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Ockham's Razor
Guest
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 Posted: Sat Apr 28, 2007 12:35 am Post subject: Polarizing Filter |
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Can this just be scr**ed on in front of a UV filter that I use to
protect the lens or do I have to remove the UV filter first?
TIA
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"When fascism comes to America, it will be wrapped in the flag and
carrying a cross."
Sinclair Lewis |
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jeremy
Guest
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| Posted: Sat Apr 28, 2007 12:35 am Post subject: Re: Polarizing Filter |
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"Ockham's Razor" <Mencken@pdx.net> wrote in message
news:Mencken-5EFE20.16384727042007@news.dsl...
| Quote: | Can this just be scr**ed on in front of a UV filter that I use to
protect the lens or do I have to remove the UV filter first?
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The polarizer will absorb UV, and if your lens is multi-coated it probably
does not pass UV anyway. So there is no need to add a UV on top of a
polarizer.
With most modern lenses--30 years old and younger--the primary benefit of
the UV filter is for protection from dust, dirt, smudges and possibly
impact. If you leave your polarizer on your lens, it will do the same job.
BUT: polarizers require about 2 extra stops of light, so why would you use
one unless you needed it to darken skies or to minimize reflections? I use
a UV to protect my lens, and I take it off when I mount a polarizer. But
I'd never just leave a polarizer on the lens all the time. |
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Paul Burdett
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| Posted: Sat Apr 28, 2007 12:35 am Post subject: Re: Polarizing Filter |
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Yes. There could be some minor loss of picture quality though. I prefer to
keep the added glass to a minimum.
"Ockham's Razor" <Mencken@pdx.net> wrote in message
news:Mencken-5EFE20.16384727042007@news.dsl...
| Quote: | Can this just be scr**ed on in front of a UV filter that I use to
protect the lens or do I have to remove the UV filter first?
TIA
--
"When fascism comes to America, it will be wrapped in the flag and
carrying a cross."
Sinclair Lewis |
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Jim
Guest
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| Posted: Sat Apr 28, 2007 12:35 am Post subject: Re: Polarizing Filter |
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"Ockham's Razor" <Mencken@pdx.net> wrote in message
news:Mencken-5EFE20.16384727042007@news.dsl...
| Quote: | Can this just be scr**ed on in front of a UV filter that I use to
protect the lens or do I have to remove the UV filter first?
TIA
--
"When fascism comes to America, it will be wrapped in the flag and
carrying a cross."
Sinclair Lewis
No, there is no need for a UV filter before or behind a polarizer. You can |
leave it in place, but by so doing you are running the risk of image
degradation. My theory is the less glass there is in front of the lens the
better.
Jim |
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