Metals have low IOR values like 0.45 . Clearly if you enter that value in the surface model vop for your IOR your going to get a render that looks far from correct.So bar making my own fresnel falloff to make something look artistically nice , I just wondered what IOR value should be entered for say gold ?
Kind regards
Rob
IOR > surface model VOP > metals
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- circusmonkey
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- Andy_23
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Hi there,
have a look here, the lower part applies to IOR:
http://mentalraytips.blogspot.de/2007/10/making-better-metal-with-miamaterial.html [mentalraytips.blogspot.de]
From my testings and the usual implementations of fresnel falloff this applies to the mantra surface shader too.
Crank up the fresnel, but keep your reflection intensity sane. Unless you need some ultra shiny polished metal surface start in the range of .3 to .5 intensity.
Cheers,
Andy
have a look here, the lower part applies to IOR:
http://mentalraytips.blogspot.de/2007/10/making-better-metal-with-miamaterial.html [mentalraytips.blogspot.de]
From my testings and the usual implementations of fresnel falloff this applies to the mantra surface shader too.
Crank up the fresnel, but keep your reflection intensity sane. Unless you need some ultra shiny polished metal surface start in the range of .3 to .5 intensity.
Cheers,
Andy
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- circusmonkey
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