nelly Posted September 29, 2011 Share #1 Posted September 29, 2011 Advertisement (gone after registration) I am hoping to get some advice from other forum members on how to deal with extreme fringing. I have heard faster lenses shot wide open are more prone to this and digital sensors can have an impact. However I had no noticable problems with my 28mm Summicron but with my 35mm Summilux FLE I have had a lot of fringing and it is not easy to remove. I see magenta/purple fringing on higher contrast elements in photos especially where areas are backlit and overexposed I had tried corrections in CS5 using the CA tool in Camera raw to defringe 'all edges' and also in Photoshop by reducing magenta in 'hue and saturation' but where it is very pronounced I am having trouble getting rid of it. I have never used Lightroom I would be interested to see your correction process and advice on extreme fringing. I have included 2 crops from a photo of mine just to give an example of the issue One of the crops has been converted to B&W just to show the effects are still visible and I am still left with a hard accent line from the fringing. Just a note the focus was on the child's face and shot wide open in the shade against a bright sky. Any help is greatly appreciated. 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/162998-severe-purple-fringing-using-summilux-35mm-14-and-m9/?do=findComment&comment=1805332'>More sharing options...
Advertisement Posted September 29, 2011 Posted September 29, 2011 Hi nelly, Take a look here Severe Purple Fringing using Summilux 35mm 1.4 and M9. I'm sure you'll find what you were looking for!
hoppyman Posted September 29, 2011 Share #2 Posted September 29, 2011 I'm not confident that you correct that in processing from the particular shot you have shown but I shall be interested to read what people have to say. As you have mentioned there, this effect is associated with high contrast edges and (often severe) overexposure of background especially with wide apertures. In addition areas out of the sharpest focus may make it more prominent. Not unique to this lens design. On the couple of samples where it was present that I have shot, it was visible around specular (completely clipped) out of focus highlights (at the edges with the 21 Summilux ASPH on M8 actually). For comparison here is the same lens model stopped down (f/11) and moderate overexposure (~1 stop or so) of the sky behind fine detail. Sample cropped from top edge of frame. Note that the many fine edges are in best focus plane or nearly so. I would add that watching exposure and focus and stopping down if appropriate can help a great deaL. 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/162998-severe-purple-fringing-using-summilux-35mm-14-and-m9/?do=findComment&comment=1805426'>More sharing options...
nelly Posted September 29, 2011 Author Share #3 Posted September 29, 2011 I sent both a jpg and raw file to a photographer friend of mine and he took a look at it. "I couldn't clear up the problem in Camera Raw so I simply worked in PS. I revised the jpeg file you first sent, using a hue/saturation level. I clicked on "blues", then used the left dropper to sample the purple. I adjusted the saturation down to about 70, and raised the lightness slider to blend it better. The out of focus areas make the blending a bit harder. I then added more of the blue with the dropper that has the plus sign. I then added a layer mask and painted back in the new corrections only on the hand (I could have left it global if needed). It was a quick fix of five minutes. I will say that I've never seen fringing worse than this. But the shot appears to be sharp" I would still like to hear from other photographers shooting fast lenses and if they encounter this fringing issue and more importantly how they deal with it. It would be great if you could list detailed steps as I know many of us would find it immensely helpful. Link to post Share on other sites More sharing options...
microview Posted September 29, 2011 Share #4 Posted September 29, 2011 When this lens was announced, I tried the one at Leica Mayfair and was surprised at the amount of fringing. I had with me a v4 35 Summicron and matching shots were superior in that respect. I must admit that they said their lens was a prototype but the fringing was enough to put me off it! As another poster on your other thread noted, fringing with the Zeiss (f2.8) is virtually absent as indeed it is with a new 50 Summilux I recently managed to obtain. It's a shame........ Link to post Share on other sites More sharing options...
nelly Posted September 29, 2011 Author Share #5 Posted September 29, 2011 Interesting to hear that fringing is not an issue with the new 50mm Summilux, I would have thought it would be similar, as I have heard the Noctilux 0.95 has been reported as having fringing issues also. I thought it was all the newer faster lenses. I wonder if only certain serial numbers of the 35mm Summilux are problematic or whether it is inherent to the design. Link to post Share on other sites More sharing options...
hoppyman Posted September 29, 2011 Share #6 Posted September 29, 2011 As you can see from the sample that I provided, this lens is perfectly capable of 'fringe free' performance. It would be a mistake to conclude that this particular design is more prone than any other. In fact its reduced focus shift, high level of correction and flare resistance contribute to superb performance. You can only meaningfully directly compare lenses at identical settings and subject of course. My point is that this one wide open is certainly not inferior in any way to any other f/1.4 35 or wider. There are still not that many in circulation naturally so perhaps other people that have one in use will contribute? I haven't duplicated those specific conditions (especially with wides at large apertures and clipped bright area behind) in practical use but I just have not seen any instance of this in 14 months of using this lens. interior people shot with intentional overexposure of wall behind For her personal project on young women's self images photo - Geoff Hopkinson photos at pbase.com skyline with no overexposure of sky behind Afternoon light on an iconic local view photo - Geoff Hopkinson photos at pbase.com stitched panorama with expoverexposure to portion of sky Surfers day Pano photo - Geoff Hopkinson photos at pbase.com Here is a test setup (100% crop) aperture is f/1.4, distance one metre, subject slightly defocused (for that blurred edge effect) Background is evenly lit white surface. The difference is that the background is NOT badly overexposed or clipped. 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! When this lens was announced, I tried the one at Leica Mayfair and was surprised at the amount of fringing. I had with me a v4 35 Summicron and matching shots were superior in that respect. I must admit that they said their lens was a prototype but the fringing was enough to put me off it! As another poster on your other thread noted, fringing with the Zeiss (f2.8) is virtually absent as indeed it is with a new 50 Summilux I recently managed to obtain. It's a shame........ 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/162998-severe-purple-fringing-using-summilux-35mm-14-and-m9/?do=findComment&comment=1806031'>More sharing options...
