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    Re: EBBCO/filters
    From: Michael Daly
    Date: 2007 Nov 21, 23:15 -0500

    Peter Fogg wrote:
    
    > Hmm. My understanding is that a thin sheet of plain old ordinary transparent
    > glass is quite an effective UV filter - and that UV filters made for use in
    > front of camera lenses consist of little (if anything) else!
    
    I don't know that that's a safe assumption.  Plain glass absorbs higher
    energy UV well, but not lower energy.  Given that blue light can do as
    much damage to the retina as low energy UV, I'd only recommend a
    certified, high-absorption  UV filter material.
    
    Mike
    
    
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