After further testing, something's funky with the raybias setting on the lens.

 

Here's the basic version of the lens, basic viki has VSS shaders applied.  RB = .4

WARK!

Thus Spoketh Winterclaw: a blog about a Winterclaw who speaks from time to time.

 

(using Poser Pro 2014 SR3, on 64 bit Win 7, poser units are inches.)