8

Highlight Preferences 391
Alt. Rays turned on and set to 40%
Vary group
The Vary group of controls adds randomness to
your Highlight effects. You can quickly adjust your
effectssothatnotwolookalike.Inmanyinstances,
you want to avoid hav ing your Highlights rotate in
formation, and the Size and Angle buttons control
that.
Size—Var ies the overa l l size of the individual
Highlights.
Angle—Varies the initial orientation of the
indiv idual Highlights.
Reseed—Forces Highlig ht to use a different
random number to generate parts of its effects.
Rotate group
These two buttons let you have your h ighlights
automatically rotate based on their relat ive
position in the scene.
Distance—Automatically rotates the individual
high light elements as they recede into the distance.
The faster your elements recede, the faster they
will rotate.
Pan —Automatically rotates the individual
Highlight elements as they move laterally across
thescreen. Ifyouhaveobjectsinyourscene
that are passing by the camera, they can be
automatically rotated based on their position. The
faster your elements move across the screen, the
faster they wi ll rotate.
Highl ight Pr efer ences
Video Post toolbar > Add Imag e Filter Event > Choose
Lens Effects Highlight from Filter Plug-In list > Setup >
Preferences tab
The Preferences panel defines the size and number
of points on the highlight, occlusion settings, and
whether or not it affects the Z-Buffer or alpha
channels.
Interfa ce
Scene group
Affect Alpha—Determines whether or not the
highlight settings affect the alpha channel of the
image when you render to a 32-bit file f ormat.
Affect Z B uffer—Determines whether or not the
highlight affects the Z-Buffer of the image. When
this option is selected, the linear distance of the
highlight is recorded, and can be used in special
effects that make use of the Z-Buffer . For example,
the Focus module that ships with Lens Effects
blurs objects based on their Z-Buffer information.