Cinema 4d Renderman connection
Maxon hs released a tool called Cineman which lets you render directly from Cinema 4d to Pixar’s prman, dna’s 3delight and sitegraphics AIR:
CineMan translates the entire CINEMA 4D scene, including lights and materials to a RenderMan-complaint RIB file. CINEMA 4D shaders are immediately available in RenderMan, and RenderMan shaders can even be used within CINEMA 4D as long as a compatible render engine is selected. Best of all, third-party render engines integrate seamlessly into CINEMA 4D, providing editor rendering and material previews.