https://techgage.com/article/autodesk-arnold-render-gpu-beta-performance/
Hadi Karimi
Arnold Core Developer
Fausto de Martini
An Arnold render I did using a model courtesy of the incredible Fausto de Martini. Got to love unbiased rendering!
Announcing Arnold 5.3 Featuring Beta GPU Rendering: Adrien Herubel
Depth, Dust, & Position Procedural Masks
Incandescent Metal Material
Microfacet Model for Rough Metals (5.3)
Tests by Jamie Portsmouth.
” Arnold 5.3 adds multiple scattering to its microfacet model for rough metals, which restores missing energy. Here are renders of 4 different metals (gold, copper, silver, and nickel) with roughness increasing from left to right, and multi-scatter on/off in successive rows. “
arnold-rendering.com 
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