Hello,

I must have gone insane or this is a bug I found. Here's the scene:

camera { location <0,1,-1> look_at <0,1,0> angle 30 orthographic }

sphere { 0,1 texture { pigment {color rgb 1} finish {ambient 1} }  }

sphere { <0,1.2,0>,0.18 texture { pigment {color rgb <1,0,0>} finish
{ambient 1} }  }

sphere { <1.2,0,0>,0.18 texture { pigment {color rgb <0,1,0>} finish
{ambient 1} }  }
sphere { <-1.2,0,0>,0.18 texture { pigment {color rgb <0,0,1>} finish
{ambient 1} }  }
sphere { <0,-1.2,0>,0.18 texture { pigment {color rgb <1,1,1>} finish
{ambient 1} }  }

My findings:
If I comment out the orthographic keyword, the scene renders OK.
When using an orthographic camera, AND the last three spheres commented out,
the scene renders OK.
With the complete source above, the scene returns a black image. POV-Ray
reports that there were no ray/shape intersections at all.

Sorry if this one is known.

Celeron 300, Win2k SP2, Beta6

Cheers,

Gergely

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