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CINEMA 4D R11 Quickstart – Global Illumination
We now want to use the blue sphere as a light. We don’t want the sphere to be visible, but only to emit its blue
color. You achieve this by using the “compositing tag“.
Apply a compositing tag to the sphere in the Object Manager (Tags / CINEMA 4D Tags / Compositing). Switch to
the Attribute Manager and deactivate all options except “Seen by GI“ (Global Illumination). Render the scene.
You will see that a blue light is being cast on the torus and the floor. The blue sphere is not rendered because
we have made it invisible using the camera’s compositing tag.