Chris, your videos are technically flawless. Your contribution to the community is priceless. Keep doing more videos !

Hi Chris, You always explain techniques in a very clear understandable way. I do not use Photoshop and always find it hard to understand varies mix modes. With this tutorial, I know much more about mix and multiply node.🙂 I would love to hear more more about other mix modes (screen, overlay etc) and their use scenarios. Thank you very much for your sharing.

Thanks so much for this one Chris. I was sort of getting tired of some other tutorials out there which basically say don't touch the Specular slider - just leave it at default 0.5. I myself always try to add something to Specular, such as a noise texture squished down to a 0.4 to 0.6 range... because almost nothing in the universe has a completely homogenous and uniform surface (examples might be: highly polished diamond, puddle of mercury, high quality spotlessly clean glass). I know you know this, but for the sake of viewers like myself with inferior graphics cards who might have VRAM optimization as a high priority... There is no real need to prepare and load yet another bitmap to drive the Specular. You can just take the diffuse bitmap, run it through a Separate RGB node, and pick one of the channels (red, green, or blue) as the greyscale to feed into the Specular mix.

Will plugging bitmap in roughness slot be more physically accurate? Or altering specular parameter is also “correct”?