the one on the left looks o.k., anyway. but ya could also use a sky photo. ISTR bill said one can use one dome with clouds only, the other with solid colour. then, the way I understand it, the skydome(s) should have "cast shadows" unchecked. personally i would keep it simple, and just use one skydome. p.s. I found out that, when illuminating a scene with only an IBL, if an object with a reflection channel has reflection_lite_mult checked, this prevents said object from reflecting anything. but if reflection_lite_mult is unchecked, then the object reflects everything normally. however, if it's a spotlite or infinite lite (and no IBL), then the object will reflect everything whether or not reflection_lite_mult is checked.