mirekti Posted January 16, 2021 Share #21 Posted January 16, 2021 (edited) Advertisement (gone after registration) I've been using J-9 in my anamorphic setup for video and kind of got hooked to Sonnar design. Today I have ordered an L39 to M mount adapter that allows coding. So before I start thinking about doing the shimming part what would one recommend to code it as? I guess a 90mm, but which one? Thanks and cheers!!! BTW I will use it with M10, but found this thread. I hope this is ok. Edited January 16, 2021 by mirekti Quote Link to post Share on other sites More sharing options...
Advertisement Posted January 16, 2021 Posted January 16, 2021 Hi mirekti, Take a look here Jupiter-9 85m F2.0 lens M39 for M8. I'm sure you'll find what you were looking for!
pippy Posted January 16, 2021 Share #22 Posted January 16, 2021 22 minutes ago, mirekti said: ...So before I start thinking about doing the shimming part what would one recommend to code it as? I guess a 90mm, but which one?... The earliest 90mm Summicron. I no longer have my M8.2 () but I found that if I had a non-Leitz lens and matched the general era of the 'alien' lens to what Leica were offering at the time the results were always good. Best of luck! Philip. 1 Quote Link to post Share on other sites More sharing options...
boojum Posted January 16, 2021 Share #23 Posted January 16, 2021 (edited) I believe that the M10 and the M8/M8.2 handle lens detection differently. My M8.2 offers lens detection as either "off", "on", or "on with IR and UV" and that is it. Any other information is relayed to the camera by the lens itself. It can trigger the mechanical sensor which informs the frame lines within the rangefinder. If there is an encoded lens flange with its 6 bit encoding specific information more than focal length can be passed to the camera. The M10 is more sophisticated. https://us.leica-camera.com/Service-Support/Support/Downloads?category=93710&subcategory=139034&type=93705&language=93871 LENS TYPE DETECTION The 6-bit coding in the bayonet mount of current Leica M lenses allows the camera to identify the type of lens attached using the sensor in the camera bayonet. – Among other things, this information is used to optimize the picture data. Thus edge darkening which can be noticeable with wide-angle lenses and large apertures can be compensated in the corresponding picture data. – Flash exposure and reflector control also use the lens data (see “Compatible flash units”, p. 182). – In addition, the information provided by this 6-bit coding is writ- ten to the EXIF data for the picture. When displaying extended image data, the lens focal length is also shown. Setting the function 1. Select the menu item Lens Detection , and 2. in the sub-menu the desired version: – OFF , or – Auto , if a coded Leica M lens is attached, or – Manual M / Manual R , if a non-coded Leica M lens is at- tached/a Leica R lens is being used with a Leica R Adapter M (available as an accessory, for further details, refer to the adapter instructionsl). 150 Notes: • When attaching a coded Leica M lens, the camera automatically switches to Auto , even if a different lens had previously been entered in Manual M . • When using Leica R lenses, the camera automatically switches to Manual R , even if Auto had previosuly been entered. • When using Leica M lenses without coding, Auto should not be used to avoid malfunctions, i.e. in these cases, the lens type used should always be entered manually. Manual lens type/focal length entry Earlier Leica M lenses will not be recognized by the camera due to a lack of coding. However, they can be entered via the menu. The same applies to Leica R lenses. 3. In the sub-menu select Manual M / Manual R , and • The monitor shows the relevant list of lenses, which also includes the relevant item numbers to ensure clear identifi- cation. The camera detects whether an M lens is attached, or a Leica R lens using the adapter. The list contains either only M or only R lenses accordingly. 4. select the lens used from the relevant list. Edited January 16, 2021 by boojum 1 Quote Link to post Share on other sites More sharing options...
mirekti Posted February 8, 2021 Share #24 Posted February 8, 2021 I finally managed to get the lens tested. It focuses perfectly at 4 , 6 meters. Haven't had a chance to test the true infinity, but when I set to infinity the objects 200m away are in focus and that's more than good enough for what I need this lens for. Now the close focus. At minimum focus it is back focusing for 2 cm or so. Let's say I have a horizontal scale from 1 to 100, and when I hit focus in rangefinder at number 3, the focus is actually at number 5. It is not horrible so I do hope I could "fix" this, but wondered if I correct the focus at close distance of 1m would it set the mid range (4-8m) focusing off? Would it also change the infinity of the lens? Quote Link to post Share on other sites More sharing options...
