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    <title>topic Re: Recommended UV Filter for EF 24-105mm (77mm) in EF &amp; RF Lenses</title>
    <link>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/94836#M18605</link>
    <description>&lt;BLOCKQUOTE&gt;&lt;HR /&gt;&lt;a href="https://community.usa.canon.com/t5/user/viewprofilepage/user-id/3485"&gt;@ebiggs1&lt;/a&gt; wrote:&lt;BR /&gt;&lt;P&gt;&lt;FONT face="Arial, sans-serif"&gt;&lt;FONT color="#000000"&gt;Some people say that a Protective, or UV, filter reduces the quality of an image. They are referring to an extremely high level of quality that is not required by most people on this planet. If you want to ensure that your image quality does not deteriorate, get a good quality filter and keep it clean. &lt;/FONT&gt;And in that instance where the filter may introduce 'flare' or 'ghosting' simply take it off. &amp;nbsp;How many of you forget, you can remove the filter just like the lens cap! &amp;nbsp;It does not become one with the lens.&lt;/FONT&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;HR /&gt;&lt;/BLOCKQUOTE&gt;&lt;P&gt;I &lt;U&gt;have&lt;/U&gt; seen what I consider very&amp;nbsp;signficiant loss of image quality due to filters... not just minor effects. A lot depends upon the quality of the filter. But any added optics in front of a lens is going to have some effect. Maybe a little. Maybe a lot.&amp;nbsp;It's a range of types of effect: ghost flare, veiling flare, tints, uneven effects, image softening, focus errors, "crazy" bokeh,&amp;nbsp;increased chromatic aberrations and more.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;As a rule, better quality, multi-coated&amp;nbsp;filters under ideal conditions minimize loss with most lenses.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;But some lenses &lt;EM&gt;really&lt;/EM&gt; don't play well with filters (the EF100-400L is an example).&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;And who knows when I'll find myself shooting into the light and&amp;nbsp;seriously&amp;nbsp;challenging my lens to get a good shot.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;I paid good money for high quality optics to make good images... I'm not going to mindlessly compromise every single shot I make with that investment by sticking a filter on it 24/7/365 (even tho I can remove it, if I remember... and have time to do so) &amp;nbsp;in hopes that a thin piece of fragile&amp;nbsp;glass might someday protect my precious&amp;nbsp;from an unknown danger.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;To me that makes a great deal more sense&amp;nbsp;to just leave the filter off the lens and only install it on those rather&amp;nbsp;rare occasions where there actually are some risks to the lens (or when I want the effects of a polarizer... or want the effects of a neutral density filter... or any other type of filter).&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;This way, there's much less chance of forgetting to remove the filter and ruining&amp;nbsp;an image. Or, if I do remember,&amp;nbsp;to&amp;nbsp;find myself still&amp;nbsp;fumbling to remove&amp;nbsp;the filter and stick it safely away in my&amp;nbsp;bag,&amp;nbsp;while a great shot opportunity passes me by.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;IMO&amp;nbsp;a quick and easy to remove&amp;nbsp;clip-on lens cap does a far better job protecting the lens (as well as protecting&amp;nbsp;the filter, if and when one is being used).&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Here are some actual&amp;nbsp;examples of what can happen in an image when a filter is used. I deliberately used a B+W MRC C-Pol on my Tokina&amp;nbsp; AT-X 12-24mm f4 , to see what would happen in a strongly lit situation....&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;First, there were a number of ghost&amp;nbsp;flares occured various places in the image (some&amp;nbsp;do not show up&amp;nbsp;at&amp;nbsp;Internet resolutions, but are obvious at higher magnifications and in greater enlargement such as prints&amp;nbsp;of the image)....&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&lt;IMG align="center" src="https://community.usa.canon.com/t5/image/serverpage/image-id/5062iD1DE46CACA534DA5/image-size/original?v=mpbl-1&amp;amp;px=-1" border="0" alt="Detail 1" title="Detail 1" /&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Both the lens and filter are high quality and resistant to flare, so these ghosts&amp;nbsp;are fairly minimal and rather easily cloned out in Photoshop. Still, it's extra work that could have been avoided.