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« on: 2015-11-29, 12:50:31 »
I'm trying to work out the correct way to create darker metals. From how I understand it I can create a metal by just using the reflective channel (c4d version so diffuse is left unchecked = black). I can then adjust the Ior upwards to around 20 to create a reflective metal. The brightness of the material increases as the Ior increases and I as I understand it metals are generally about 20. So if I want a dark metal like a gun metal should I control the brightness of the material by darkening the reflection colour value, or, by reducing the Ior back down, or both? Then adjust the glossiness to suit.
Also for other Ior values, coming from vRay I would use a value of about 3 for the majority of materials like concrete/brick/wood and maybe 5 for plastics. Is this the same in corona? I see the default range in the slider on c4d just goes up to 3 which makes me think 3 might be a bit high.
Thanks for any help on this.