TRIago Posted March 8, 2016 Share #81 Posted March 8, 2016 Advertisement (gone after registration) Not certain what you're trying to demonstrate using an a7s and focusing with its EVF.I'm certain he's trying to demonstrate the focus shift (or the lack of) issue. EVF's got nothing to do with it. Link to post Share on other sites More sharing options...
Advertisement Posted March 8, 2016 Posted March 8, 2016 Hi TRIago, Take a look here New summicron asph 35mm. How and why did they improve the current one?. I'm sure you'll find what you were looking for!
lct Posted March 8, 2016 Share #82 Posted March 8, 2016 EVF with focus magnification is just a good way to make sure that focussing is nailed at the chosen aperture i.e. f/2 for the pics above. Link to post Share on other sites More sharing options...
lct Posted March 9, 2016 Share #83 Posted March 9, 2016 Reverting to the topic, Wetzlar just said to my dealer that "About the 35/2, the optical formula is the same as that of the previous version but the diaphragm is rounder thanks to its eleven blades". Not sure if i will upgrade my copy then as i prefer the clip-on hood of the previous version. 5 1 Link to post Share on other sites More sharing options...
jcraf Posted March 13, 2016 Share #84 Posted March 13, 2016 Shifting away from focus issues, I know this thread relates to the new 35 Summicron, but I picked up the new 28 Elmarit-M Asph yesterday, which was bought to replace my late-lamented Mk1 version of this petite little marvel. I loved that lens. Haven't shot with the new one yet. However I am a little disappointed to note that the aperture ring moves a tad to easily IMHO. Not a twirler, but close. Just like my 35 'Lux FLE. Subtracts a little from the usual feeling of jewel-like solidity of M lenses. Is the new 35 Summicron the same, I wonder? Link to post Share on other sites More sharing options...
sdk Posted March 14, 2016 Share #85 Posted March 14, 2016 Every Leica lens I own has too loose an aperture ring (all are modern 21st century ones: 24mm/3.8, new 28mm/2.8, 28mm/2, and 75mm/2). I much prefer the Zeiss ZM lens designs in this regard, they seem to have the right amount of tension in their aperture rings. It's far too easy to accidentally change aperture on modern Leica M lenses. I don't understand why they choose to do this, but clearly it's an intentional design choice. 1 Link to post Share on other sites More sharing options...
lct Posted March 14, 2016 Share #86 Posted March 14, 2016 None of my 30+ M lenses has a loose aperture ring i must say. I would get them fixed otherwise. But it is easier to accidentally change aperture on some of them than of my 50/1.5 & 35/2.8 ZM lenses i agree. 1 Link to post Share on other sites More sharing options...
Jeff S Posted March 14, 2016 Share #87 Posted March 14, 2016 Advertisement (gone after registration) I fiddled with a new 90 Macro Elmar at a dealer recently, and I disliked the easy 'twirling' of the aperture ring....I wouldn't have accepted that lens, and wondered if it was an anomaly. Jeff Link to post Share on other sites More sharing options...
lm_user Posted March 16, 2016 Share #88 Posted March 16, 2016 Reverting to the topic, Wetzlar just said to my dealer that "About the 35/2, the optical formula is the same as that of the previous version but the diaphragm is rounder thanks to its eleven blades". Not sure if i will upgrade my copy then as i prefer the clip-on hood of the previous version. I ldont understand why onw would want rounded aperture blades. They wont produce sunstars - a characteristic I like to invoke from time to time. If I want bokeh I shoot wide open and the blades dont matter. Am I missing something?? Link to post Share on other sites More sharing options...
james.liam Posted March 16, 2016 Share #89 Posted March 16, 2016 (edited) I ldont understand why one would want rounded aperture blades. They won't produce sunstars - a characteristic I like to invoke from time to time. If I want bokeh I shoot wide open and the blades don't matter. Am I missing something?? Maybe they simply set out to create the "New King of Bokeh"? Everything else being equal, more numerous and rounded blades do tend to soften/smooth the bokeh, imparting what many deem as visually "more pleasing". Edited March 16, 2016 by james.liam 1 Link to post Share on other sites More sharing options...
