Am 05.10.2011 10:03, schrieb Stan:

>      sphere {
>     <0,0,0>,10000
>     pigment {
>       image_map { hdr "entrance1_color" once interpolate 2 map_type 1 }
>     }
>     finish {  emission 1 }
>     hollow
>     no_image
>     no_reflection
>            no_shadow
>   }

Try reducing the emission; most HDR images are too bright to be used 
with emission 1, and may "drown" any reflections in a sea of pure white.

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