Hair rendering lighting problem

AdrianS

I have a number of preset iRay lighting packages. Sometimes (it seems when there is some sort of rear light), the hair renders with white blocks at the edge (see attached file). It seems, but I'm not sure, that certain combinations of hair and lights bring out these effects. Any ideas how i can get rid of this? I've tried adjusting the angle and luminence of lights but that seems to have no effect.

Tobor

This is a known artifact. You may need to move the light off-axis even more, or alter the transmap of the hair.