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Worse was slight, general softening of the image that&amp;nbsp;increased chromatic aberrations...&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&lt;IMG align="center" src="https://community.usa.canon.com/t5/image/serverpage/image-id/5064iF4DF0FD46FBF2185/image-size/original?v=mpbl-1&amp;amp;px=-1" border="0" alt="Detail 2" title="Detail 2" /&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;This was stronger toward the edges (above), as might be expected, but occured to some extent throughout the image...&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&lt;IMG align="center" src="https://community.usa.canon.com/t5/image/serverpage/image-id/5066i23AE04C393A5026E/image-size/original?v=mpbl-1&amp;amp;px=-1" border="0" alt="Detail 3" title="Detail 3" /&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;CA is much harder, though still possible to correct to some degree.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;There also was overall veiling flare that required boosting contrast and color saturation to correct. But the quality of&amp;nbsp;the lens and filter was such that there weren't any ugly color tints (which I've seen filters cause in other strong lighting situations, and are a pain to correct when they occur only on part of the image).&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;The end result of the corrected image in a size and resolution for the Internet isn't too bad...&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&lt;IMG align="center" src="https://community.usa.canon.com/t5/image/serverpage/image-id/5068i776A614E04BDF87A/image-size/original?v=mpbl-1&amp;amp;px=-1" border="0" alt="Pigeon Point Sunset" title="Pigeon Point Sunset" /&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;...&amp;nbsp;but it would be hard to make a good print of any significant&amp;nbsp;size from the image.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;It's sooooo much easier to just not use a filter - except when one is really called for - and&amp;nbsp; have minimal "corrective" work needed on the finished image...&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&lt;IMG align="center" src="https://community.usa.canon.com/t5/image/serverpage/image-id/5070iFB19A2AEE752E9FE/image-size/original?v=mpbl-1&amp;amp;px=-1" border="0" alt="Pacific sunset" title="Pacific sunset" /&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Canon EF 20mm f2.8 was used on 5DII for the above, without any filter&amp;nbsp;(shooting very quickly, handheld,&amp;nbsp;because light was fading fast).&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;You also have to watch out for uneven filter effects. The veiling tint mentioned above is one example.&amp;nbsp;Another is the way a C-Pol tends to have variable effect especially on wide lenses and depending upon where the sun is in the sky.&amp;nbsp;For the image below, I deliberately used a C-Pol to darken the sky more behind the lighthouse...&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&lt;IMG align="center" src="https://community.usa.canon.com/t5/image/serverpage/image-id/5072i926D1EB47E4B0F21/image-size/original?v=mpbl-1&amp;amp;px=-1" border="0" alt="Pigeon Point" title="Pigeon Point" /&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Above was, once again, EF 20/2.8 lens on 5D Mark II, with B+W MRC C-Pol. The uneven sky was deliberate here, but might not be in other situations. There's a tiny bit of loss of fine detail due to the filter (even though it's another high quality, multi-coated B+W), but it's minimal here because the camera captures a lot of detail and&amp;nbsp;the sun was well out of the image, off to the left of the camera. In this case, I felt&amp;nbsp;it was worth the slight loss as a trade-off for the positive aspects of the&amp;nbsp;filter's effect. In other cases I've had images I felt were ruined by the uneven effects of a C-Pol.