On 04/02/2023 11:09 PM, Bald Eagle wrote:
> 
> Nice!
> 
> Try it with radiosity and using the background image as an hdr light source:
> 
> global_settings {
>   assumed_gamma 1
>   #if (Radiosity)
>    radiosity {
>     pretrace_start 0.04
>     pretrace_end 0.01
>     count 200
>     recursion_limit 3
>     nearest_count 10
>     error_bound 0.5
>    }
>   #end
> }
> 
> 
> 
> #declare Environment =
> sphere {
>   0, 1
>   hollow on
>   material {
>    texture { uv_mapping
>     pigment {
>      image_map {
>       hdr "FILENAME.hdr"
>       gamma 1.5
>       map_type 0
>       interpolate 2
>       once
>      }
>     }
>    finish {emission 1}
>    }
>   interior { ior 1.0 }
>   }
>   no_shadow
> }
> 
> object { Environment scale 1000} // might have to adjust  ;)
> 



Thanks for that. I am getting a patchy illumination, when I animate it 
there is inconsistency between frames. Any thoughts?

The only change I made was to reduce the Environment gamma to 1, the 
scene was over-illuminated at 1.5.

m@

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