alex7075 Posted October 6, 2015 Share #221 Posted October 6, 2015 (edited) Advertisement (gone after registration) Sorry; Considering the whole thread is about 'Coincidence at infinity' your statement is completely misplaced IMHO. That's true! When I say "slightly off" I mean something really barely visible; and from a practical point of view, if that's the price to pay only with the Noct to have all distances on all lenses perfectly in focus (included infinity), it seemed fair to me. The thread is also about being able to trust the rangefinder at all distances. Even if, referring to the main subject of the thread, you're absolutely right. Edited October 6, 2015 by alex7075 Quote Link to post Share on other sites More sharing options...
Advertisement Posted October 6, 2015 Posted October 6, 2015 Hi alex7075, Take a look here M9 - coincidence at infinity. I'm sure you'll find what you were looking for!
liondeciel Posted October 15, 2015 Share #222 Posted October 15, 2015 great information!!! thanks everyone! Quote Link to post Share on other sites More sharing options...
rapids41 Posted November 21, 2015 Share #223 Posted November 21, 2015 (edited) Hi again, my M9-P just came back from Leica with a new sensor after 2 month. Unfortunately the rangefinder is off now. The problem is at close distance the rangfinder window does not start moving directly when focusing. So I think the problem is the stop arm, which stops to early: Someone has ever fixed this issue? Can I not simply rotate the eccentric cam B? Please no advices to sent it back to Leica again, I will fix as much as I can on my own, thanks. Edited November 21, 2015 by rapids41 Quote Link to post Share on other sites More sharing options...
rapids41 Posted November 21, 2015 Share #224 Posted November 21, 2015 Just managed to bent the stop arm. Very easy and now everything is perfect again. Quote Link to post Share on other sites More sharing options...
Echo63 Posted December 29, 2015 Share #225 Posted December 29, 2015 Julian Thompson - thank you so much for all the info on the first page i have just successfully recalibrated my M240's Infinity adjustment. i don't know how long it has been "off" but my new (to me) 90 M rocker shows up a major back focus issue, that was there with my 50, but was hidden by my tendency to shoot at f4-5.6 (i had noticed my pictures were looking a little softer than when the gear was brand new though) both lenses focus perfectly now ! going to add a good 2mm allen key to my bag, and grind a screwdriver to fit the arm length adjuster. Quote Link to post Share on other sites More sharing options...
poligow Posted June 10, 2016 Share #226 Posted June 10, 2016 Julian Thompson : thank you Quote Link to post Share on other sites More sharing options...
jaapv Posted June 13, 2016 Share #227 Posted June 13, 2016 Advertisement (gone after registration) Just managed to bent the stop arm. Very easy and now everything is perfect again. Not a good idea. Bending the arm is meant for (very rarely) midrange adjustment. Quote Link to post Share on other sites More sharing options...
poligow Posted June 26, 2016 Share #228 Posted June 26, 2016 Julian Thompson : thank you to add some infos : i had trouble to get a perfectly focused image on my M9 with my 50 Summicrons (both a modern V5 one and a rigid one). i first wanted to tweak the pivot point, but it was impossible to loose the screw, even with a good screw driver (i use Bost or Facom tools). then i discovered my problem came from the infinity which was slightly off. when i usually shot to the infinity i never check for the rangefinder alignment, i just focus the lens to the max ... so i tweaked the roller cam. it took me 10 minutes and a few test shots to get a perfect result ! 1 Quote Link to post Share on other sites More sharing options...
M11 for me Posted July 13, 2017 Share #229 Posted July 13, 2017 i am very sorry to announce that all these findings are not valid any more. I just took the lens off my M10 and do you know what I saw? The first screw is not made for an ordinary screw driver. You need a special tool. Further there is some kind of glue around that screw so that the Leica service immediately sees if something has bee fiddeled around. And even worse: On the side of the wheel there is no opening that you can put a tool in. No, just a round opening. Seemingly Leica wantet to stopp us adjusting the things by ourselves . . . . 1 Quote Link to post Share on other sites More sharing options...
Rus Posted July 13, 2017 Share #230 Posted July 13, 2017 i am very sorry to announce that all these findings are not valid any more. I just took the lens off my M10 and do you know what I saw? The first screw is not made for an ordinary screw driver. You need a special tool. Further there is some kind of glue around that screw so that the Leica service immediately sees if something has bee fiddeled around. And even worse: On the side of the wheel there is no opening that you can put a tool in. No, just a round opening. Seemingly Leica wantet to stopp us adjusting the things by ourselves . . . . not good news for me... Can you possibly post a photo of the RF unit of the M10 please? Thanks! Quote Link to post Share on other sites More sharing options...
jdlaing Posted July 13, 2017 Share #231 Posted July 13, 2017 i am very sorry to announce that all these findings are not valid any more. I just took the lens off my M10 and do you know what I saw? The first screw is not made for an ordinary screw driver. You need a special tool. Further there is some kind of glue around that screw so that the Leica service immediately sees if something has bee fiddeled around. And even worse: On the side of the wheel there is no opening that you can put a tool in. No, just a round opening. Seemingly Leica wantet to stopp us adjusting the things by ourselves . . . . No. That is a lacquer applied to stop the screw from moving. A cotton swab with a little acetone will free it for adjustment. The "special tool" is available everywhere. Leica could care less if you adjust it yourself. Quote Link to post Share on other sites More sharing options...
