You can always use both near and far attenuation to set a sliver of light in your scene, as
shown in Figure 10.45. As you can see, attenuation is a more precise way to set a diminishing
light intensity over the Decay Type.
Far Attenuation End
Omni Light Source
Far Attenuation Start
Figure 10.44
The Attenuation
display for an
Omni light
Figure 10.43
The spotlight displays the attenuation distances.
Figure 10.42
Far attenuation fades out the light.
Light Source
Far Attenuation End Gizmo
Far Attenuation
Start Gizmo
Light Target
common light parameters ?– 479
Advanced Effects Rollout
The Advanced Effects rollout (shown in graphic on the left) enables you to control how
a light affects the surfaces it illuminates. You can increase or decrease the contrast and
softness of a light??™s effect on a surface. You can also dictate which lighting component of
the light is rendered on the surface.
Contrast and Soften
By adjusting the Contrast and Soften Diffuse Edges values, you can alter the way the light
hits your surface. The following image (Figure 10.46) was rendered with default Contrast
and Soften Diffuse Edges values,
This image (Figure 10.47) was rendered with a Contrast of 25 and a Soften Diffuse
Edges value of 50.
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