> As the tubes are transparent, using emiting media should be considered, but this
will also increase
> rendering time.
Emitting media is surprisingly fast. In the image below (of neon tubes)
http://news.povray.org/povray.binaries.images/thread/%3Cweb.42d71153a5704711500142a10%40news.povray.org%3E/?ttop=217682
&toff=100
I used an emitting media with a density map to get some variability in the
light. I also used some scene lighting to get a bit of a hazy glow in the
atmosphere around the lights.
I seem to remember it only took a few minutes, but sadly I lost the file
when my computer was replaced.
Joanne
http://www.onewhiteraven.com

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