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;In addition to the cap, a lens hood also provides good physical protection for a lens. Especially with telephoto lenses, a nice deep hood will provide really good physical protection while shooting. And since the correct hood properly installed cannot possibly have negative effect on images, it's something I always recommend using... even when it's a little inconvenient (such as when using a filter that needs to be rotated, like a C-Pol).&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;When I first got an EF-S 10-22mm and saw how it's rather large hood was a pain to fit into my camera bag, I thought maybe I could just get by without it. After all, that hood is so shallow and that lens is one of the most flare resistant of all the ultrawides. So to answer my own question, I ran a quick&amp;nbsp;test shooting the same scene with and without the hood (and no filter either)...&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&lt;IMG align="left" src="https://community.usa.canon.com/t5/image/serverpage/image-id/5080iED7E724B0BC15EB2/image-size/original?v=mpbl-1&amp;amp;px=-1" border="0" alt="10-22mm with hood" title="10-22mm with hood" /&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&lt;IMG align="left" src="https://community.usa.canon.com/t5/image/serverpage/image-id/5078i5D26F6557FDB83FE/image-size/original?v=mpbl-1&amp;amp;px=-1" border="0" alt="10-22mm without hood" title="10-22mm without hood" /&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;I think the results of&amp;nbsp;this quick&amp;nbsp;test sort of speak for themselves.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;In the end, I'd&amp;nbsp;simply suggest anyone who wants to do so go ahead and get the filter... But don't simply accept the&amp;nbsp;recommendations from a sales person in a store or &amp;nbsp;faceless individuals like me on Internet forums. Do some&amp;nbsp;with and without comparison&amp;nbsp;tests for yourself, so you know exactly how it's going to effect your images, then can decide whether or not it's worth it,&amp;nbsp;and are prepared to deal with it in different situations. The above lens hood comparison&amp;nbsp;convinced me, yeah,&amp;nbsp;it's worth the extra effort of carrying around the rather large, matched hood for the EF-S 10-22mm. Do&amp;nbsp;your own&amp;nbsp;challenging lighting&amp;nbsp;shots with and without the filter, to see how much work you need to do to correct for the problems the filter causes (if the image is even recoverable). Over three decades of shooting with all sorts of gear have convinced me that filters merely for purpose of&amp;nbsp;"protection" are more often a problem than a solution, don't really&amp;nbsp;reduce the risk&amp;nbsp;very much anyway,&amp;nbsp;and that my lenses are better off "naked" most of the time.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;***********&lt;BR /&gt;Alan Myers&lt;/P&gt;&lt;P&gt;San Jose, Calif., USA&lt;BR /&gt;"Walk softly and carry a big lens."&lt;BR /&gt;&lt;A href="http://photography-on-the.net/forum/showpost.php?p=4185712&amp;amp;postcount=838&amp;quot;]GEAR" target="_blank"&gt;GEAR&lt;/A&gt;: 5DII, 7D(x2), 50D(x3), some other cameras, various lenses &amp;amp; accessories&lt;BR /&gt;&lt;A href="http://www.flickr.com/photos/amfoto1" target="_blank"&gt;FLICKR&lt;/A&gt;&amp;nbsp;&amp;amp; &lt;A href="http://amfoto1.printroom.com/" target="_blank"&gt;PRINTROOM&lt;/A&gt;&amp;nbsp;&lt;BR /&gt;&lt;BR /&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;/P&gt;&lt;P&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;</description>
    <pubDate>Fri, 23 May 2014 16:43:54 GMT</pubDate>
    <dc:creator>amfoto1</dc:creator>
    <dc:date>2014-05-23T16:43:54Z</dc:date>
    <item>
      <title>Recommended UV Filter for EF 24-105mm (77mm)</title>
      <link>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/7813#M18577</link>
      <description>&lt;P&gt;I'm looking at getting a clear UV filter for my lens and am unfamiliar with the top brands that won't degrade the image quality.&amp;nbsp; Any input would be greatly appreciated!&lt;/P&gt;</description>
      <pubDate>Mon, 17 Dec 2012 22:53:31 GMT</pubDate>
      <guid>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/7813#M18577</guid>
      <dc:creator>TexasTea</dc:creator>
      <dc:date>2012-12-17T22:53:31Z</dc:date>
    </item>
    <item>
      <title>Re: Recommended UV Filter for EF 24-105mm (77mm)</title>
      <link>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/7823#M18578</link>
