LotharZhou Posted January 19, 2012 Author Share #21 Posted January 19, 2012 Advertisement (gone after registration) this is the nokton at 100% also, center 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! 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/170861-the-35-summicron-asph-sharpness-issue-continued/?do=findComment&comment=1902695'>More sharing options...
Advertisement Posted January 19, 2012 Posted January 19, 2012 Hi LotharZhou, Take a look here the 35 summicron asph sharpness issue continued. I'm sure you'll find what you were looking for!
LotharZhou Posted January 19, 2012 Author Share #22 Posted January 19, 2012 this is the cron on GF1, center, notice the small text on top is not as sharp as the next one from nokton 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! 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/170861-the-35-summicron-asph-sharpness-issue-continued/?do=findComment&comment=1902704'>More sharing options...
LotharZhou Posted January 19, 2012 Author Share #23 Posted January 19, 2012 the nokton on GF1 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! 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/170861-the-35-summicron-asph-sharpness-issue-continued/?do=findComment&comment=1902705'>More sharing options...
lct Posted January 19, 2012 Share #24 Posted January 19, 2012 Did you focus bracket with the Summicron? If not, it could be useful to focus a bit closer and a bit farther to check out if you get a sharper result. Link to post Share on other sites More sharing options...
LotharZhou Posted January 19, 2012 Author Share #25 Posted January 19, 2012 Yes, I have done that a lot, still same, the center is just soft, no matter how I try to adjust the distance. Did you focus bracket with the Summicron? If not, it could be useful to focus a bit closer and a bit farther to check out if you get a sharper result. Link to post Share on other sites More sharing options...
lct Posted January 19, 2012 Share #26 Posted January 19, 2012 When you sent the lens to Solms, did you send them the M8 as well? Link to post Share on other sites More sharing options...
LotharZhou Posted January 19, 2012 Author Share #27 Posted January 19, 2012 Advertisement (gone after registration) Yes I did, just didn't make much improvement, that's why they sent me an email with that digital camera restricted only statement. When you sent the lens to Solms, did you send them the M8 as well? Link to post Share on other sites More sharing options...
Lindolfi Posted January 19, 2012 Share #28 Posted January 19, 2012 Here are some test images I just made with the Summicron 35/2.0 Asph on an M9 at 100% (crops from the center of the image) and at f/2 f/2.8 f/4.0 The lens out-tresolves the sensor at all apertures and near the limit of the sensor (70 linepairs/mm), the contrast is still high. Unfortunately I don't have a CV 35/1.2 V1 to compare here, but I see no problems with the Summicron 35 asph. Link to post Share on other sites More sharing options...
lct Posted January 19, 2012 Share #29 Posted January 19, 2012 Leica's reply sounds like a bad excuse. If they had coded the lens (which they haven't i presume), they would have returned it ready for digital and could hardly pretend that it has been "constructed for analog cameras". Did you think of having your lens coded by Leica? This is a rather expensive process but this would ruin their excuse and could solve your problem eventually. Link to post Share on other sites More sharing options...
Lindolfi Posted January 19, 2012 Share #30 Posted January 19, 2012 Here are some test images I just made with the Summicron 35/2.0 Asph on a Panasonic GF1 handfocussed at 100% (crops from the center of the image) and at f/2 f/2.8 f/4.0 As you can see, the resolution keeps on increasing to about 90 linepairs/mm, even at f2.0, but now the contrast is dropping a bit compared to the exposure at f/4.0 between 70 and 90 linepairs/mm. Link to post Share on other sites More sharing options...
LotharZhou Posted January 19, 2012 Author Share #31 Posted January 19, 2012 thanks for the test images, interestingly the F2 is very close to the F4 sharpness, mine just not as sharp in the center.But the sharpness is great at F2.8 which I noticed. Here are some test images I just made with the Summicron 35/2.0 Asph on an M9 at 100% (crops from the center of the image) and at f/2 f/2.8 f/4.0 The lens out-tresolves the sensor at all apertures and near the limit of the sensor (70 linepairs/mm), the contrast is still high. Unfortunately I don't have a CV 35/1.2 V1 to compare here, but I see no problems with the Summicron 35 asph. Link to post Share on other sites More sharing options...
LotharZhou Posted January 19, 2012 Author Share #32 Posted January 19, 2012 It is 6 bit coded, so there is no excuse for Leica. Leica's reply sounds like a bad excuse. If they had coded the lens (which they haven't i presume), they would have returned it ready for digital and could hardly pretend that it has been "constructed for analog cameras". Did you think of having your lens coded by Leica? This is a rather expensive process but this would ruin their excuse and could solve your problem eventually. Link to post Share on other sites More sharing options...
Lindolfi Posted January 19, 2012 Share #33 Posted January 19, 2012 thanks for the test images, interestingly the F2 is very close to the F4 sharpness, mine just not as sharp in the center.But the sharpness is great at F2.8 which I noticed. That suggests one of 2 posibilities 1] There is still a problem with focussing. Looking at photographs of printed material at 100% is a very critical test, so any focus error will show up, more at f/2.0 than at f/2.8 due to DOF. 2] You have a bad lens due to some slight variation in curvature of a lens element, or a slightly displaced lens element for instance. That is highly unlikely, but possible. Personally I think of the first explanation. Link to post Share on other sites More sharing options...
lct Posted January 19, 2012 Share #34 Posted January 19, 2012 The OP did focus bracket already. Link to post Share on other sites More sharing options...
Lindolfi Posted January 19, 2012 Share #35 Posted January 19, 2012 The OP did focus bracket already. It is hard to do an almost continuous focus bracket in tiny steps. Would love to do a direct comparison between the summicron 35 asph of the OP and mine. Link to post Share on other sites More sharing options...
lct Posted January 19, 2012 Share #36 Posted January 19, 2012 He had the same problem at infinity where tiny focus bracketings play a lesser role i guess. Not sure if he did focus bracket then though. Link to post Share on other sites More sharing options...
jaapv Posted January 19, 2012 Share #37 Posted January 19, 2012 Despite the lens having been to Leica I am thinking of something like displaced element. The images posted by the OP certainly do not show the clarity the lens is capable of. Link to post Share on other sites More sharing options...
LotharZhou Posted January 19, 2012 Author Share #38 Posted January 19, 2012 The biggest disappointment is the lens has been to solmser twice with the m8 together. It still shows the softer center compare to any other of my 35 lenses. I have lost patient already, considering to get a zm biogon to replace this one. Despite the lens having been to Leica I am thinking of something like displaced element. The images posted by the OP certainly do not show the clarity the lens is capable of. Link to post Share on other sites More sharing options...
jaapv Posted January 19, 2012 Share #39 Posted January 19, 2012 I would be thinking similar thoughts. Or a Summarit -Ii have heard nothing but good things. Link to post Share on other sites More sharing options...
fotografr Posted January 20, 2012 Share #40 Posted January 20, 2012 After reading this thread I decided to put my 35/2 asph on my M8 and run a quick test. My conclusion is that you must have a bad copy. I can't imagine needing a lens to be sharper than this. The image was shot at f/2.0 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! 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/170861-the-35-summicron-asph-sharpness-issue-continued/?do=findComment&comment=1903663'>More sharing options...
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