What happens if you translate the cone upwards by about half the width of
that ring there? Do you still get the speckles then?

If you'd like to share the source of your speckles cone scene I'd be happy
to play with it to try and see what is doing it (or better, to stop it!)

I would also like to see what happens when increasing the resolution of your
render to include only the cone at about/above 1200x1600 or so... what do
the speckles look like then? Maybe it can give some clue as to what is
happening. I have a reasonably fast dual-core PC, so again, I'd be happy to
try this for you on either POV 3.6/3.7 or MegaPOV 1.21 -- which, by the way,
are you using?


Cheers
-- sooperFoX


"NetDave" <new### [at] netdavecom> wrote:
> Thanks for the suggestion sooperFoX, but I'm not using area_light at all.
> Here's my light_source:
>
> light_source
> {
>   <500,350,-100>
>   color Light_Color
>   spotlight
>   radius 1
>   falloff 2.5
>   tightness 10
>   point_at <0, 0, 15>
>   photons
>   {
>     reflection on
>     refraction on
>   }
> }
>
> The wierd thing is this ONLY happens when I use a cone object. Nothing else
> causes it. FWIW, I've attached the final result of my tinkering. Some of the
> old-timers may recognize this from some previous experiments with photons. I
> just resurrected it in order to generate a 1920x1200 version for my new
> monitor desktop.

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