      <description>&lt;P&gt;I purchased a Hoya UV with my lens last month and it works fine as I haven't noticed any image quality so far.&lt;/P&gt;</description>
      <pubDate>Mon, 17 Dec 2012 23:38:14 GMT</pubDate>
      <guid>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/7823#M18578</guid>
      <dc:creator>jimscaf</dc:creator>
      <dc:date>2012-12-17T23:38:14Z</dc:date>
    </item>
    <item>
      <title>Re: Recommended UV Filter for EF 24-105mm (77mm)</title>
      <link>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/7829#M18579</link>
      <description>&lt;P&gt;I use the "B+W" brand filters (with Multi-Reflective Coating (MRC)) on most of my lenses.&lt;/P&gt;</description>
      <pubDate>Tue, 18 Dec 2012 00:37:17 GMT</pubDate>
      <guid>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/7829#M18579</guid>
      <dc:creator>jfo</dc:creator>
      <dc:date>2012-12-18T00:37:17Z</dc:date>
    </item>
    <item>
      <title>Re: Recommended UV Filter for EF 24-105mm (77mm)</title>
      <link>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/7975#M18580</link>
      <description>&lt;P&gt;Don't get an aluminum one.&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Get one made from brass; the threads don't bind up and stick on the lens nearly so bad, and it won't deform nearly so easily.&amp;nbsp; I have a B&amp;amp;W 77mm on my 70-200, and it just feels much better than the aluminum 77mm I have on my 17-55.&lt;/P&gt;</description>
      <pubDate>Tue, 18 Dec 2012 16:31:20 GMT</pubDate>
      <guid>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/7975#M18580</guid>
      <dc:creator>ScottyP</dc:creator>
      <dc:date>2012-12-18T16:31:20Z</dc:date>
    </item>
    <item>
      <title>Re: Recommended UV Filter for EF 24-105mm (77mm)</title>
      <link>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/7977#M18581</link>
      <description>&lt;P&gt;Thank you everyone for the input!&amp;nbsp; Helps out tremendously.&lt;/P&gt;</description>
      <pubDate>Tue, 18 Dec 2012 16:54:03 GMT</pubDate>
      <guid>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/7977#M18581</guid>
      <dc:creator>TexasTea</dc:creator>
      <dc:date>2012-12-18T16:54:03Z</dc:date>
    </item>
    <item>
      <title>Re: Recommended UV Filter for EF 24-105mm (77mm)</title>
      <link>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/8035#M18582</link>
      <description>&lt;P&gt;B+W is by far the best you can get but that comes with a price tage.&lt;/P&gt;&lt;P&gt;Also not all are equal in built.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Hoya is a the best quality for money.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Make sure to use thinner filters for ultra wide lenses. Your widest part of zoom, 24 is still not that wide so any descent filter should be fine.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Avoid unNamed cheap internet filters. Some are very poorly built with uneven surface and thickness.&lt;BR /&gt;What this means is that if you used it with a tele lens, you will magnify all the imperfections built into filter and get a bad distorted image or due to lack of coating, internal reflection happens when a sourse of light is in the field of view and your image will suffer badly from lens flare. I had a Sigma 50-500 and because diameter of filter is so wide, I could not find a decent filter. A cheap one (CPL and UV) bought on ebay made OK job at wide side of zoom but to great surprise, lens could not focus at all at 500mm zoom side, due to total distortion of image.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Afteral you get what you pay for but you don't go wrong with&lt;STRONG&gt; Hoya HMC multi coated UV&lt;/STRONG&gt; that should be about $17 on ebay etc.&lt;/P&gt;</description>
      <pubDate>Wed, 19 Dec 2012 03:05:36 GMT</pubDate>
      <guid>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/8035#M18582</guid>
      <dc:creator>Samsen</dc:creator>
      <dc:date>2012-12-19T03:05:36Z</dc:date>
    </item>
    <item>
      <title>Re: Recommended UV Filter for EF 24-105mm (77mm)</title>
      <link>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/8081#M18583</link>
