Plastic is not a metal so the specular should be low, generally anything that is not a metal is about .25 or lower. The plastic on the Wacom that you circled is a dark diffuse, a dark spec, and a bright almost white gloss.
I did glance through the articles before. been reading around trying to understand it more. but I only skimmed the articles. I'll take a deeper look into it and figure this stuff out. by the looks of the spec/diffuse/ref I'm guessing glos looks more like old spec maps (without color) , ref is your spec (atleast in…
since I guess i'm not done with it, i'm reworking the diffuse. sucks that with metalness you lose the ability to control your non-metal reflectivity. oh well. Still trying to get the material right for most of it. the material in the concept looks like a painted metal for the bottom part, and a non-painted for the top, but…