NoctiluxM240 Posted April 20, 2016 Share #90 Posted April 20, 2016 Also my Summicron suffer of focus shift, I did all kinds of tests, before on my m9p and then on the M240 that I bought after m9p, live view, digital viewfinder, close up, from a distance, focus shift is always very clear... Link to post Share on other sites More sharing options...
lct Posted April 21, 2016 Share #91 Posted April 21, 2016 Also my Summicron suffer of focus shift, I did all kinds of tests, before on my m9p and then on the M240 that I bought after m9p, live view, digital viewfinder, close up, from a distance, focus shift is always very clear... It is not focus shift if you get it in LV/EVF mode. Perhaps your lens needs a good CLA. My 35/2 asph v1 from 2010 has no focus shift at all. I have no experience with the current v2 though. Link to post Share on other sites More sharing options...
semi-ambivalent Posted April 21, 2016 Share #92 Posted April 21, 2016 Reverting to the topic, Wetzlar just said to my dealer that "About the 35/2, the optical formula is the same as that of the previous version but the diaphragm is rounder thanks to its eleven blades". Not sure if i will upgrade my copy then as i prefer the clip-on hood of the previous version. That should probably be "Not sure if i will "upgrade" my copy...". Maybe something like 'newer-ize' would be better. s-a Link to post Share on other sites More sharing options...
NoctiluxM240 Posted April 21, 2016 Share #93 Posted April 21, 2016 It is not focus shift if you get it in LV/EVF mode. Perhaps your lens needs a good CLA. My 35/2 asph v1 from 2010 has no focus shift at all. I have no experience with the current v2 though. ... no, with LV EVF I can correct the focus shift... with the rangefinder obviously not. My lens has a serial number that begins with 39 is 6bit. From my tests the lens also has a slight imperfection of the focus point, very very light, but this probably makes worse the focus shift. This lens can only be used to the maximum at f2.8, f4 and f5.6 are unusable , f8 you can use it again. If used with live view the lens is sharp at any aperture. Link to post Share on other sites More sharing options...
lct Posted April 21, 2016 Share #94 Posted April 21, 2016 A good CLA should fix this then. Link to post Share on other sites More sharing options...
microview Posted April 21, 2016 Share #95 Posted April 21, 2016 I fiddled with a new 90 Macro Elmar at a dealer recently, and I disliked the easy 'twirling' of the aperture ring....I wouldn't have accepted that lens, and wondered if it was an anomaly. Jeff No, mine is relatively 'slack' as well. Nice lens however: I think the files with the 90APO are better but there's the weight to consider in practical terms. Link to post Share on other sites More sharing options...
NoctiluxM240 Posted April 21, 2016 Share #96 Posted April 21, 2016 A good CLA should fix this then. I honestly do not think so ... The focus shift is a feature of the lens ... to remove it you have to change the optical design, or at least some lens. Mine is a version created for the film, the film had much less resolution, perhaps you do not realize even the problem... Link to post Share on other sites More sharing options...
lct Posted April 21, 2016 Share #97 Posted April 21, 2016 Well i don't want to repeat myself ad nauseam but if lenses like mine have zero focus shift there must be a reason. See http://www.l-camera-forum.com/topic/255654-new-summicron-asph-35mm-how-and-why-did-they-improve-the-current-one/page-4 Link to post Share on other sites More sharing options...
NoctiluxM240 Posted April 21, 2016 Share #98 Posted April 21, 2016 (edited) I saw the tests that you have done... wide open your lens is not very sharp... Edited April 21, 2016 by Noctiluxm9p Link to post Share on other sites More sharing options...
Gregm61 Posted April 21, 2016 Share #99 Posted April 21, 2016 (edited) One reason for an updated version might actually not be directly related to Leica. Quite a few people now use Leica lens gear on newer mirrorless camera models from other brands - e.g. Sony A7 series. This includes me, too. I bought the 35/2 ASPH one year ago before I had a Leica M camera. I sold this lens quickly again - because it did not work at all with the Sony FF sensor (always blurry corners even at f/11, uneven focus plane). There are several reasons for it, one is the pupil entrance of the lens the other one is a thicker glass cover on Sony A7 series based sensors compared to Leica's digital sensors. Interestingly, the version 4 non-ASPH and older Leica 35/2 lenses work well here. I suspect that the latest 35/2 ASPH version might correct for those issues very visible on non Leica based FF sensors. I am sure we will hear more about its performance later. I very much doubt Leica is concerned with improving lens performance for use with other model cameras, just like I doubt Sony is hard at work developing sensors to deal with Leica wide angle lenses. Edited April 21, 2016 by Gregm61 Link to post Share on other sites More sharing options...
lct Posted April 21, 2016 Share #100 Posted April 21, 2016 I saw the tests that you have done... wide open your lens is not very sharp... Your expectations are higher than mine then. Compared to my other "fast" 35's (M 35/1.4 v2, M 35/1.4 FLE, M 35/2 v4, R 35/2), the 35/2 asph is my sharper Leica 35 at f/2 at the sole exception of the FLE. Link to post Share on other sites More sharing options...
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