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368 Chapter 19: Video Post-Production
Scene group
Affect Alpha—Specifies whether or n ot the glow
affects the alpha channel of the image, when
rendered to a 32-bit file format.
Affect Z B uffer—Specifies whether or not the glow
affects the Z-Buffer of the image. When this
option is enabled, the linear distance of the glow
isrecorded,andcanbeusedinspecialeffects
that make use of the Z-Buffer. For example, Lens
Effects Focus blurs objects based on their Z-Buffer
information. To use Focus with a glow, you must
enable this option.
Distance Fade group
Thesecontrolsfadethegloweffect,basedonits
distance from the camera. This is the same as
distance fade for the lens flare.
Bright—Lets you fade the brightness of the glow
effect based on the distance from the camera. This
is ideal for submarine running lights and any othe r
effect where you want your glow to disappear into
the distance. This parameter can b e animated
(page 3–349).
Size—Lets you fade t he size of the glow effect
based on the dist ance f rom the c amer a. In most
circumstances, you want t he overall size of the
glow to diminish as it gets farther away from the
camera. This parameter can be animated.
Lock —When selected, locks the Bright and Size
values together, so that the size and brightness
fading is synchronized.
Effect group
Size—Sets the size of the overall glow effect. This
parameter can be animated.
Softness—Softensandblursthegloweffect.Values
range f rom 0 to 100. This control is enabled only
when you use Gradients as the color method (see
the next section). Softness is only available when
theGradientoptionintheColorareaisselected.
This parameter can be animated.
Color group
Gra dient—Creates the glow based on the settings
in the Gradients panel. When you use this method,
you can use the S oftness spinner in the Effect area.
Pixel—Creates the glow based on the pixel color of
the object. This is the default metho d . It is very
fast.
User —Lets you select a color for the glow effect.
Click the color swatch to display the Color Selector
(page 1–161) and choose a color.
Intensity—Controls the intensity or brightness of
the glow effect. Values range from 0 to 100. This
control is enabled only when Pixel or User is the
chosen color method.
Glow I nferno
Video Post toolbar > Add Image Filter Event > Choo se
Lens Effects Glow from Filter Plug-In list. > Setup >
Inferno tab
The Inferno panel lets you create explosions, fire,
and smoke effects by combining the lens flare glow
with black and white fractal noise.
The Glow inferno effect is like the Inferno effect
in Lens Flare (page 3–360), but it is applied to the
Glow through the R, G, and B color channels.