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Principled BSDF IOR Fix


BlackhartFilms writes:

The first release candidate for 2.79 is out, and with it officially comes the Principled BSDF Shader! However, one quirk you may have noticed is that there isn't an IOR control for your dielectric and metallic reflectivity, only an ambiguous "specular" control. This video explains what that specular slider means, and gives a link to download a nodegroup that does the math for you so that you can use real-world fresnel IOR values to control your specular input.

About the Author

My name is Jeffrey Hepburn- I'm a filmmaker, graphic designer, 3D Artist, and programmer. I'm a Microsoft Certified Professional & Technology Associate, certified in Photoshop and Premiere Pro, and proficient in After Effects, Blender 3D, Allegorithmic's Substance Live, Audition, and Illustrator. I've been working with Blender for over 6 years, and I specialise in hard-surface modelling, PBR texturing, and the Cycles node editor.


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