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UV filters.. how do they work?

Mikepoison

Amsterdam, NL
255 posts

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Mikepoison Basic Member
Thu 13-Jul-00 08:45 AM

I'm sort of curios. I had physics, so I get the basics, but what I do NOT get is the following:

hold up your UV filter to a TL tube. it looks like a TL tube. now look at the -reflection- of the TL tube in your filter. it (should be) very green =)

So my thought would be "the UV filter doesn't reflect UV and visible shades of violet" but why does it do that, and why does it seemingly allow the UV to pass through the glass anyway?

I'm stumped. (or possibly missing something here)

Mike


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