2009

Light with Line shadows and Uniform Spherical distribution. No information
is lost, and the light behaves as it did in prior releases.
Parameters for Photometric Lights
The photometric light parameters are described in the following topics:
Templates Rollout on page 5013
General Parameters Rollout (Photometric Lights) on page 5019
Intensity/Color/Attenuation Rollout (Photometric Lights) on page 5037
Shape/Area Shadows Rollout on page 5040
Distribution (Photometric File) Rollout on page 5044
Distribution (Spotlight) Rollout on page 5046
Other photometric light parameters are shared with standard lights, and are
described in the following topics:
Name and Color Rollout (Lights) on page 4972
Shadow Parameters on page 5099
Atmospheres and Effects for Lights on page 5104
Advanced Effects Rollout on page 5108
mental ray Indirect Illumination Rollout (for Lights) on page 5112
mental ray Light Shader Rollout on page 5115
Other photometric-specific topics include:
IES Standard File Format on page 5034
Example of Photometric Data File on page 5036
Common Lamp Values for Photometric Lights on page 5014
Notes
■ A scene's lighting can also be affected by the Ambient Light setting on the
Environment panel on page 6689.
■ You can use the Place Highlight on page 1018 command to change a light's
position.
■ You can use
templates on page 5013 to create lights that have the properties
of common lamp types.
5008 | Chapter 18 Lights and Cameras