LeicaGuyUK Posted April 12 Share #1  Posted April 12 (edited) Advertisement (gone after registration) Hi, Hope you guys can advise  Been having this since I got my M11 (regular version)... At my tether with it really, have tried all sorts to see if it makes a difference and always the same result. Basically even if i expose correctly, under expose or over expose i get these purple patches appear in the top corners or the whole of the top of the frame... Not too sure what to do next, i`ll be honest i`m seriously considering selling the M11 and going to another model... Any ideas, help etc or if you guys need more info let me know. I have attached a SOOC example, the same one but with the dehaze set to full just to emphasise the patchy purple bits and one of the histogram showing the shot exposure.. The sun light was behind me at the time so I think i have eliminated flare just to be sure as i initially thought it was part of the issue. Thanks in advance  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! Edited April 12 by LeicaGuyUK Quote 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/420442-m11-patchy-skys/?do=findComment&comment=5785617'>More sharing options...
Advertisement Posted April 12 Posted April 12 Hi LeicaGuyUK, Take a look here M11 - Patchy Sky`s. I'm sure you'll find what you were looking for!
jaapv Posted April 12 Share #2  Posted April 12 JPG or raw? 8 bits or 16? What lens? Is this a crop? Quote Link to post Share on other sites More sharing options...
LeicaGuyUK Posted April 12 Author Share #3 Â Posted April 12 RAW, 16bit, Any lens i`ve found, this particular image was shot on a 35 Summilux. Nope full image SOOC and as mentioned one with the dehaze applied just for demonstration of the issue. Â 1 Quote Link to post Share on other sites More sharing options...
don daniel Posted April 12 Share #4 Â Posted April 12 Seems to be the completely normal magenta cast of the M11's white balance. 2 Quote Link to post Share on other sites More sharing options...
LeicaGuyUK Posted April 12 Author Share #5  Posted April 12 (edited) 8 minutes ago, don daniel said: Seems to be the completely normal magenta cast of the M11's white balance. Yeah i figured it might be that but then i get patchy ones like the below (the sun is far left way out of shot)... The cast issue, I would expect that to be across most of the frame not just the corners each time? Here`s an example of that with the dehaze up to demonstrate:  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! Edited April 12 by LeicaGuyUK 1 Quote 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/420442-m11-patchy-skys/?do=findComment&comment=5785637'>More sharing options...
don daniel Posted April 12 Share #6 Â Posted April 12 Which tint value does lightroom show in the DNG-file? I think, you have pulled dehaze so strong, that saturation in the corners becomes more visible, also because of the vignetting of the lens. Quote Link to post Share on other sites More sharing options...
LeicaGuyUK Posted April 12 Author Share #7  Posted April 12 Advertisement (gone after registration) 9 minutes ago, don daniel said: Which tint value does lightroom show in the DNG-file? I think, you have pulled dehaze so strong, that saturation in the corners becomes more visible, also because of the vignetting of the lens. +18 but i usually reduce to +10, i shoot now at fixed WB of 5500 as that`s so far given me the most consistency and less magenta across the frame... For this example i pulled the dehaze just to show it, it`s more about how patchy it is, even with a slight dehaze having these purple blotches just looks horrible. When people talk about the magenta cast on the M11 i assumed it was across the frame not just in blobs  This was shot at f/8, theirs almost no vignetting on the glass... Quote Link to post Share on other sites More sharing options...
don daniel Posted April 12 Share #8 Â Posted April 12 And what does it look like if you push the tint slider to +10 and leave the dehaze slider untouched? Quote Link to post Share on other sites More sharing options...
LeicaGuyUK Posted April 12 Author Share #9  Posted April 12 2 minutes ago, don daniel said: And what does it look like if you push the tint slider to +10 and leave the dehaze slider untouched? Heres the image (reset) and applied +10 tint and 0 Dehaze... Also another with tint +10 and dehaze 30 (which in this image i would want), the top right is just nasty looking  Thing is it`s not every image, same shoot, same settings, pretty much the same exposure and it`s perfect... Would love to figure out the difference...  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! Quote 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/420442-m11-patchy-skys/?do=findComment&comment=5785655'>More sharing options...
don daniel Posted April 12 Share #10 Â Posted April 12 (edited) Okay, then tell us which color profile you are using. I would not use M11 profile but Adobe color. I would NOT increase the dehaze slider and I would pull down temperature a litte to about 5100K. Your picture seems too warm to me. Edited April 12 by don daniel Quote Link to post Share on other sites More sharing options...
