9

Rendering Preferences 827
Output Dithering group
Sets output dithering (page 3–930) for all file types.
True Co lor—Turns dithering on or off for any true
coloroutputdevice.For24-bitwork,youshould
turnTrueColoron.Forpalettedwork,youcan
turn it off.
Paletted—Turns dithering on or off for any 8-bit
paletted device.
Field Order group
Odd/E ven—Selects the field order of rendered
images when the Render to Fields option is
turned on in the render dialog. Some video
devices require that the even field be first, other
video devices require that the odd field be first.
Determine the correct field order for your video
device. Ifthevideooutputofyourdeviceis
strobing or appears jittery, it may be due to
incorrect field (page 3–938) order, try changing
this par ameter and re-rendering your animation.
Super Black group
Threshold—Keeps the super black (page 3–1018)
threshold above a certain level primarily for
luminance keying.
HotSpot/Falloff group
Angle Separation—Locks the spotlight hotspot
(page 3–954) and falloff (page 3–954) cones at the
angle separ ation defined by the spinner (degrees).
This option constrains the hotspot angle so that it
can’t equal the falloff and cause aliasing art ifacts.
Background group
Don’t Antialias Against B ack ground—Ensures
that the edges of rendered geometry a ren’t
antialiased against the background. The inside
of the geometr y is still antialiased. Keep this
control off unless you’re creating sprites for game
development, or require special compositing
techniques because the background will not be
rendered. In these cases, turn ing on this option
helps avoid generating alpha antialiasing on the
outlines of the geometry. Default=off.
Note: You must be rendering against a black
background if Don’t Antialias Against Background
is turned on.
Filter B ackground—Cont rols w hether or not a
backg round image is affected by the Renderer’s
antialiasing Filter. See Plate Match /MAX R2.5/VIZ
R2 Filter Types in Default Scanline Renderer
Rollout (page 3–38) for detailed information of
filtering background and antialiasing.
Use E nvi ro nment A lp ha —Controlswhetherornot
the renderer uses the env ironment map’s a lpha
channel in created the alpha for the rendered
image. If Use Environment A lpha is turned off,
the background is completely tra nsparent. If it
is turned on, the alpha of the resulting image is
a combination of the scene and image’s alpha.
Note that only background images with alpha
channels or black backgrounds are supported
when compositing in other programs such as
Photoshop.
DefaultAmbientLightColorgroup
Click t he color swatch to change the default
ambient light (page 3–908) color for renderings.
Thiscolorwillbethedarkestcolorforrendered
shadows in the scene.
Output File Sequencing group
Nth S er ial Number ing—Specifies whether output
frame files generated using a frame-step value
other than 1 are numbered sequentially (on) or
according to their true frame numbers (off).
Render Termination Alert group
Beep—Beeps when the rendering has finished. You
can set the frequency and the durat ion.