Thanks, BB!  :laugh:  When you get that book together, sign me up for a copy!

So this isn't "frez-nel", but "freh-nel".  Sort of like Euler isn't "you-ler", but "oil-er".

Is it unusual for a 3D rendering engine not to have any kind of built-in option for handling something like the fresnel effect?

Just tinkering around, I notice that the source of the slowness of the shader is the raytrace node which is plugged into alt_diffuse.  Is there any way to fake the desired effect for greater speed?  Substituting a sphere map node with a reflection map doesn't seem to help.

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Cage can be an opinionated jerk who posts without thinking.  He apologizes for this.  He's honestly not trying to be a turkeyhead.

Cage had some freebies, compatible with Poser 11 and below.  His Python scripts were saved at archive.org, along with the rest of the Morphography site, where they were hosted.