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260 Chapter 18: Effects and Environments
Min Lum—
Theminimumluminancevalueapixel
must have in order to have the Blur effect applied
to it.
Max Lum—Themaximumluminancevalueapixel
canhavefortheBlureffecttobeappliedtoit.
Brighten—Brightens the portion of t he image that
the Blur effect is applied to.
Blend—Blends the Object ID Blur effect with the
original rendered image.
F. R adi us—Feathers the Blur effect applied to pixels
that fall between the Minimum and Maximum
luminance values. When using Luminance as a
Pixel Selection, the Blur effect can create a hard
edge on the effect. Use the spinner to feather the
blur and eliminate the hard edge of the effect.
Mater ial—Applies the Blur effect to a material or
part of a material with a specific
Material Effects
Channel (page 2–1287)
, if the material matches
theFiltersettings. ToaddorreplaceaMaterial
Effects channel, use the spinners or enter a value in
theIDtextboxandpresstheappropriatebutton.
Min Lum—Theminimumluminancevalueapixel
must have in order to have the Blur effect applied
to it.
Max Lum—Themaximumluminancevalueapixel
canhavefortheBlureffecttobeappliedtoit.
Brighten—Brightens the portion of t he image that
the Blur effect is applied to.
Blend—Blends the Material Blur effect with the
original rendered image.
F. R adi us—Feathers the Blur effect applied to pixels
that fall between the Minimum and Maximum
luminance values. When using Luminance as a
Pixel Selection, the Blur effect can create a hard
edge on the effect. Use the spinner to feather the
blur and eliminate the hard edge of the effect.
Genera l Settings group
Feather Falloff control curve
The Feather falloff curve allows you to determine
the feather falloff off the Blur effect based on a
graph. You can add points to the graph to create a
falloff c urve, and adjust the interpolation in those
points.
Move—Lets you move the points on the graph.
This button is a flyout, providing free movement
(the default), horizontal, and vert ic al movement.
Scale Point—L ets you scale the points on the g raph.
This also moves the points, but in relationship to
each other. Click the p oints you want to scale, or
draw a selection rectangle around them to select
them. ThenturnonScalePoint,andpressany
point in the selection to scale them all.
Add Point—Lets you create additional points on
the falloff curve. This button is a flyout, providing
linear points (the default) and Bezier points with
handle.
Delete Point—Removespointsfromthegraph.
Br ightening—These radio buttons let you select
additive or multiplicative brightening. Additive
brightening is brighter and more dist inct than
multiplicative brightening. Additive brig htening
is useful when you use blur in combination
with a
Glow effect (page 3–222) .Multiplicative