Traditionally, fairly simple analytical models have been used to approximate surface reflectance properties, but they work well only for a small set of materials like plastics or metals, which is why most computer graphics today still looks “plastic”. On The Matrix Reloaded we were required to deliver fully computer generated" copies" of the principal actors for many scenes that are inter-cut with live-action footage. We wanted to escape from a “plastic” computer generated appearance and try to measure true reflectance of certain materials such as the actor’s costumes.