jaapv Posted September 29, 2011 Share #7 Posted September 29, 2011 Advertisement (gone after registration) If you get fringing it is normally quite easy to get rid of. Either in raw conversion, by using the correction brush to desaturate the magenta locally or in Photoshop using the color replacement brush. There are more methods around and all work. However, the best way is to avoid it, as Geoff has shown- which is done by not having structures against totally blown out backgrounds. Get control of your highlight exposure and you will have control of your purple fringes. Link to post Share on other sites More sharing options...
algrove Posted November 1, 2011 Share #8 Posted November 1, 2011 I have shot around 1000 images on my M9 with a new 35 1.4 FLE. No purple fringing issues from 1.4 on up. Link to post Share on other sites More sharing options...
MartinNCE Posted November 4, 2011 Share #9 Posted November 4, 2011 I have shot around 1000 images on my M9 with a new 35 1.4 FLE. No purple fringing issues from 1.4 on up. Hamburg Rothenbaum, the very first shots after buying the 35 Summilux at Meister Camera. I must say I was really shocked. I start having big doubts on this lens. How can one avoid this type of situation? Always use F8? I bought this lens to use it at open apertures. And I cannot correct one million leaves in PS. It's a nightmare. 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/162998-severe-purple-fringing-using-summilux-35mm-14-and-m9/?do=findComment&comment=1834768'>More sharing options...
kanzlr Posted November 4, 2011 Share #10 Posted November 4, 2011 Honestly, such an amount of fringing is to be expected from a fast lens. Also, having such hard black/white edges gives PF with mostly any lens/camera combination and is likely as much the fault of the sensor as well as the lens. Link to post Share on other sites More sharing options...
kdriceman Posted November 4, 2011 Share #11 Posted November 4, 2011 Almost any fast lens, wide open shooting against such strong contrast is going to purple fringe on the contrast edges. I know some on this forum say they have ways to fix this, but I am not able to easily fix it when I have such extensive purple fringe. So, those images, if I like them, become black and white. Link to post Share on other sites More sharing options...
MartinNCE Posted November 6, 2011 Share #12 Posted November 6, 2011 Almost any fast lens, wide open shooting against such strong contrast is going to purple fringe on the contrast edges. I know some on this forum say they have ways to fix this, but I am not able to easily fix it when I have such extensive purple fringe. So, those images, if I like them, become black and white. Thanks for your feedback. At least you gave me the impression that this is not a defect of the lens. And thanks for the tip to convert to BW, indeed probably the easiest fix. However with my Summicron 35mm I never had any type of PF. Seems this one stop makes a difference, in good and bad. Having been in Prag for some days I enjoyed the good sides of it, with almost no PF 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/162998-severe-purple-fringing-using-summilux-35mm-14-and-m9/?do=findComment&comment=1836199'>More sharing options...
elmars Posted November 6, 2011 Share #13 Posted November 6, 2011 My Summicron 35 has purple fringing like all my lenses. I think it is mainly caused by overexposure (high contrat). Elmar http://www.elmarstreyl.de Link to post Share on other sites More sharing options...
jaapv Posted November 9, 2011 Share #14 Posted November 9, 2011 Almost any fast lens, wide open shooting against such strong contrast is going to purple fringe on the contrast edges. I know some on this forum say they have ways to fix this, but I am not able to easily fix it when I have such extensive purple fringe. So, those images, if I like them, become black and white.Color replacement brush....(and Capture One raw conversion) Link to post Share on other sites More sharing options...
JeTexas Posted November 17, 2011 Share #15 Posted November 17, 2011 I get the same purple fringing on near objects and green fringing on far objects when subjects are backlit with both my VC Nokton 50mm f1.1 and VC Ultron 28mm f2 when shooting wide open. 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! I can usually fix it with a hue/saturation layer mask and the eyedropper tool in Photoshop, but the above photo was a throwaway. Half his chin looked grey after I corrected it. Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! I can usually fix it with a hue/saturation layer mask and the eyedropper tool in Photoshop, but the above photo was a throwaway. Half his chin looked grey after I corrected it. ' data-webShareUrl='https://www.l-camera-forum.com/topic/162998-severe-purple-fringing-using-summilux-35mm-14-and-m9/?do=findComment&comment=1846888'>More sharing options...
kanzlr Posted November 18, 2011 Share #16 Posted November 18, 2011 do a B&W conversion Link to post Share on other sites More sharing options...
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