2009

Although light exclusion does not occur in nature, this feature is useful when
you need exact control over the lighting in your scene. Sometimes, for example,
you'll want to add lights specifically to illuminate a single object but not its
surroundings, or you'll want a light to cast shadows from one object but not
from another.
NOTE By default, no objects are excluded for a new light. It’s necessary only to
include objects that have previously been excluded.
See also
Lights on page 4970
Light Lister on page 5000
Procedures
To exclude an object from receiving light:
1 In the scene, select the object or objects to exclude.
2 Open the Light Incl/Exl dialog.
See the path annotation, above. To use the Light Include/Exclude tool,
you have to create a custom keyboard shortcut, quad or menu item, or
toolbar button.
3 In the Geometry group, choose Exclude.
4 Click the Assign To Light button.
5 In the scene, click a light. If the light is hard to locate, use the
Pick Object
dialog
on page 228(keyboard shortcut H) to pick the light.
The object is now excluded from the light. The Objects list at the bottom
of the dialog lists the object.
6 Render to see the effect.
4998 | Chapter 18 Lights and Cameras