The header on this thread asks if "Carrara 5 - impressive or not? I'm impressed, but I am a long time Carrara user (& a beta tester). Looks like the title should have been "Carrara SSS..... Impressive or not?" I don't know if it is based off the mathematical lighting model you are looking for or not, maybe you can tell from the options shown in the scene cap. Making or breaking the deal based on a single feature does not make much sense to me, but how people spend their hard earned money is not any of my business. I like what they have done with this version. wayne k guam usa