Because a soft body includes
a particle object, special circumstances arise when you render the
soft bodies with motion blur. See the Rendering guide
for more information on rendering.
To
render soft bodies with motion blur
In
the Attribute Editor for the soft
body geometry, turn on Motion Blur in the Render
Stats.
In
the Render Settings window turn
on Motion Blur.
Do
one of the following:
Set
the Blur by Frame in the Render
Settings window to 1.
Select Solvers
> Create Particle Disk Cache to create a particle
disk cache before rendering (see
Use particle disk caching).