In 3D, nothing can make or break a scene as much as light. The human eye is especially adept at processing highlights and shadows into intelligible shapes and objects we recognize. In this interview, Mark Lefitz with his architectural background talks about his early career working on such remarkable projects as the Guggenhaim Museum in Bilbao (image below) and more recently on some of the biggest CG films ever made, including Spider-Man 2, The Matrix sequels and many many more (check IMDB for details).