13 Jun
2009
13 Jun
'09
10:06 p.m.
Bob Bradlee wrote:
On Fri, 12 Jun 2009 13:41:40 -0700, Eric Smith wrote:
That's kind of a problem, as regular glass absorbs most of the UV.
If you WANT the UV, you need a quartz bulb.
Warren
A regular camera flash is probably the wrong
thing to use, as by design
they don't emit a large amount of short-wave UV.
usually the UV filter is in the lens / cover not the cheep glass tube.