Tue, 03 Jan 2006 15:24:36 -0800
Stephen writes: 

>       Bloody camera shops!


Unfortunately, many shops (both local and non-local) 
like selling staff you don't need/want, and would seldom admit
they might not know something..
Same thing in any other area (cars, electronics, ...).

As for the UV pass filter, - I never worked with UV-pass filters,
but I find it interesting, and this article (and links therein)
could be useful:
http://msp.rmit.edu.au/Article_01/06.html

Igor



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