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02-11-2012, 11:13 PM   #1
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Should I Use UV Filter?

Do you guys use UV filter as a protection for your lenses? Will that degrade IQ? Or do without?

02-11-2012, 11:30 PM   #2
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I use Hoya filters on my irreplaceable lenses just to protect the glass. Others go without them

Cheap filters will degrade IQ, but if you have a good one, you won't even notice it's there.

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02-11-2012, 11:36 PM   #3
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02-12-2012, 12:34 AM   #4
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UV filters are very useful for protecting your lenses from the elements (especially if these include salt spray and sand). Assuming you avoid the cheapest filters (which won't have optical quality glass and will therefore degrade your images), the main consideration for DSLR use is flare resistance: they must be multicoated.

Adam mentioned Hoya filters, and they feature very well in this comparative test:

UV filters test - Introduction - Lenstip.com

I don't think you'll go far wrong with a Hoya HMC filter, though the Marumi filters have quite a following, too. (So do B+W, but they're expensive.) I personally would avoid all other third-party brands.

02-12-2012, 12:47 AM   #5
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For lens protection I recently got a clear glass filter (for my FA 31, not irreplaceable but currently my most expensive (and best)lens) from B+W. Is there a reason to use an UV filter for protection instead of clear glass?
02-12-2012, 01:18 AM   #6
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A UV filter may be useful for blocking UV on a digital camera if you're at extreme elevation -- like, over 4500m / 15000ft. I've shot with digital at 14000ft without a filter and not seen any UV effects. UV filters are necessary with film cameras, but digital sensors just don't see UV. IR is just the opposite -- only IR film sees IR, but digital sensors DO see it, so virtually all digital cameras have built-in IR hot.filters.

On digital cameras NOT at extreme elevation, a UV filter mainly protects the finances of whomever sold it to you. A UV filter can be a cheap substitute for clear optical glass if you NEED to protect the lens objective from harsh conditions: spraying salt, sand, dust, or spurting blood, mud, beer, etc. If you aren't in such conditions, a lens hood provides more physical protection, without cutting image quality.
02-12-2012, 03:25 AM   #7
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Thanks guys! I have a hoya UV filer on the lens, that is reassuring!
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