      <description>&lt;BLOCKQUOTE&gt;&lt;HR /&gt;&lt;a href="https://community.usa.canon.com/t5/user/viewprofilepage/user-id/377"&gt;@Samsen&lt;/a&gt; wrote:&lt;BR /&gt;&lt;BR /&gt;&lt;P&gt;Afteral you get what you pay for but you don't go wrong with&lt;STRONG&gt; Hoya HMC multi coated UV&lt;/STRONG&gt; that should be about $17 on ebay etc.&lt;/P&gt;&lt;HR /&gt;&lt;/BLOCKQUOTE&gt;&lt;P&gt;I would avoid eBay.&amp;nbsp; There are counterfeits out there.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&lt;A target="_blank" href="http://www.ephotozine.com/article/hoya-pro1-digital-fake-filters-found-19275"&gt;http://www.ephotozine.com/article/hoya-pro1-digital-fake-filters-found-19275&lt;/A&gt;&lt;/P&gt;&lt;P&gt;&lt;A target="_blank" href="http://www.amateurphotographer.co.uk/photo-news/538761/photographers-warned-as-bogus-filter-scam-escalates"&gt;http://www.amateurphotographer.co.uk/photo-news/538761/photographers-warned-as-bogus-filter-scam-escalates&lt;/A&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Go with direct sales from a big store (B&amp;amp;H, Adorama, etc, even avoiding Amazon's "sold by ____, fulfilled by Amazon").&lt;/P&gt;</description>
      <pubDate>Wed, 19 Dec 2012 06:21:14 GMT</pubDate>
      <guid>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/8081#M18583</guid>
      <dc:creator>jfo</dc:creator>
      <dc:date>2012-12-19T06:21:14Z</dc:date>
    </item>
    <item>
      <title>Re: Recommended UV Filter for EF 24-105mm (77mm)</title>
      <link>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/8087#M18584</link>
      <description>&lt;P&gt;Yes that hurts to know there are so many counterfeit items out there.&lt;/P&gt;&lt;P&gt;Same goes for very cheap B+W you see out there.&lt;/P&gt;&lt;P&gt;Good link and if everyone who is a victim complain to seller, place of purchase such as ebay/paypal, there will be a level of confidence soon developed but I wonder how easy/difficult is to know if an item is counterfeit.&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;What I don't understand from the sample images without filter /. With real Hoya/ with counterfeit filter, is that why adding filter on both examples added the gathering light capability as when real filter is added, Diaphragm is shown a tad stopped down, when apparent exposure is identical to Without Filter image. You would expect any layer of extra media such as even a thin filter, should either not change the EV or at least reduce it be a small fraction that here has increased?!!&lt;/P&gt;</description>
      <pubDate>Wed, 19 Dec 2012 06:53:17 GMT</pubDate>
      <guid>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/8087#M18584</guid>
      <dc:creator>Samsen</dc:creator>
      <dc:date>2012-12-19T06:53:17Z</dc:date>
    </item>
    <item>
      <title>Re: Recommended UV Filter for EF 24-105mm (77mm)</title>
      <link>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/8133#M18585</link>
      <description>&lt;P&gt;I buy Hoya filters only, Multicoated. A website called lenstip.com did an exhaustive tests of majority uv filters and Hoya filters came up on top and they don't cost as much as b+w filters. I did not notice any degradation of picture quality using them and they come easily on and off. Just make sure you buy a brand name filters since you spent so much money on your lens, don't cheap out on filters. Many cheap filters claim they are multicoated, but they're not.&lt;/P&gt;</description>
      <pubDate>Wed, 19 Dec 2012 17:50:06 GMT</pubDate>
      <guid>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/8133#M18585</guid>
      <dc:creator>XYNOBIS</dc:creator>
      <dc:date>2012-12-19T17:50:06Z</dc:date>
    </item>
    <item>
      <title>Re: Recommended UV Filter for EF 24-105mm (77mm)</title>
      <link>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/91894#M18586</link>
      <description>&lt;P&gt;What do peopel think of the Canon ef Filters?&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Just purchased the 100-400 usm lens.&lt;/P&gt;&lt;P&gt;Want to add a UV filter.&lt;/P&gt;&lt;P&gt;Know about Hoya and B&amp;amp;W, but why not a Canon filter for a Canon lens?&lt;/P&gt;</description>
      <pubDate>Thu, 08 May 2014 23:00:46 GMT</pubDate>
      <guid>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/91894#M18586</guid>
      <dc:creator>thorn</dc:creator>
      <dc:date>2014-05-08T23:00:46Z</dc:date>
    </item>
    <item>
      <title>Re: Recommended UV Filter for EF 24-105mm (77mm)</title>
