From Pixar Studios‘, What Is Renderman?
Leading digital effects houses and computer graphics specialists use Pixar’s Renderman® because it is the highest quality renderer available anywhere and has been production tested through successful use in feature films for over ten years. Pixar’s Renderman is stable, fast, and efficient for handling complex surface appearances and images.
RenderMan’s powerful shading language and anti-aliased motion blur allow designers to believably integrate stunning synthetic effects with live-action footage. In addition, Renderman is backed by Pixar’s technical staff, who know the challenges of creating digital effects.
Renderman is also an industry standard interface specification for photorealistic renderers.