LeicaGuyUK Posted April 12 Author Share #11  Posted April 12 1 minute ago, don daniel said: Okay, then tell us which color profile you are using. I would not use M11 profile but Adobe color. I would NOT increase the dehaze slider and I would pull down temperature a litte to about 5100K. Your picture seems too warm to me. Profile I usually use Adobe-Standard as for me it`s a good starting point... This is un-edited, its no where near what I would do with it usually, this is just to highlight the patches / blobs of purple. that appear randomly on different frames (and not always).. If i fully edit an image you can see the corners are off. I have had a few Leica M`s and other brands of cameras over the years but never seen anything like this and so randomly... Quote Link to post Share on other sites More sharing options...
LeicaGuyUK Posted April 12 Author Share #12  Posted April 12 Here`s an example that although it has the magenta cast it`s even across the frame, not patchy... Same body, lens, 5500k WB fixed, pretty much the same setup... It is odd (to me anyhow)  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! Quote 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/420442-m11-patchy-skys/?do=findComment&comment=5785662'>More sharing options...
jaapv Posted April 13 Share #13  Posted April 13 Magenta vignetting is quite normal when using an M wideangle. It should be mostly corrected by the camera software if the lens is recognised, but I am not surprised that it sometimes becomes apparent on the M11 which tends to magenta anyway. 2 Quote Link to post Share on other sites More sharing options...
LeicaGuyUK Posted April 13 Author Share #14  Posted April 13 8 hours ago, jaapv said: Magenta vignetting is quite normal when using an M wideangle. It should be mostly corrected by the camera software if the lens is recognised, but I am not surprised that it sometimes becomes apparent on the M11 which tends to magenta anyway. Absolutely  I guess my question really was why it’s seems so random… I’ll dig my 50 summicron out and see if I get the same results on that… I do love the M system, the M11 has so many positives over previous versions but if I’m taking it out for a day Id expect some consistency Quote Link to post Share on other sites More sharing options...
Smogg Posted April 13 Share #15 Â Posted April 13 The M11 is to some extent a Lomo camera or a camera with expired film. Either you have to send the camera to Germany for six months to correct the color immediately after purchase, or you have to accept it (as I did) and spend more time on post-processing. Either way, you won't find a better rangefinder due to the lack of competition. I'm sure that the M12 will take into account the mistakes and correct them. 2 Quote Link to post Share on other sites More sharing options...
jaapv Posted April 13 Share #16  Posted April 13 17 minutes ago, LeicaGuyUK said: Absolutely  I guess my question really was why it’s seems so random… I’ll dig my 50 summicron out and see if I get the same results on that… I do love the M system, the M11 has so many positives over previous versions but if I’m taking it out for a day Id expect some consistency Random? Variation in IR content of the light, different apertures, variations in exposure surely will make this unpredictable. Quote Link to post Share on other sites More sharing options...
pgk Posted April 13 Share #17  Posted April 13 31 minutes ago, LeicaGuyUK said: Absolutely  I guess my question really was why it’s seems so random… I’ll dig my 50 summicron out and see if I get the same results on that… I do love the M system, the M11 has so many positives over previous versions but if I’m taking it out for a day Id expect some consistency Have you checked your lens for marginal decentering? Wide open, detail image check that it perfoms identically right acroos the frame in terms of detail visible as a quick test. 1 Quote Link to post Share on other sites More sharing options...
LeicaGuyUK Posted April 13 Author Share #18  Posted April 13 1 minute ago, jaapv said: Random? Variation in IR content of the light, different apertures, variations in exposure surely will make this unpredictable. Fairly yes, many of the shots I took yesterday were same settings, within moments of each other yet not all had this happen so I figure it’s pretty random. If theirs any tips in regards to IR, what to avoid etc then that would be great. Ideally I’d like to keep it, or if anything landscape is to be avoided then I’ll just use it for street, I’ve had some brilliant results from that so far Quote Link to post Share on other sites More sharing options...
LeicaGuyUK Posted April 13 Author Share #19  Posted April 13 3 minutes ago, pgk said: Have you checked your lens for marginal decentering? Wide open, detail image check that it perfoms identically right acroos the frame in terms of detail visible as a quick test. I shall add that to my list of check thanks  what’s the best procedure for that? I have a mate with a M10R so I’ll get him to take a few shots also just to rule that lens out… Quote Link to post Share on other sites More sharing options...
jaapv Posted April 13 Share #20 Â Posted April 13 B+W 486 1 Quote Link to post Share on other sites More sharing options...
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