      <link>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/91988#M18587</link>
      <description>&lt;P&gt;&lt;STRONG&gt;Digital camera do not need UV filters.&lt;/STRONG&gt;&lt;/P&gt;&lt;P&gt;Polarizing, yes can be beneficial.&lt;/P&gt;</description>
      <pubDate>Fri, 09 May 2014 11:34:59 GMT</pubDate>
      <guid>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/91988#M18587</guid>
      <dc:creator>Vetteran</dc:creator>
      <dc:date>2014-05-09T11:34:59Z</dc:date>
    </item>
    <item>
      <title>Re: Recommended UV Filter for EF 24-105mm (77mm)</title>
      <link>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/92070#M18588</link>
      <description>&lt;P&gt;&lt;EM&gt;"What do peopel think of the Canon ef Filters?"&lt;/EM&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN&gt;&amp;nbsp;&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN&gt;Someone asked this and, IMHO, I use the UV or more correct Protective Filter made by the manufacturer of the lens. &amp;nbsp;I.E., a Canon filter on a Canon lens, a Sigma filter on a Siggy and so forth. &amp;nbsp;I started this routine in the 60's and I have yet to have someone say, "That's a great photo if only you hadn't used a UV filter."&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN&gt;I only buy mine from B&amp;amp;H or Adorama. &amp;nbsp;You can get complete junk if you aren't careful.&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN&gt;&amp;nbsp;&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN&gt;Some say they aren't needed or required and maybe they are right. But...............think.&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN&gt;You spend a $1000 bucks upward and then don't think a $70 dollar filter that may help protect your front lens isn't a good idea? &amp;nbsp;What planet are you on? &amp;nbsp;Most seem to forget, filters are removable and if you think you need to, you can remove it!&amp;nbsp;&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN&gt;But if nothing else they keep you from unnecessary cleaning of the delicate front element. &amp;nbsp;Well worth the extra cost.&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN&gt;Again, IMHO, as always.&lt;/SPAN&gt;&lt;/P&gt;</description>
      <pubDate>Fri, 09 May 2014 14:05:02 GMT</pubDate>
      <guid>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/92070#M18588</guid>
      <dc:creator>ebiggs1</dc:creator>
      <dc:date>2014-05-09T14:05:02Z</dc:date>
    </item>
    <item>
      <title>Re: Recommended UV Filter for EF 24-105mm (77mm)</title>
      <link>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/92082#M18589</link>
      <description>&lt;P&gt;Take a bit more care.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;UV filters worked for film.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Any filter introduces two more air-to-glass surfaces.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Started photographing in the '50s.&lt;/P&gt;</description>
      <pubDate>Fri, 09 May 2014 14:34:00 GMT</pubDate>
      <guid>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/92082#M18589</guid>
      <dc:creator>Vetteran</dc:creator>
      <dc:date>2014-05-09T14:34:00Z</dc:date>
    </item>
    <item>
      <title>Re: Recommended UV Filter for EF 24-105mm (77mm)</title>
      <link>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/92094#M18590</link>
      <description>&lt;P&gt;&lt;EM&gt;"Started photographing in the '50s."&lt;/EM&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN&gt;&amp;nbsp;&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN&gt;We must be about the same age! &amp;nbsp;&lt;img id="smileyhappy" class="emoticon emoticon-smileyhappy" src="https://community.usa.canon.com/i/smilies/16x16_smiley-happy.png" alt="Smiley Happy" title="Smiley Happy" /&gt; I started in 1955 with an Argus C3. &amp;nbsp;I wound up with three of them and still have them.&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN&gt;We'll just have to leave the choice of 'to filter' or 'not to filter' to our own preference.&lt;/SPAN&gt;&lt;/P&gt;</description>
      <pubDate>Fri, 09 May 2014 15:08:49 GMT</pubDate>
      <guid>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/92094#M18590</guid>
      <dc:creator>ebiggs1</dc:creator>
      <dc:date>2014-05-09T15:08:49Z</dc:date>
    </item>
    <item>
      <title>Re: Recommended UV Filter for EF 24-105mm (77mm)</title>
