turbonetics Posted April 24, 2016 Share #1 Posted April 24, 2016 Advertisement (gone after registration) Hi, I just bought a 50Lux ASPH paired with the SL. I read that this is a very sharp lens from centre to corners. However, after a few hundreds of shots, I noticed that the lens isn't very sharp(it looks bit soft with light details) and the corners seems to be soft. For the corners, I manual focus at a subject placed at corner of frame but photo turns out looking "smudge". Is this how this lens performs? Thank you. Quote Link to post Share on other sites More sharing options...
Advertisement Posted April 24, 2016 Posted April 24, 2016 Hi turbonetics, Take a look here 50mm Leica-M Summilux ASPH. I'm sure you'll find what you were looking for!
FrozenInTime Posted April 24, 2016 Share #2 Posted April 24, 2016 The lens was designed to work well on film. 2 Quote Link to post Share on other sites More sharing options...
indergaard Posted April 24, 2016 Share #3 Posted April 24, 2016 Hi, I just bought a 50Lux ASPH paired with the SL. I read that this is a very sharp lens from centre to corners. However, after a few hundreds of shots, I noticed that the lens isn't very sharp(it looks bit soft with light details) and the corners seems to be soft. For the corners, I manual focus at a subject placed at corner of frame but photo turns out looking "smudge". Is this how this lens performs? Thank you. Are you talking about the extreme corners? The Lux 50 ASPH isn't sharp in the extreme corners on the M9 or M240 either. As the previous poster said, it was designed for film. The Lux 35 ASPH FLE works far better on digital in the extreme corners, for example, but still there is still some slight corner smearing on this lens also. Quote Link to post Share on other sites More sharing options...
lct Posted April 24, 2016 Share #4 Posted April 24, 2016 At what apertures did you get this feeling? On the M240, corners are soft at f/1.4, less so at f/2, sharp at f/2.8 and plenty sharp at f/4 and on. Same on my Sony A7s mod more or less. This lens has more field curvature than the 50/2 apo though. Quote Link to post Share on other sites More sharing options...
turbonetics Posted April 25, 2016 Author Share #5 Posted April 25, 2016 Thanks for the replies. Yes when I shot at F1.4. It seems to be the characteristics. Quote Link to post Share on other sites More sharing options...
indergaard Posted April 25, 2016 Share #6 Posted April 25, 2016 It's a trait of the lens, and partly why a lot of people love to use it for portraits wide open. But the extreme corners aren't sharp at f/5.6 either. Some corner smearing is apparent. Quote Link to post Share on other sites More sharing options...
jaapv Posted April 25, 2016 Share #7 Posted April 25, 2016 Advertisement (gone after registration) That is correct, see the MTF curves. However, However, it is arguably the best performing 1.4 50 mm lens around. For the ultimate corner-to-corner sharpness one must look to the Apo-Summicron, or even the "normal" Summicron. 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! 2 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/259670-50mm-leica-m-summilux-asph/?do=findComment&comment=3032924'>More sharing options...
lct Posted April 25, 2016 Share #8 Posted April 25, 2016 (edited) [...] But the extreme corners aren't sharp at f/5.6 either. Some corner smearing is apparent. Do you mean on the SL? Never got smeared corners at any aperture out of M240 or A7s mod so far. Softness at f/1.4 and f/2 yes but smearing no i must say. My 50/1.4 asph is in great shape though. Edited April 25, 2016 by lct Quote Link to post Share on other sites More sharing options...
lct Posted April 25, 2016 Share #9 Posted April 25, 2016 [...] For the ultimate corner-to-corner sharpness one must look to the Apo-Summicron, or even the "normal" Summicron. Compared to the 50/2 non apo, corners are sharper at f/2 out of my 50/1.4 asph as far as my copies are concerned. Quote Link to post Share on other sites More sharing options...
