November 22, 2014, 09:19:36 PM

Author Topic: Can a UV filter affect IQ (sharpness) on a lens?  (Read 15985 times)

NormanBates

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Re: Can a UV filter affect IQ (sharpness) on a lens?
« Reply #60 on: November 06, 2012, 03:28:44 AM »
I needed a filter ring with no glass for a DIY project, so I bought a $3 UV filter from ebay and cracked the glass. Before doing so, just out of curiosity, I tested it against my "one dollar resolution chart".

These are the 100% crops from the Canon 500D that I had at the time:

no filter:


with $3 UV filter:


if you stack a bunch of these you'll start seeing some effect (http://www.lensrentals.com/blog/2011/06/good-times-with-bad-filters), but for just one filter... you're pretty safe, even if it's a shitty $3 filter from ebay


edit: other filters will definitely have an effect on sharpness; for example, cheap resin NDs, or fader NDs: http://www.similaar.com/foto/lenstests/lenstestsn.html
« Last Edit: November 06, 2012, 03:30:57 AM by NormanBates »

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Re: Can a UV filter affect IQ (sharpness) on a lens?
« Reply #60 on: November 06, 2012, 03:28:44 AM »