Michael Hiles Posted October 21, 2019 Share #21 Posted October 21, 2019 Advertisement (gone after registration) Based on these examples, I could not choose. I cannot see any appreciable difference. 1 Link to post Share on other sites More sharing options...
Advertisement Posted October 21, 2019 Posted October 21, 2019 Hi Michael Hiles, Take a look here Fifties from the fifties vs those from the modern day. I'm sure you'll find what you were looking for!
Ecar Posted October 21, 2019 Share #22 Posted October 21, 2019 7 hours ago, sinjun said: Having recently had a 50mm summarit f/1.5 and collapsible summicron serviced, with elements recoated, I thought I'd do a quick comparison with a Zeiss sonnar-C and summilux ASPH. I'm not normally one for testing but I set up a target and used a tripod-mounted Sony A7s, Kolari thin filter modified. I did this rather than using my trusty M9 so I could be certain I was getting the focus correct - using zoomed-in EVF. Interesting set. I think you'd see even more differences in a more challenging light - a strongly backlit scene, for example. Out of curiosity, where did you get your lenses re-coated? Link to post Share on other sites More sharing options...
M11 for me Posted October 21, 2019 Share #23 Posted October 21, 2019 vor 5 Stunden schrieb Michael Hiles: Based on these examples, I could not choose. I cannot see any appreciable difference. Look at the background. 2 Link to post Share on other sites More sharing options...
AndreasG Posted October 21, 2019 Share #24 Posted October 21, 2019 Good comparison, very well done! How did you focus - nose, eyes, ear? The crops show visible differences of the bear's face between the lenses which might be caused by focussing and not only by lens performance? 1 Link to post Share on other sites More sharing options...
sinjun Posted October 21, 2019 Author Share #25 Posted October 21, 2019 6 hours ago, Ecar said: Interesting set. I think you'd see even more differences in a more challenging light - a strongly backlit scene, for example. Out of curiosity, where did you get your lenses re-coated? Agree - this is no test for flare or veiling effects. I had the lenses cleaned and recoated by Malcolm Taylor here in the UK. I should add that he polished out the scratches from the front element of the summicron and reground to maintain correct curvature. It think he did a very good job. 3 hours ago, AndreasG said: Good comparison, very well done! How did you focus - nose, eyes, ear? The crops show visible differences of the bear's face between the lenses which might be caused by focussing and not only by lens performance? You are right, lens focus is critical here. I did my best to focus on the eyes in each picture, and refocussed for each aperture in case of focus shift - known to be significant with the Sonnar. The printed card is very close to, but not exactly on, the plane of the eyes. One thing I noticed was how much easier it was to focus the Summilux given its high contrast than say the Summarit. Perhaps what surprised me most about this test was just how good centre performance of the Summarit was at f2 compared with the Sonnar. However, it is worth noting that the latter is not at its best at close distances. 2 Link to post Share on other sites More sharing options...
lct Posted October 21, 2019 Share #26 Posted October 21, 2019 15 hours ago, UliWer said: [...] With the Summilux asph you'll see a leap forward in all respects. [...] With some sharper bokeh around f/2.8 though. 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! 1 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/302578-fifties-from-the-fifties-vs-those-from-the-modern-day/?do=findComment&comment=3839713'>More sharing options...
Guest JMF Posted October 21, 2019 Share #27 Posted October 21, 2019 Advertisement (gone after registration) 1 hour ago, sinjun said: Agree - this is no test for flare or veiling effects. I had the lenses cleaned and recoated by Malcolm Taylor here in the UK. I should add that he polished out the scratches from the front element of the summicron and reground to maintain correct curvature. It think he did a very good job. You are right, lens focus is critical here. I did my best to focus on the eyes in each picture, and refocussed for each aperture in case of focus shift - known to be significant with the Sonnar. The printed card is very close to, but not exactly on, the plane of the eyes. One thing I noticed was how much easier it was to focus the Summilux given its high contrast than say the Summarit. Perhaps what surprised me most about this test was just how good centre performance of the Summarit was at f2 compared with the Sonnar. However, it is worth noting that the latter is not at its best at close distances. Thanks for sharing this test. Did Malcolm Taylor provide this recoating service recently? Best, JM. Link to post Share on other sites More sharing options...
Wonzo Posted October 21, 2019 Share #28 Posted October 21, 2019 Very interesting and good work ! Thank you for the comparisons ! Link to post Share on other sites More sharing options...
jankap Posted October 21, 2019 Share #29 Posted October 21, 2019 +1 Link to post Share on other sites More sharing options...
jankap Posted October 21, 2019 Share #30 Posted October 21, 2019 58 minutes ago, lct said: With some sharper bokeh around f/2.8 though. 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! Please explain this picture. Left <-> right? Right onion rings? How did you produce these? Link to post Share on other sites More sharing options...
sinjun Posted October 21, 2019 Author Share #31 Posted October 21, 2019 1 hour ago, lct said: With some sharper bokeh around f/2.8 though. 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! Here's the summilux at 2.8. I suppose I can see something of what you are talking about but I don't think it's a big deal. Link to post Share on other sites More sharing options...
sinjun Posted October 21, 2019 Author Share #32 Posted October 21, 2019 1 hour ago, JMF said: Thanks for sharing this test. Did Malcolm Taylor provide this recoating service recently? Best, JM. No problem. Yes, I got the lenses back within the last couple of weeks. It took a while though - I think he has been ill recently. Link to post Share on other sites More sharing options...
lct Posted October 21, 2019 Share #33 Posted October 21, 2019 (edited) 1 hour ago, jankap said: Please explain this picture. Left <-> right? Right onion rings? How did you produce these? Just a test i did 10+ years ago on a Maglite torch in a dark room. Left: 50/1.4 asph, normal contrast. Right: ditto with reduced contrast in PP. Another test hereafter. Above: 50/1.4 asph at f/2.8. Below: 50/1.4 v3 at f/2.8. FWIW. 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 21, 2019 by lct 1 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/302578-fifties-from-the-fifties-vs-those-from-the-modern-day/?do=findComment&comment=3839785'>More sharing options...
jankap Posted October 22, 2019 Share #34 Posted October 22, 2019 Thank you, the difference is clear visible. Interesting. Link to post Share on other sites More sharing options...
Ko.Fe. Posted October 22, 2019 Share #35 Posted October 22, 2019 Well, even re-coated, Summarit 50 1.5 shows its pre-war optics (I read in Puts book). I had no issues with it on C-41 and BW film, but it just old lens on digital @f1.5. IMO. Cron V1 seems to be not so bad @f2. If I would know, I would have stopped sell/buy and still using it. But I went through all of the Cron versions after it. While been good on digital, I'm finding all of Crons after collapsible to be flat on bw film, prints. Link to post Share on other sites More sharing options...
Stealth3kpl Posted October 22, 2019 Share #36 Posted October 22, 2019 On 10/21/2019 at 1:35 PM, JMF said: Thanks for sharing this test. Did Malcolm Taylor provide this recoating service recently? Best, JM. On 10/21/2019 at 3:26 PM, sinjun said: No problem. Yes, I got the lenses back within the last couple of weeks. It took a while though - I think he has been ill recently. Malcolm has been ill recently. He is much better now, but he is limiting the amount of work he takes on (although he did offer to sort my 111f out). He re-cemented and coated my Summitar which is another surprisingly good 50 from the 40/50's being the design just prior to the collapsible Summicron I think. The Summitar has a bonded compound lens as the front element whereas the Summicron has two separate elements (I might be wrong there though). The Summar which preceeded the Summitar had a single and smaller objective element. Pete Link to post Share on other sites More sharing options...
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