Image Source: https://academy.substance3d.com/courses/the-pbr-guide-part-1, PBR Guide, McDermott, Wes GGX most modern and flexible BRDF (Bidirectional reflectance distribution function) type and is able to better represent a broad range of materials thanks to its ability to control the shape of the specular lobe. Blinn is good for metallic surfaces with soft highlights, such as brass or aluminum. Because Blinn is a versatile material type and generally renders without problems, it's the primary material type we've used in these tutorials. SOURCE: https://academy.substance3d.com/courses/the-pbr-guide-part-1 https://www.peachpit.com/articles/article.aspx?p=31330&seqNum=3#:~:text=Blinn%20is%20good%20for%20metallic%20surfaces%20with%20soft,primary%20material%20type%20we%27ve%20used%20in%20these%20tutorials.
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