pop Posted May 28, 2014 Share #41 Â Posted May 28, 2014 Advertisement (gone after registration) Taken literally that means a picture would suffer no significant absolute defocus at anything but macro distances of which RF use has no concern. One-third the depth of the filter is nothing for any subject from 3-foot to infinity. Â Yes, that's what I wanted to imply. Link to post Share on other sites More sharing options...
Advertisement Posted May 28, 2014 Posted May 28, 2014 Hi pop, Take a look here Filters and image quality. I'm sure you'll find what you were looking for!
gisling Posted May 28, 2014 Share #42  Posted May 28, 2014 The photo taken at Thailand with Elmarit R19 with a 82mm UV filter clearly demonstrates the ugly vignetting at the four corners caused by the UV filter Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/190095-filters-and-image-quality/?do=findComment&comment=2599251'>More sharing options...
jaapv Posted May 28, 2014 Share #43 Â Posted May 28, 2014 Yes, but that is geometrical and has noting to do with the filter glass. The filter ring without glass would do exactly the same. A thin mount filter for wideangles should do a lot better. Link to post Share on other sites More sharing options...
lct Posted May 29, 2014 Share #44  Posted May 29, 2014 ... A thin mount filter for wideangles should do a lot better. Yes or filters with cut-outs (pics) if you can find one. Filter glass cannot cause vignetting like that. Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/190095-filters-and-image-quality/?do=findComment&comment=2599282'>More sharing options...
gisling Posted May 29, 2014 Share #45 Â Posted May 29, 2014 Ict, is that cut out filter by DIY ? Link to post Share on other sites More sharing options...
gisling Posted May 29, 2014 Share #46  Posted May 29, 2014 I later found an ultra thin filter, the corner fall out is reduced, but still visible Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/190095-filters-and-image-quality/?do=findComment&comment=2599355'>More sharing options...
gisling Posted May 29, 2014 Share #47 Â Posted May 29, 2014 Advertisement (gone after registration) Ict please upload a picture taken with your Elmarit R19 V1 with cut out filter Link to post Share on other sites More sharing options...
lct Posted May 29, 2014 Share #48 Â Posted May 29, 2014 Sorry i have no R 19 but i see that your pic above has been shot with a 5D2. I've got vignetting with other R wides (28/2.8 v1, 21/4) on the 5D1 as well and this has nothing to do with filters. Just remove yours and you'll still get some vignetting i bet unless your filter is not slim enough. Ever tried your 19 on M240? Just curious. Link to post Share on other sites More sharing options...
Washington Posted June 30, 2014 Share #49 Â Posted June 30, 2014 There is no "focus shift" using a UV filter. But, you do have to spring for a high quality filter. It's like in the coating, man! Link to post Share on other sites More sharing options...
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