@LatexLuv: to my understanding, IBL images render with gamma=1 whatever you set them. Same as they don't render specularity, whatever you do.

But the issue as reported by Seachnasaigh really seems a nasty bug to me.

In the meantime: up till now the Refract node was broken, bending the incoming and outgoing light in the same direction twice (instead of opposite directions when going in and out the object). Is that fixed?

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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