Very nice, I love rendering 3d stuff. I enjoy making tools built around render API's and such, integrate them into 3d software. Currently I jumped ship on 3dsmax after using it daily for 16 years (I still use it at work though), and now I only work in Blender , currently writing a exporter for PBRT - See my two top posts here: https://stigatle.no/ . I got the PBRT book as well ( http://pbrt.org/ )