Thanks Matt. I used a phong material in the end (would have gone with the dielectric one but mental ray causes some problems at rendering my subdivisions... from what i figure, it's because they're not composed just of quads and/or because i have creased edges... i could be wrong though). Anyway the reflections and refractions turned out pretty ok this way too.
Last edited by cris007; 27-11-2005 at 09:33 PM.