Reflection question

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kazube
Licensed Customer
Posts: 13
Joined: Wed Jun 02, 2010 3:44 pm
Location: Warsaw, Poland
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Hello
First I'd like to thank refactive software for octane, outstanding work Guys! I like it alot.
Since purchase I'm playing with my ZBrush scuplts and materials... but I have a little problem with reflections on glossy materials. Can't fully control them. Even with specular value 0. It looks like permament frensel reflections to me.
Is there any possibility to control this effect or take it off completly? Don't want to use roughness value which gives 'satin' effect.

-left, clayish yellow bust
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OctaneSpecular.JPG
geort45
Licensed Customer
Posts: 10
Joined: Thu Jun 03, 2010 10:02 pm

Maybe pump up the roughness to the max?

BTW those busts look awesome :D !
SysSpecs: dual xeon [email protected], 10GB RAM, GTX 470, win7 x64. nvidia drivers 257.21
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kubo
Posts: 1377
Joined: Wed Apr 21, 2010 4:11 am
Location: Madrizzzz

check this post, I put some examples in 2nd page, hope it helps http://www.refractivesoftware.com/forum ... f=9&t=2024
windows 7 x64 | 2xGTX570 (warming up the planet 1ºC at a time) | i7 920 | 12GB
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radiance
Posts: 7633
Joined: Wed Oct 21, 2009 2:33 pm

Hi,

It's due to the BRDF model used, it's always a specular coating over diffuse.
if you were to set the glossyness at 0, you'd have a plain diffuse material, use that one, it's much more efficient.

Radiance
Win 7 x64 & ubuntu | 2x GTX480 | Quad 2.66GHz | 8GB
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kazube
Licensed Customer
Posts: 13
Joined: Wed Jun 02, 2010 3:44 pm
Location: Warsaw, Poland
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Thanks for reply. I'll be happy to have an option to lower this clearcoat effect, it way to much at this moment. I am currently working on clay-chavant materials, they're a bit reflective but not satinish like roughness gives. Plain materials with additional maps are quite good.
Attachments
Clay. dof, bloom-PS
Clay. dof, bloom-PS
stone map, bump map
stone map, bump map
plain 90% white
plain 90% white
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