2008

NOTE Image motion blur doesn't work for NURBS objects that are animated so
their tessellation (
surface approximation on page 2469 ) changes over time. This
happens when sub-objects are animated independently of the top-level
NURBS
model
on page 7865 . Nor does image motion blur work on any of the following:
■ Anything with an Optimize.
■ Any primitive with animated segments.
■ MeshSmooth of any type with a "Smoothness" value (under iterations)
other than 1.
■ MeshSmooth on polygons with Keep Faces Convex on.
■ Anything with Displacement Material.
In general, if you have objects with changing topology, use scene or object
motion blur rather than image motion blur.
Apply Turns image motion blur on or off globally for the entire scene. Any
objects that have their Image Motion Blur property set are rendered with
motion blur.
Duration Specifies how long the "virtual shutter" is open. When this is set
to 1.0, the virtual shutter is open for the entire duration between one frame
and the next. The higher the value, the greater the motion blur effect.
Apply to Environment Map When set, image motion blur is applied to the
environment map as well as to the objects in the scene. The effect is noticeable
when the camera orbits.
The environment map should use Environment mapping: Spherical,
Cylindrical, or Shrink-Wrap. The image motion blur effect doesn't work with
Screen-mapped environments.
Transparency When on, image motion blur works correctly with transparent
objects that overlap. Applying image motion blur to transparent objects can
increase rendering time. Default=off.
Auto Reflect/Refract Maps group
Rendering Iterations Sets the number of inter-object reflections in non-flat
automatic reflection maps. Although increasing this value can sometimes
enhance image quality, it also increases rendering time for reflections.
Default Scanline Renderer Rollout | 5961