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Target Z Specifies the Z coordinate target position of the light. (Spotlight,
Targetpoint, and Weblight only)
Targeted Specifies if the light displays a target grip for orienting the light.
Disabled is the default for Freespot, Pointlight, and Freeweb. Enabled is the
default for Spotlight, Targetpoint, and Weblight.
Attenuation
In the real world, the intensity of light diminishes over distance. Objects far
from the light source appear darker than objects near the source. This effect
is known as attenuation. Attenuation is available under standard lighting
workflow only. Under the Attenuation panel the following property settings
are available:
Type Controls how light diminishes over distance. The farther away an object
is from a spotlight, the darker the object appears. Attenuation is also known
as decay.
■ Inverse Linear (Standard lights only). Sets attenuation to be the inverse of
the linear distance from the light. For example, at a distance of 2 units,
light is half as strong as at the point light; at a distance of 4 units, light is
one quarter as strong. The default value for inverse linear is half the
maximum intensity.
■ Inverse Square (Photometric lights). Sets attenuation to be the inverse of
the square of the distance from the light. For example, at a distance of 2
units, light is one quarter as strong as at the spotlight; at a distance of 4
units, light is one sixteenth as strong.
■ None (Standard lights only). Sets no attenuation. Objects far from the
point light are as bright as objects close to the light.
Use Limits Specifies whether to use limits. The default is No. (Standard lights
only)
Start Limit Offset Specifies the point where light starts as an offset from the
center of the light. The default is 1. (Standard lights only)
End Limit Offset Specifies the point where light ends as an offset from the
center of the light. No light is cast beyond this point. (Standard lights only)
Rendered Shadow Details
Under the Rendered Shadow Details panel, the following property settings
are available:
1554 | Chapter 16 P Commands