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Old 23rd Feb 2014, 08:55
  #25 (permalink)  
mad_jock
 
Join Date: May 2001
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if the light can get through the uv can as well.
You can get selective filters which only block certain wave lengths.

I have a lovely Hoya UV HD filter on the front of my camera lens blocks 100% UV-B and 100% UV A and everything above 400nm.

And its opaque to everything below that allowing photo's to be taken.
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