> Hi,
>
> I have a hard time getting a brighter result. What I've achieved so far:
> http://blackbox.diitstudio.com/download/result.png
>
> I use radiosity without conventional lights, and use sky_sphere:
> sky_sphere {pigment {color rgb <3.16, 3.56, 4>}}
>
> I don't want (direct) sunlight and want to leave the radiosity parameter
> brightness at 1 if possible.
>
> For most objects I use a "flat" finish:
> finish {diffuse 0.6 phong 0}
>
> Is the dark image a result of not using a light source? Or am I forgetting to
> set something in the finish/texture?
> Even adding an ambient value of 0.5 to the finish doesn't make it any brighter.
>
> Any help is appreciated.
>
>
> Regards,
> Dick
>
>
>

Why use a sky_sphere for a plain, uniform colour. Beter to use 
background{ rgb <3.16, 3.56, 4>*Intensity } in this case.

When using the current version (3.7) and radiosity, ambient is set to 
zero everywhere. If you want luminous surfaces, use emission. This will 
make the texture actualy emit light. An emissive texture should have a 
lower diffuse than normal.

You can make your background even brighter by multiplying it's colour by 
some value.

recursion_limit default to 2. You may want to increase it to 3 or 4, or 
even 5. Going above 5 will usualy have negligeable effect.

You may increase the diffuse value somewhat. Try 0.8 to 0.9. You should 
not use diffuse 1 if you want to get realistic results.



Alain

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