      <link>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/92100#M18591</link>
      <description>&lt;P&gt;I purchased a Canon 77mm EF filter, but have not taken it out of the box.&lt;/P&gt;&lt;P&gt;I want&amp;nbsp; to make sure that I'm getting / using an excellent filter.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;The Canon filter was not cheap - $80 - so spending a bit more is not an issue.&lt;/P&gt;&lt;P&gt;I'm wondering why no manufacturer filters are reviewed. Same with Nikon, Sigma, etc..&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;I can't even find techinal specs on the canon filter - multicoated?, brass?&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Thanks for the feedback.&lt;/P&gt;</description>
      <pubDate>Fri, 09 May 2014 15:16:15 GMT</pubDate>
      <guid>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/92100#M18591</guid>
      <dc:creator>thorn</dc:creator>
      <dc:date>2014-05-09T15:16:15Z</dc:date>
    </item>
    <item>
      <title>Re: Recommended UV Filter for EF 24-105mm (77mm)</title>
      <link>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/92104#M18592</link>
      <description>&lt;P&gt;Keep a polarizing filter on if you must have a filter but UV is NOT needed for digital cameras.&lt;/P&gt;&lt;P&gt;A polarizer may be of benefit for some snaps&lt;/P&gt;</description>
      <pubDate>Fri, 09 May 2014 16:03:12 GMT</pubDate>
      <guid>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/92104#M18592</guid>
      <dc:creator>Vetteran</dc:creator>
      <dc:date>2014-05-09T16:03:12Z</dc:date>
    </item>
    <item>
      <title>Re: Recommended UV Filter for EF 24-105mm (77mm)</title>
      <link>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/92142#M18593</link>
      <description>&lt;P&gt;&lt;U&gt;"I can't even find techinal specs on the canon filter ..."&lt;/U&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN&gt;&amp;nbsp;&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN&gt;Don't worry about it. &amp;nbsp;Would Canon spend millions of dollars on lens development and than put crap glass in there filters. &amp;nbsp;No they would not and neither would Nikon or Sigma.&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN&gt;The above 'ole boy' does have a point, sorta. &amp;nbsp;Software like Photoshop, &lt;EM&gt;not digital&lt;/EM&gt;, has largely made filters of any type a thing of the past.&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN&gt;The single filter that does remain useful are ND (netural density). &amp;nbsp;Sometimes you can't stop down enough, right?&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN&gt;&amp;nbsp;&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;Another thing that the anti-filter crowd fails to take notice of, is how are the final photos going to be used? &amp;nbsp;Anything that is meant for a web site, a filter is impossibile to tell if it was used or not. &amp;nbsp;Any thing you intend to print at Walmart as 4x6's, it is simply not going to be a factor. &amp;nbsp;Viewing on most monitor screens, not going to be able to tell.&lt;/P&gt;&lt;P&gt;Even, in fine art print it is going to be nearly impossibile to tell if that UV filter was on the lens or not&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;UV filters have no effect on digital. &amp;nbsp;That is true.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&lt;SPAN&gt;However, the filter you bought may save your lens some day. &amp;nbsp;Maybe not, but cheap insurance at any rate. &amp;nbsp;But probably the best benefit from a filter is &lt;STRONG&gt;not cleaning&lt;/STRONG&gt; the front element of your lens. &amp;nbsp;Clean the filter instead!&lt;/SPAN&gt;&lt;/P&gt;</description>
      <pubDate>Fri, 09 May 2014 20:18:46 GMT</pubDate>
      <guid>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/92142#M18593</guid>
      <dc:creator>ebiggs1</dc:creator>
      <dc:date>2014-05-09T20:18:46Z</dc:date>
    </item>
    <item>
      <title>Re: Recommended UV Filter for EF 24-105mm (77mm)</title>
      <link>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/92390#M18594</link>
      <description>Thank you ebiggs1. I'm along with your thoughts on the matter.&lt;BR /&gt;It is cheap peace of mind.&lt;BR /&gt;Still not sure about the Canon filter though.&lt;BR /&gt;Also thinking about a clear protection filter, instead of uv.&lt;BR /&gt;Thanks again.</description>
