Your bottle does look very good.  I looked a trying to imitate glass some
time ago and wasn't ever very happy with how mine turned out until I
realized that the models I was looking at weren't 'perfect'.  So I used
spatch and modeled a bottle and then threw in a little noise to make it look
a little interesting.  It still needs work, but attached is where I left
off.

Rob
"William Pokorny" <pokorny_epix_net> wrote in message
news:web.410a56e9308ef1f01837413b0@news.povray.org...
>
> Looks good. Check your adc_bailout setting. I vaguely remember some
comment
> about adc_bailout not working properly with release 3.5 so you might want
> to try POV-Ray 3.6.
>
> I think what is happening with an object like this is that you can end up
> with rays which bounce around inside the object especially in the planes
> intersecting the light source(s) and camera locations. For most images I
> think you can get away with much lower settings for the max_trace_level
> even when glass is involved. I usually set max_trace_level a count or two
> above the number of surfaces through which rays must pass in a scene. For
> your bottle I would try a setting of 6 and only increase it if the image
> color looks wrong or if black patches appear.
>
> >
> > I used a lathe object (cubic_spline) for the bottle.  It actually has a
> > hollow interior, and the glass actually has thickness.  I don't know if
> > that's the approach that most people take.  Anyway, even with
> > max_trace_level set to 256 (the max), POV still reports that it traced
> > 256/256.  Is there something I did wrong, or is that just the way it
works?
> > For this image, it was set to 50.
> > --
> > Jeremy
> > www.beantoad.com
>
>
>

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