Doc:Manual/Lighting/Lights/What Light Affects

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Manual - Blender 2.48

[edit] What the Light Affects

Every lamp has a set of switches that control which objects receive its light, and how it interacts with materials.

Lamp panel with the Light affecting options highlighted in yellow.
Layer
Causes the lamp to only light objects on the same layer.
Negative
The light produced by the lamp is subtracted from the one “available” on the surfaces it hits, which darkens these surfaces instead of brightening them.
No Diffuse
Prevents the lamp from producing diffuse light.
No Specular
Prevents the lamp from producing specular highlights.






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