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1386 Chapter 15: Lights and Cameras
Multi-Pass Motion B lur Parameters
for Cameras
Create panel > Cameras > Target button or Free button
>Parametersrollout>Multi-PassEffectgroup>Choose
Motion Blur effect. > Motion Blur Parameters rollout
Above: Motion blur app lied to wings of the flying dragon
Below: Multiple passes appear in successive refreshes of the
rendered frame window.
Cameras can generate motion blur effects. Motion
blur is a multi-pass effect (page 3–77).Youturn
it on in the Parameters rollout (page 2–1373) for
cameras. Motion blur simulates the motion blur of
a camera by offsetting rendering p asses based on
movement in the scene.
You can preview motion blur in viewports.
Previewing multi-pass motion blur in a wireframe and a
shaded viewport
Impor tant: This effec t is for the default scanline
renderer. The mental ray renderer (page 3–78) has its own
depth-of-field effect. See Motion Blur with the mental ray
Renderer (page 3–89).
Tip:
To reduce the visible effect of multiple camera
passes, try setting the antialiasing fi lter to Blend,
withaWidthvalueintherange4.0to5.0,and
a Blend value in the neighborhood of 0.1. (You
choose the antialiasing filter and adjust its settings
on the Default Scanline Renderer rollout (page
3–38).) Also, try reducing the Dither Streng th
value,intheeffect’sPassBlendinggroup,tothe
neighborhood of 0.2.
Interfa ce
Note: The multi-pass mot ion blur parameters are
animatable.
Sampling group
Display Pas ses—When on, the rendered frame
w i ndow displays the multiple rendering passes.
When off, the frame window displays only the final
result. Thiscontrolhasnoeffectonpreviewing
motion blur in c a mera viewports. Default=on.