“A few years ago I started down this path of creating this 3D camera system and once I started working in that, I couldn’t imagine myself going back and shooting with the camera that I used before. It just seemed like going back from a car to a bicycle, and I don’t want to ride a bicycle again, so the question is, at what point can I use the kind of imaging that we’re able to do now for a feature film?” From the Rebel Billionaire to the King of the World, James Cameron (fresh off Aliens of the Deep), talks up 3D cinema and his next project, a live-action Battle Angel Alita.