TipScattering may be
improved by adjusting the Ray Depth Limit in
the Attribute Editor for the LightShape
node. Try a Ray Depth Limit value of 2. For
more information, see
Shadow attributes.
Limitations
Currently, scattering is not supported
for instances or shading groups.
Scattering is not supported across non-continuous
surfaces, like adjacent NURBS surfaces. Each surface can have scattering,
but they are considered distinct.