Bangrossi Posted September 30, 2021 Share #1 Posted September 30, 2021 (edited) Advertisement (gone after registration) After reading many reviews on the internet, many reviewers are concluded that 50 lux asph are tack sharp on the centre of frame even wide open (f/1.4). So, I pulled the triger to buy used 50 lux asph (11891). After testing the lens on my M10, the lens perform very well from f/2.8 to f/8. But I'm a bit dissapointed wide open performance (f/1.4), I feel the lens a bit hazy and lack of resolution wide open at the centre of the frame. I tought it was RF focusing issue of my camera, but same thing happen even when I focus with magnified live view and using diffrent body (M240 and adapted to eos r). I wonder, is it just a bad copy or I just expecting too much from the lens? I don't have any other 50 lux to compare with mine, but here are the sample photos that I took with the lens. I never expect good edge and corner performance wide open from this lens, I know because this is the nature of the lens. All pictures straight out of camera (M10) without any post processing. The only thing that I did is resize to web size and 100% center crop. All photos are taken at f/1.4 at various distances, (except the dog photo taken at f/1.7) . What do you guys think? does it perform within spesification or not? Thanks 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 September 30, 2021 by Bangrossi uploaded additional photo 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/324975-question-regarding-summilux-m-50mm-asph-wide-open-performance/?do=findComment&comment=4283905'>More sharing options...
Advertisement Posted September 30, 2021 Posted September 30, 2021 Hi Bangrossi, Take a look here Question regarding Summilux-M 50mm ASPH wide open performance. I'm sure you'll find what you were looking for!
gotium Posted September 30, 2021 Share #2 Posted September 30, 2021 Something definitely wrong there. 5 1 Quote Link to post Share on other sites More sharing options...
lct Posted September 30, 2021 Share #3 Posted September 30, 2021 3 hours ago, Bangrossi said: What do you guys think? does it perform within spesification or not? Definitely not if you did not use a filter. 1 Quote Link to post Share on other sites More sharing options...
Gobert Posted September 30, 2021 Share #4 Posted September 30, 2021 How much did you crop? 1 Quote Link to post Share on other sites More sharing options...
Al Brown Posted September 30, 2021 Share #5 Posted September 30, 2021 Apart from the dog's face being out of focus the performance obviously is not what it should be from a 50 lux ASPH 11891 wide open in the centre. Return the lens. 1 Quote Link to post Share on other sites More sharing options...
evikne Posted September 30, 2021 Share #6 Posted September 30, 2021 (edited) I think at least the last two pictures are back focused. The dog's leash is more in focus than his face, and the gravel behind the leaf is more in focus than right next to it. Edited September 30, 2021 by evikne 3 1 Quote Link to post Share on other sites More sharing options...
Bangrossi Posted September 30, 2021 Author Share #7 Posted September 30, 2021 Advertisement (gone after registration) 2 hours ago, Gobert said: How much did you crop? It is 100% crop 1080x720 pixels Quote Link to post Share on other sites More sharing options...
Bangrossi Posted September 30, 2021 Author Share #8 Posted September 30, 2021 2 hours ago, Al Brown said: Apart from the dog's face being out of focus the performance obviously is not what it should be from a 50 lux ASPH 11891 wide open in the centre. Return the lens. Thank you for reply. I will try to discuss it with the seller. Hopefully there will be a solution for this. Luckily the lens that I bought was from one of reputable leica dealer in my town. Quote Link to post Share on other sites More sharing options...
pippy Posted September 30, 2021 Share #9 Posted September 30, 2021 (edited) 2 hours ago, evikne said: I think at least the last two pictures are back focused... I agree. If you have time before you contact the dealer do some tests to double-check the back-focussing suggestion and, if they are conclusive, take the images in to illustrate the situation. Good luck and keep us posted. Philip. Edited September 30, 2021 by pippy Quote Link to post Share on other sites More sharing options...
pgk Posted September 30, 2021 Share #10 Posted September 30, 2021 The images you posted aren't even up to the non-aspheric's wide open performance. Something is wrong I'm afraid. My copy is absolutely spot on with fine detail resolved centrally wide open and corner performance not substantially worse. Quote Link to post Share on other sites More sharing options...
frame-it Posted September 30, 2021 Share #11 Posted September 30, 2021 (edited) SL + 50mm summilux-M ASPH F1.4 at various distances 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 September 30, 2021 by frame-it 3 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/324975-question-regarding-summilux-m-50mm-asph-wide-open-performance/?do=findComment&comment=4283998'>More sharing options...
frame-it Posted September 30, 2021 Share #12 Posted September 30, 2021 F1.4 at various distances 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! 3 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/324975-question-regarding-summilux-m-50mm-asph-wide-open-performance/?do=findComment&comment=4283999'>More sharing options...
frame-it Posted September 30, 2021 Share #13 Posted September 30, 2021 F1.4 at various distances 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! 3 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/324975-question-regarding-summilux-m-50mm-asph-wide-open-performance/?do=findComment&comment=4284000'>More sharing options...
lct Posted September 30, 2021 Share #14 Posted September 30, 2021 1 hour ago, pgk said: The images you posted aren't even up to the non-aspheric's wide open performance +1. The glow around the white bands of the telegraph pole could have been made by a Summarit 50/1.5 perhaps but not the 50/1.4 asph IMHO. 2 Quote Link to post Share on other sites More sharing options...
Harpomatic Posted September 30, 2021 Share #15 Posted September 30, 2021 Not a normal performance. Return it! 1 Quote Link to post Share on other sites More sharing options...
jaeger Posted September 30, 2021 Share #16 Posted September 30, 2021 I will test this lens on a different body to confirm whether it was the lens or the body. 1 Quote Link to post Share on other sites More sharing options...
84bravo Posted September 30, 2021 Share #17 Posted September 30, 2021 Something is not right. Sorry if this sounds simple, but have you checked that the rear element is clean? 2 Quote Link to post Share on other sites More sharing options...
wizard Posted September 30, 2021 Share #18 Posted September 30, 2021 vor 5 Stunden schrieb lct: The glow around the white bands of the telegraph pole could have been made by a Summarit 50/1.5 perhaps but not the 50/1.4 asph I fully agree. That is very atypical for a 50/1.4 asph. I fear that this is a problem that goes beyond mere back or front focusing. 2 Quote Link to post Share on other sites More sharing options...
Bangrossi Posted October 1, 2021 Author Share #19 Posted October 1, 2021 (edited) 9 hours ago, 84bravo said: Something is not right. Sorry if this sounds simple, but have you checked that the rear element is clean? All clean 👍 no haze, no fungus, coating all pristine condition. Physicaly, the lens itself doesn't looks like has been heavily used. Or maybe CLA gonna fix the issue? 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 October 1, 2021 by Bangrossi Grammar and spell corrections 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/324975-question-regarding-summilux-m-50mm-asph-wide-open-performance/?do=findComment&comment=4284433'>More sharing options...
Bangrossi Posted October 1, 2021 Author Share #20 Posted October 1, 2021 15 hours ago, frame-it said: SL + 50mm summilux-M ASPH F1.4 at various distances 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! Thanks for sharing your pictures. I never get this kind of sharpness wide open from this lens. That is beautiful photograph and beautiful lens for sure. This is what I call tack sharp 1 Quote Link to post Share on other sites More sharing options...
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