bab Posted April 20, 2011 Share #121 Posted April 20, 2011 Advertisement (gone after registration) This would be interesting if one knew for sure that the lens was not at fault as previously mentioned. I am hesitating to buy another lens without also buying another body because it is difficult to have one body and several lenses focusing spot on unless your using them on a daily basis. Having the ability to memorize the subtle corrections at varying focal distances. I find an underlying humor in the fact that Leica glass has so much hoopla on its bitter sharpness and yet the camera cant always find that bitter sharpness looking through the rangefinder or the fault maybe the user. If I were to use the camera system to make a living I would have several bodies and a single piece of glass dialed in for each body! Is there a way to focus the camera as accurately in a vertical position as in the horizontal. I seem to never be able to focus when my camera is in the vertical position/ Link to post Share on other sites More sharing options...
Advertisement Posted April 20, 2011 Posted April 20, 2011 Hi bab, Take a look here M9 - coincidence at infinity. I'm sure you'll find what you were looking for!
luuca Posted April 20, 2011 Share #122 Posted April 20, 2011 (edited) ok, I've done it. and now I'm in trouble the setting of the RF was simple thanks to this thread and now the focus is spot on with my summilux 50 from infinity to 1 m. the problem is that now the arm of the RF is not tighten, even if I tight as much as I can the screw "A" (see the pic of Julian Thompson http://www.l-camera-forum.com/leica-forum/attachments/leica-m9-forum/197740d1271168348-m9-coincidence-infinity-diagram.jpg)... it still have half a millimeter that let the arm move up and down the cause is not the position of the cam, because I tried to change it without any differences it seems the screw "A" is too long to tighten! what can it be? nothing that can avoid me to use the camera, but it's annoying... I'm sure before the arm was perfectly fixed Edited April 20, 2011 by luuca Link to post Share on other sites More sharing options...
Washington Posted April 20, 2011 Share #123 Posted April 20, 2011 Was this screw tight enough to allow motion with no ‘’slop’’ in the first place? Link to post Share on other sites More sharing options...
Washington Posted April 20, 2011 Share #124 Posted April 20, 2011 Oh, it occurred to me that range-finder coincidence is no coincidence. (never mind-sorry) Link to post Share on other sites More sharing options...
luuca Posted April 20, 2011 Share #125 Posted April 20, 2011 Was this screw tight enough to allow motion with no ‘’slop’’ in the first place? yes. sure. Before my "surgery" everything was firm, though allowing arm motion. Link to post Share on other sites More sharing options...
Washington Posted April 20, 2011 Share #126 Posted April 20, 2011 I don’t know what to tell you here…. obviously the pivot screw SHOULD tighten and yours does not. Well, you do feel like you’ve applied enough torque to tighten the screw but it seems like it’s at a dead stop right? You absolutely do not want to twist it hard enough to break it…. damn, I just don’t know what to do. I sure hope someone has an answer here…. it just doesn’t make sense. How it loosened in the first place baffles me. Link to post Share on other sites More sharing options...
Washington Posted April 20, 2011 Share #127 Posted April 20, 2011 Advertisement (gone after registration) luuca, I started a new thread in the hopes that someone can give you the answer. That’s what this forum is for! Good info. I wish you luck. Link to post Share on other sites More sharing options...
bocaburger Posted April 20, 2011 Share #128 Posted April 20, 2011 ok, I've done it. and now I'm in trouble the setting of the RF was simple thanks to this thread and now the focus is spot on with my summilux 50 from infinity to 1 m. the problem is that now the arm of the RF is not tighten, even if I tight as much as I can the screw "A" (see the pic of Julian Thompson http://www.l-camera-forum.com/leica-forum/attachments/leica-m9-forum/197740d1271168348-m9-coincidence-infinity-diagram.jpg)... it still have half a millimeter that let the arm move up and down the cause is not the position of the cam, because I tried to change it without any differences it seems the screw "A" is too long to tighten! what can it be? nothing that can avoid me to use the camera, but it's annoying... I'm sure before the arm was perfectly fixed How much did you loosen the screw in the first place? All it needs is a 1/2 turn at most. If you backed it out too far you might have it cross-threaded now, which would account for why it would feel tight but stop well shy of locking the mechanism. Given the necessity of approaching with a driver on an angle, it's possible to do that. I don't have any M cameras here in my office so I can't take a look and see if there are other possibilities. You could try backing the screw out and re-tightening, being sure it's going on straight. Link to post Share on other sites More sharing options...
Washington Posted April 20, 2011 Share #129 Posted April 20, 2011 He says he never touched the pivot screw. Link to post Share on other sites More sharing options...
