Hey guys.
My question: How do I use fresnel and a specularity map together?
I’d simply mix them using a rgb color mix node. Multiply, screen, or overlay as initial test. Be sure to use node wrangler to preview the output. You should have some understanding on what the output is supposed to look like, what would make sense. I’d also lookup some PBR tutorials (they tend to explain this) especially if you want roughness to affect the mix (where fresnel varies with roughness).