It may be a different workflow, but the end result is the same (or better) and it renders faster. This new workflow makes the old one obsolete. It's like keying an image. We could create a matte shot by obscuring the background with cut-out cards. Thus, when the live action portion of our scene is filmed, the background portion of the film isn’t exposed. Once the live action is filmed, a different cut-out could be placed over where the live action now sits on the partly-exposed film. The film would be rewound, and we could film our new background. However, I prefer the workflow of shooting on a green screen and keying it out thus skipping the double-exposure and, in fact, skipping film entirely. That's how I see C4D integration as opposed to the ray-traced renderer. It's faster, more powerful, and your end result is better. Plus, as a bonus, it doesn't require a specific GPU from a single manufacturer to work because it isn't reliant on proprietary technology.
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