"Travels or passes. (which is one of the two words always used in the definitin of refraction)"

The correct terminology would be "passes". My typo. But it still remains that everything absorbs light to some degree in real life, even metal. If that has an affect on your renders is mere speculation, because as mentioned, there's no physics calculations taking place in Bryce anyway. Even if there were, the difference in the way light affected the scene based on IOR values on non-transparent objects would be negligible if there were no photometric calculations taking place, I would think. Message edited on: 09/01/2004 02:08

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