"Ian Crofoot" <nomail@nomail> wrote in message 
news:web.439d5320bf36aed9265c44900@news.povray.org...
> [url]http://img.photobucket.com/albums/v505/imcmonkey/problem.jpg[/url]
>
> I turned down the ambience and brilliance to illustrate the problem here.
>
> If it's not readily apparent, the light is only lighting part of a smooth,
> even, surface.  You can see at the back of the desk it goes really crazy.
> There's nothing obstructing the light's path, either.  It is above the
> center of the desk a little over a foot high.  You can tell this by 
> looking
> at the shadows.
>
> I'm using very basic light source and texture here, so I don't know what 
> the
> problem is.
>
> light_source {
>  <52.5, -6.2, -20>
>  rgb <1,.97,.9>
>
> }
> #declare wood_WingsMat =
>  texture{
>      pigment{ rgbf <0.726940, 0.646726, 0.436164, 0.00000e+0>}
>      finish{
>        ambient 0
>        diffuse 1
>        brilliance 0
>        specular 0.500000 roughness .05
>        }
> }
>
> Can anybody help a poor, lost soul?
>
>

Another thought is whether you have tried isolating the offending surface, 
removing everything else except the light and camera. If it looks OK in 
isolation you could gradually add the other elements back into the scene 
until the problem reappears.

Regards,
Chris B.

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