      <pubDate>Sun, 11 May 2014 02:02:18 GMT</pubDate>
      <guid>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/92390#M18594</guid>
      <dc:creator>thorn</dc:creator>
      <dc:date>2014-05-11T02:02:18Z</dc:date>
    </item>
    <item>
      <title>Re: Recommended UV Filter for EF 24-105mm (77mm)</title>
      <link>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/92500#M18595</link>
      <description>&lt;P&gt;&lt;EM&gt;"Also thinking about a clear protection filter, instead of uv."&lt;/EM&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN&gt;&amp;nbsp;&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN&gt;It really is a moot point. &amp;nbsp;A UV filter has no effect on a digital sensor. &amp;nbsp;Film is sensitive to the UV rays and the UV filter helped in this area. &amp;nbsp;A digital camera&lt;U&gt;&lt;STRONG&gt; is not as sensitive&lt;/STRONG&gt;&lt;/U&gt; to them.&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN&gt;Also, bear in mind, you can remove the filter if you have an unlikely situation where it might be a issue. &amp;nbsp;Most, if not all, of the anti-filter crowd, seem to forget the filter does come off. &amp;nbsp;It does not become one with the lens when you first screw it on.&amp;nbsp;&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN&gt;Sometimes a little common sense needs to be used.&lt;/SPAN&gt;&lt;/P&gt;</description>
      <pubDate>Sun, 11 May 2014 16:37:48 GMT</pubDate>
      <guid>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/92500#M18595</guid>
      <dc:creator>ebiggs1</dc:creator>
      <dc:date>2014-05-11T16:37:48Z</dc:date>
    </item>
    <item>
      <title>Re: Recommended UV Filter for EF 24-105mm (77mm)</title>
      <link>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/92576#M18596</link>
      <description>&lt;P&gt;As ebiggs points out... your camera has a built-in UV (and IR) filter already. &amp;nbsp;These weren't so necessary with film because the sensitivity of film was entirely dependent on the type of film. &amp;nbsp;But digital sensors are sensitive to light beyond what a human eye can see. &amp;nbsp;To avoid allowing this light to skew the look of the final image, the camera has a filter which ramps up it's blocking as the light approaches either the UV or IR end of the spectrum (and yes, it actually blocks a lot of visible light ... that's on purpose. &amp;nbsp;Human eyes are far more sensitive to greens than we are to blues or reds. &amp;nbsp;The filters and sensors are designed to attempt to capture, as closely as possible, what a human eye would be able to see.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;This means addinga UV filter to the front of your lens is a bit redundant and mostly thought of as a form of lens protection.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Be careful here... as the filter itself can also be a source of added reflections and flare. &amp;nbsp;High end (expensive) filters tend to have good coatings to "reduce" (you can't really completely eliminate the issue) the problem. &amp;nbsp;So if you're going to use a filter, keep this in mind.. you may want to test the camera in various situations with and without the filter to get a feel for how it alters the image. &amp;nbsp; I do "own" filters for my lenses... but I do not necessarily leave them on the lenses. &amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;A lens hood also offers a form of protection in that if you were going to bump into something with the business-end of your lens, it would hit the hood and not the glass.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;B+W brand have a reputation for being top-notch thread-on filters. &amp;nbsp;Hoya actually makes quite a range of filters... it's their Hoya "Pro1" series which are their high end filters -- and they do have a very good repuation with those filters.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;</description>
      <pubDate>Sun, 11 May 2014 22:19:20 GMT</pubDate>
      <guid>https://community.usa.canon.com/t5/EF-RF-Lenses/Recommended-UV-Filter-for-EF-24-105mm-77mm/m-p/92576#M18596</guid>
      <dc:creator>TCampbell</dc:creator>
      <dc:date>2014-05-11T22:19:20Z</dc:date>
    </item>
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