M11 for me Posted July 13, 2017 Share #232 Posted July 13, 2017 I just shot quickly a makro and I see now that I was only half right. The wheel is made for an allen wrench after all. I did not see this when I just looked without magnification. On the other hand the left screw's construction has definitely changed and a normal screwdriver does not fit anymore. Further there is that lacquer applied . . . 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 1 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/118043-m9-coincidence-at-infinity/?do=findComment&comment=3315264'>More sharing options...
pico Posted July 13, 2017 Share #233 Posted July 13, 2017 (edited) There is no rationale for that fastener head other than to discourage user maintenance. I would dissolve the adhesive (possibly Loctite's 'post fastening' fluid), and try a good gunsmith's screwdriver on a right-angle ratchet. It has a single rather than flat X type blade, but if you muck up one, there's the other. Gunsmith screwdrivers are special because they have various blade thicknesses, and proper thickness fit is critical in screw fasteners. You want to fill the slot. This the set I use. Google Chapman tools. Edited July 13, 2017 by pico Quote Link to post Share on other sites More sharing options...
Rus Posted July 13, 2017 Share #234 Posted July 13, 2017 Thanks for the photo Alex. Glad to see that the wheel is still controlled by the allen key. With regard to the eccentric screw being "locked" by glue, I actually wonder if this makes the RF mechanism more robust -- provided that it has been properly calibrated to the standard, of course -- since there is now only one moving part that is likely to slightly shift position through long-term use. Quote Link to post Share on other sites More sharing options...
jaapv Posted July 13, 2017 Share #235 Posted July 13, 2017 There is no rationale for that fastener head other than to discourage user maintenance. I would dissolve the adhesive (possibly Loctite's 'post fastening' fluid), and try a good gunsmith's screwdriver on a right-angle ratchet. It has a single rather than flat X type blade, but if you muck up one, there's the other. Gunsmith screwdrivers are special because they have various blade thicknesses, and proper thickness fit is critical in screw fasteners. You want to fill the slot. This the set I use. Google Chapman tools. Acetone in miniscule quantities will do the trick. It will reset after evaporation. Adjusting the screw will mainly affect close focus, as opposed the eccentric in the roller wheel which is meant for infinity adjustment. Usually that is all you need. Quote Link to post Share on other sites More sharing options...
jdlaing Posted July 13, 2017 Share #236 Posted July 13, 2017 Thanks for the photo Alex. Glad to see that the wheel is still controlled by the allen key. With regard to the eccentric screw being "locked" by glue, I actually wonder if this makes the RF mechanism more robust -- provided that it has been properly calibrated to the standard, of course -- since there is now only one moving part that is likely to slightly shift position through long-term use. See that cam lever? It rotates on the axis of that screw. It would loosen over time with constant turning. Loctite is not good on the screw threads as it is meant to be adjusted. The spot of lacquer just locks it in place from loosening while still being able to be set free for adjustments. 1 Quote Link to post Share on other sites More sharing options...
pico Posted July 13, 2017 Share #237 Posted July 13, 2017 Glad to see that the wheel is still controlled by the allen key. Is it? Really? Quote Link to post Share on other sites More sharing options...
jdlaing Posted July 13, 2017 Share #238 Posted July 13, 2017 Is it? Really? Yes. Really. 2 Quote Link to post Share on other sites More sharing options...
chlky0001 Posted August 12, 2017 Share #239 Posted August 12, 2017 I just shot quickly a makro and I see now that I was only half right. The wheel is made for an allen wrench after all. I did not see this when I just looked without magnification. On the other hand the left screw's construction has definitely changed and a normal screwdriver does not fit anymore. Further there is that lacquer applied . . . M262 has the same coupling set up, I adjusted the wheel with allen key while turned the screw and arm (didn't see the glue initially). the focus is spot on now. Quote Link to post Share on other sites More sharing options...
gippo Posted November 7, 2017 Share #240 Posted November 7, 2017 Acetone in miniscule quantities will do the trick. It will reset after evaporation. Adjusting the screw will mainly affect close focus, as opposed the eccentric in the roller wheel which is meant for infinity adjustment. Usually that is all you need. Excuse me a question: acetone for nail polish (woman) okay? thank you Quote Link to post Share on other sites More sharing options...
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