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CINEMA 4D Renderer
CINEMA 4D will automatically turn on Auto Light in a scene if there are no light objects present. When using
Global Illumination, this automatic function is excluded since it would make the scene much too bright.
Create a sphere (Create/Object/Sphere). Move the sphere along the X-axis a little to the right and a Y-position
of 100 until it’s next to the Torus. Copy the sky material (Ctrl + drag into the Material Manager) and switch to
the Luminance channel of the new material. Use the color sliders to create a bright blue. Drag the material
onto the sphere.
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.