Simply Maya User Community - View Single Post - The Animation Process

That is you render every aspect like color, highlight, lights, etc passes into separate image sequences. After that you combine them in a compositing software like Adobe AfterEffects

Originally Posted by

I don't understand this - Can you explain? Or point me to a tutorial?

It sounds like for any given frame you will have mulitple pictures and then use stack them (or somehow combine them) on top of each other to create 1 single frame in AfterFX.