Subject: Using Fresnell Effect as normal setting?

bwtr opened this issue on May 28, 2008 · 6 posts


bwtr posted Wed, 28 May 2008 at 8:01 PM

On another forum, it has been suggested that better rendering results are obtained if the Fresnell Effect is applied to ALL materials.

Appreciate comments.
Brian

bwtr


GKDantas posted Wed, 28 May 2008 at 8:47 PM

That I know fresnel can be used in reflective surfaces... fresnel change the light angle incidence based in the object position and light, so only reflective materials can be better represented using fresnel... I dont know if you will get something different in a stone material with fresnel...

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bwtr posted Wed, 28 May 2008 at 8:56 PM

I use the Shoestring Fresnel plugin. My thoughts are it is used judiciously.

bwtr


MarkBremmer posted Thu, 29 May 2008 at 9:52 AM

 My understanding is that Fresnel efffects are written to interact only with transparent and reflective objects. It does add another layer of calculation to the render and can add to render times.

Mark






bwtr posted Thu, 29 May 2008 at 6:26 PM

Thanks Mark.

bwtr


moogal posted Fri, 30 May 2008 at 4:16 PM

I seem to remember reading that also.  IIRC, it was in reference to Poser and the way Poser's lighting model is fundamentally wrong...  Something about highlights intensifying when they should be diminishing and vice versa.

Seems like I heard of someone doing it for another reason also.