Washington Posted April 21, 2011 Share #130 Posted April 21, 2011 I don’t have a set of proper hollow ground jewelers size screw-drivers myself. These are quite common for gun-smiths where a deformed screw is quite unacceptable on outside appearance. I think I found the right set today, ordered it, and I hope for the best. This being said I will look into this problem on my own camera. I need to take some time with all the adjustments anyway. Cheers. Link to post Share on other sites More sharing options...
luuca Posted April 21, 2011 Share #131 Posted April 21, 2011 today I'll try to explain the problem posting 2 pics that show the arm movement. Link to post Share on other sites More sharing options...
luuca Posted April 21, 2011 Share #132 Posted April 21, 2011 (edited) here you are 2 pics: the entire pivot comes up and let the arm move, even if the screw is well tight 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 April 21, 2011 by luuca 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/118043-m9-coincidence-at-infinity/?do=findComment&comment=1651832'>More sharing options...
bocaburger Posted April 21, 2011 Share #133 Posted April 21, 2011 (edited) Re-reading what you wrote initially, if what you are describing is only 0.5mm of vertical play at the follower wheel, then that is not abnormal. It is cantilevered some distance, and so force applied at the wheel has enough leverage to displace it vertically a small amount. I thought you meant that the arm was loose at the joint where the 2 sections are joined at the pivot despite the screw seeming to be tight. That would not be normal. Edited April 21, 2011 by bocaburger Link to post Share on other sites More sharing options...
elgenper Posted April 21, 2011 Share #134 Posted April 21, 2011 Re-reading what you wrote initially, if what you are describing is only 0.5mm of vertical play at the follower wheel, then that is not abnormal. It is cantilevered some distance, and so force applied at the wheel has enough leverage to displace it vertically a small amount. I thought you meant that the arm was loose at the joint where the 2 sections are joined at the pivot despite the screw seeming to be tight. That would not be normal. Mine does the same when I test it now, and it has never been ´adjusted´ since delivery. Would never have noticed it if it hadn´t been for this thread... However, and that MIGHT be important: when I move the roller vertically, the RF patch view doesn´t move vertically at all in the finder (and I don´t think it should). Luuca, if yours does, you may still be in trouble.... Link to post Share on other sites More sharing options...
luuca Posted April 21, 2011 Share #135 Posted April 21, 2011 ... I thought you meant that the arm was loose at the joint where the 2 sections are joined at the pivot despite the screw seeming to be tight. That would not be normal. that's exactly what I meant. excuse me for my poor written english... Link to post Share on other sites More sharing options...
bocaburger Posted April 21, 2011 Share #136 Posted April 21, 2011 (edited) that's exactly what I meant. excuse me for my poor written english... Can you still turn the slotted adjustment washer (under the screw) where the 2 halves of the arm are joined? If so, then the screw is not fully seated even though you can't turn it. That would indicate the screw is binding in the threads. If the washer is secured and you can displace the cam follower wheel 0.5mm vertically, then what you are experiencing is normal play. If the washer is secure, and the arm is very loose and wiggly (2-3mm of play for example) then the rangefinder shaft (the one that runs up through the top and operates the rangefinder mechanism) might be loose or damaged. That can happen if, when one loosens or tightens the locking screw, one applies too much force vertically against the cam follower arm. In light of English not being your first language, I hope my technical explanation isn't more confusing than helpful, and I apologize if it is less than clear. All I can suggest further is that if you have the possibility, check another Leica M body (all of the rangefinder mechanics are the same in terms of the arm) and see if yours is indeed abnormal. Maybe it isn't, and you can rest easy. If you do determine you have a problem, then you know you need to have it looked at by a pro. Edited April 21, 2011 by bocaburger Link to post Share on other sites More sharing options...
Nick_S Posted April 21, 2011 Share #137 Posted April 21, 2011 adli Another thanks for posting the link to the M2 service manual, this is very interesting reading. Nick Link to post Share on other sites More sharing options...
luuca Posted April 21, 2011 Share #138 Posted April 21, 2011 Can you still turn the slotted adjustment washer (under the screw) where the 2 halves of the arm are joined? If so, then the screw is not fully seated even though you can't turn it. That would indicate the screw is binding in the threads. If the washer is secured and you can displace the cam follower wheel 0.5mm vertically, then what you are experiencing is normal play. If the washer is secure, and the arm is very loose and wiggly (2-3mm of play for example) then the rangefinder shaft (the one that runs up through the top and operates the rangefinder mechanism) might be loose or damaged. That can happen if, when one loosens or tightens the locking screw, one applies too much force vertically against the cam follower arm. In light of English not being your first language, I hope my technical explanation isn't more confusing than helpful, and I apologize if it is less than clear. All I can suggest further is that if you have the possibility, check another Leica M body (all of the rangefinder mechanics are the same in terms of the arm) and see if yours is indeed abnormal. Maybe it isn't, and you can rest easy. If you do determine you have a problem, then you know you need to have it looked at by a pro. SOLVED!! it seems the screw has only one starting point to properly tighten the pivot. I probably loosen too much the first time and then I missed the exact position to begin to turn the screw. now everything is firm! many thanks to all of you! Link to post Share on other sites More sharing options...
Washington Posted April 21, 2011 Share #139 Posted April 21, 2011 Hooray! Great! Link to post Share on other sites More sharing options...
Washington Posted April 22, 2011 Share #140 Posted April 22, 2011 I want to thank Julian Thompson for his great detailed explanation of this adjustment (and all the fellows who added more insight too!) I never was totally clear on the relationships involved and now I feel as I’ll get it right. I printed out on photo paper all the directions and photos of same involved in the process so I can have them at hand on the bench when I go after it. Thanks again. Link to post Share on other sites More sharing options...
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