CineRender Surface Settings Series Part 3 Luminance Channel in ARCHICAD

Ok let's talk about the tutorial Part 3 of this Surface Material Series is looking at the Luminance channel. If you know how to use it , you can achieve some excellent looking results. Actually, you can use this skill to slightly lighten up a dark ceiling as example. I know this is cheating a bit but if you run out of time to deliver your CGI to the client and this helps, nobody will ask you how you did :)   / carstenemde