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"Andrew Coppin" <orp### [at] btinternet com> wrote in message
news:3dd56a62@news.povray.org...
>
> As I understand it, anything with a non-zero ambient setting will in
effect
> "glow".
Well, diffuse value is key now in POV-Ray 3.5. Was ambient before.
> Also, the images are very patchy. Now, when I just dunked an empty
> radiosity{} block into my scene, I wasn't suprised that the defaults
didn't
> magically work perfectly. But... I've been fiddling with the settings for
> ages, and it's still blotchey.
Your error_bound needs to be lowered to something like 0.1 probably; higher
values can look okay sometimes and go faster but blotches can appear
readily, I think. The recursion_limit 5 might might be overdoing it, not
sure. I tend to keep to less than that, but for speed. And I also usually
use a lesser nearest_count, but these things either depend on the conditions
of the scene or personal preference.
> Oh, and about that pretrace step... It seems to interact with the normal
> mosaic preview INI setting... Is this correct? Does changing the INI
> settings affect the final image, or only the preview process?
If I remember right, the mosaic preview is only a visual thing and the
pretrace does the refining or sampling control.
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