jaapv Posted April 25, 2016 Share #10 Posted April 25, 2016 Hmmm... That is debatable - as you see the falloff is more gradual, giving a more even result. 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/259670-50mm-leica-m-summilux-asph/?do=findComment&comment=3032985'>More sharing options...
turbonetics Posted April 25, 2016 Author Share #11 Posted April 25, 2016 Centre Test Shot Original Size F1.4 F4 F5.6 Quote Link to post Share on other sites More sharing options...
turbonetics Posted April 25, 2016 Author Share #12 Posted April 25, 2016 Corner Test shots Original Size F1.4 F4 F5.6 Quote Link to post Share on other sites More sharing options...
turbonetics Posted April 25, 2016 Author Share #13 Posted April 25, 2016 The above posts speak what I was trying to put across. Centre shots @ F1.4 does looks soft and corner @ F1.4 looks smudge. All shots taken on tripod at standard Jpeg settings, ISO 160, 12sec timer and focusing distant were all the same. I believe these are the characteristics of the lens? Hopefully I didn't get a lemon set. If you have a sharper copy, pls post your photos here and share, preferably with similar settings. Thanks. Quote Link to post Share on other sites More sharing options...
harmen Posted April 25, 2016 Share #14 Posted April 25, 2016 It looks as if your object is ever so slightly behind the plane of focus. The tassels that extend towards the camera seem sharper. Or is it me? How about taking a shot where your object is angled 45 degrees so you avoid any focus issues? Quote Link to post Share on other sites More sharing options...
turbonetics Posted April 25, 2016 Author Share #15 Posted April 25, 2016 (edited) It looks as if your object is ever so slightly behind the plane of focus. The tassels that extend towards the camera seem sharper. Or is it me? How about taking a shot where your object is angled 45 degrees so you avoid any focus issues? my focus area are at those photos that I cropped. it is no surprised that other parts of the photo looks sharp too, but those are not the concern as we should focus on my area of focus or it will cause more confusion. behind the plane of focus do u mean below the MFD? Edited April 25, 2016 by turbonetics Quote Link to post Share on other sites More sharing options...
lct Posted April 25, 2016 Share #16 Posted April 25, 2016 (edited) Your f/1.4 crop looks out of focus. Easier to do when the focus patch can be moved. I'll do a quick test with my A7s mod to check this out but i would be much surprised to see any corner smearing. Edited April 25, 2016 by lct Quote Link to post Share on other sites More sharing options...
jaapv Posted April 25, 2016 Share #17 Posted April 25, 2016 The 1.4 shots are clearly front-focused. I think the lens should go back to Leica, The floating element should be adjusted. Quote Link to post Share on other sites More sharing options...
lct Posted April 25, 2016 Share #18 Posted April 25, 2016 Crops at f/1.4, f/2, f/2.8, f/4 & f/5.6. 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/259670-50mm-leica-m-summilux-asph/?do=findComment&comment=3033048'>More sharing options...
turbonetics Posted April 25, 2016 Author Share #19 Posted April 25, 2016 (edited) Your f/1.4 crop looks out of focus. Easier to do when the focus path can be moved. I'll do a quick test with my A7s mod to check this out but i would be much surprised to see any corner smearing. I set the focus all at the same and only adjust the shutter speed and aperture. which F1.4 do u mean, Centre or Corner or both? The 1.4 shots are clearly front-focused. I think the lens should go back to Leica, The floating element should be adjusted. The focus area was at the left side "ball knob" not the part that curve in. I was using SL manual focus using the Live view, I think it can't be front focus issue right? Edited April 25, 2016 by turbonetics Quote Link to post Share on other sites More sharing options...
turbonetics Posted April 25, 2016 Author Share #20 Posted April 25, 2016 Crops at f/1.4, f/2, f/2.8, f/4 & f/5.6. DSC01548_c1si_02_web.jpg crop.jpg the F5.6 looks sharp on yours. mine is the 6 Bit, I wonder if it makes any difference? Quote Link to post Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.