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Chapter 20: Using Lights and Basic Lighting Techniques

You can also access the Volume Light effect from the Atmospheres and Effects rollout in the Modify panel
when a light is selected.

Cross-Ref
Chapter 46, “Using Atmospheric and Render Effects,” covers the other atmospheric effects. n

Volume light parameters
At the top of the Volume Light Parameters rollout, shown in Figure 20.14, is a Pick Light button, which
enables you to select a light to apply the effect to. You can select several lights, which then appear in a
drop-down list. You can remove lights from this list with the Remove Light button.

FIGURE 20.14
The Volume Light Parameters rollout in the Environment dialog box lets you choose which lights to include in the
effect.

In the Volume section, the Fog Color swatch lets you select a color for the fog that is seen within the light.
This color is combined with the color of the light. The Attenuation Color is the color the fog appears to
have at a distance far from the light source. This color also combines with the Fog Color and is best set to a
dark color.
The Density value determines the thickness of the fog. The Exponential option causes the density to
increase exponentially with the distance. The Max and Min Light Percentage values determine the amount
of glow that the volume light causes, and the Attenuation Multiplier controls the strength of the attenuation
color.

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