Originally posted by BennyK should I change it through the render settings or through the mental ray globals? Sorry about the bum arm Benny. And as far as I know they are the essentially the same thing, if you open both windows and tweak a setting in either one it will update the other. On your sky dome you could try using a surface shader and slap your texture in the out color slot, be warned it will contribute to lighting (if and when you turn on FG) unless you uncheck "Final Gather Cast" under your sky dome's Shape tab in the MR section, might as well uncheck "Final Gather Recieve" also.