BB, you saved my day, thanks for that.

I just used 90% transparency + refract node (IOR 2) only, as fresnel is not that relevant for addressing the raytrace bounce limit against a stack of glass panes at quite a straight angle (and because fresnel is just a recent addition to Poser).

For whatever reason I never tested the refract node combined with 0 transparency, entirely my mistake. So it's either transparency (for lace etc) or transparency + reflection (thin glass, architectural glass) or no transparency + refraction / fresnel.

It also explains why I didn't get the amount of bending I actually expected from 4 panes with that high IOR. I'll re-test my previous findings against that.

thanks again, I'll be back...

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Usually I'm wrong. But to be effective and efficient, I don't need to be correct or accurate.

visit www.aRtBeeWeb.nl (works) or Missing Manuals (tutorials & reviews) - both need an update though