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Old 08-07-2013, 02:54 PM   #1
noneo2
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VRay IOR and reflection color dependence?

Hello.
If IOR (in fresnel equation) defines how quickly reflection changes (from 4% -for glass at normal angle to almost 100% (almost means 99,999%) at 90deg or from 40-60 for example for metals an normal angle to near 100% at 90degrees) AND ALL materials have fresnel reflectance: brick, paper, walls have fresnel - with various VISIBLE reflectance intensity (due to MICROFACETS, "little irregularities" in surface we cannot see "mirror" reflections, rather very glossy for bricks, paper etc & very low IOR: 2-4 = low reflectance) MY QUESION: What is dependence between IOR graph and reflection color slot??? (we know already, that for all materials refl at 90deg =100 (white) - fresnel, of course). REFLECTION COLOR SLOT in Vray mat IS FOR.....???? How gray values in refl color slot changes IOR GRAPH??
Piotr
 
Old 08-07-2013, 02:54 PM   #2
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