frame-it Posted February 8, 2021 Share #25 Posted February 8, 2021 (edited) i love this lens, i have a silver/aluminum early version which apparently has zeiss glass J-9 Variants.pdf Edited February 8, 2021 by frame-it 1 1 Quote Link to post Share on other sites More sharing options...
mirekti Posted February 8, 2021 Share #26 Posted February 8, 2021 So I found the service document, but not really sure what part I should try to shim. Could someone help, please? Jupiter-9 Service.pdf Quote Link to post Share on other sites More sharing options...
frame-it Posted February 8, 2021 Share #27 Posted February 8, 2021 Advertisement (gone after registration) this might help https://www.youtube.com/c/RetroFotoHouse/videos Quote Link to post Share on other sites More sharing options...
pippy Posted February 8, 2021 Share #28 Posted February 8, 2021 46 minutes ago, frame-it said: i love this lens, i have a silver/aluminum early version which apparently has zeiss glass... Interesting! Which exact version do you have if you don't mind my asking? I have a soft spot for the very early post-WWII FSU stuff and there are Contax parts in my earliest KNEB III. Philip. Quote Link to post Share on other sites More sharing options...
BrianS Posted February 8, 2021 Share #29 Posted February 8, 2021 If you adjust the lens for better performance at closest focus then the focus at distance will show a much larger error. If you have the later Black J-9, there is a secondary shim that controls the distance between the rear group and front group. You can decrease that shim slightly to improve close focus. If it is the earlier type, you must increase the main shim, found by unscrewing the optical barrel from the focus mount. Quote Link to post Share on other sites More sharing options...
mirekti Posted February 9, 2021 Share #30 Posted February 9, 2021 (edited) 1 hour ago, BrianS said: If you adjust the lens for better performance at closest focus then the focus at distance will show a much larger error. If you have the later Black J-9, there is a secondary shim that controls the distance between the rear group and front group. You can decrease that shim slightly to improve close focus. If it is the earlier type, you must increase the main shim, found by unscrewing the optical barrel from the focus mount. I think I will just live with what I have. It focuses perfectly from 2m and on, and for close focus I will get used to move focus a tad more when rangefinder’s patch is in focus. Already tried out that method and I was surprised it had actually worked fine. I do have a black version and was able to simply unscrew the front lens block. There is one shim inside. Started to play by screwing it back in until the focus at 1.15m was precise in rangefinder. However, I have lost the mid range precision in that case. That led me to believe it is not only that shim, but I would need to do something else which I am not sure of what. Edited February 9, 2021 by mirekti Quote Link to post Share on other sites More sharing options...
BrianS Posted February 9, 2021 Share #31 Posted February 9, 2021 The J-9 is more difficult to make work across the full range on a Leica than any other Russian lens. I do what you are doing. Have mine good from 1.5m to about 20m, then manually compensate by focusing past where the RF indicates "by a sliver". Quote Link to post Share on other sites More sharing options...
boojum Posted February 9, 2021 Share #32 Posted February 9, 2021 I may be deluded but the J-9 I had tuned by Jadon when he was at Advance Camera seems to work throughout the focus range. The serial number indicates that it was made in '88. All in all a good lens at a very good price. Quote Link to post Share on other sites More sharing options...
BrianS Posted February 9, 2021 Share #33 Posted February 9, 2021 Jadon worked magic on yours... I suspect he removed/reduced the secondary shim, then the main. I did that with one J-9, got it just right- then sold it to someone that I liked their work. Quote Link to post Share on other sites More sharing options...
mirekti Posted February 9, 2021 Share #34 Posted February 9, 2021 20 minutes ago, boojum said: I may be deluded but the J-9 I had tuned by Jadon when he was at Advance Camera seems to work throughout the focus range. The serial number indicates that it was made in '88. All in all a good lens at a very good price. Can you hook me up with Jadon? Quote Link to post Share on other sites More sharing options...
boojum Posted February 9, 2021 Share #35 Posted February 9, 2021 (edited) 6 hours ago, mirekti said: Can you hook me up with Jadon? This is the email I have used: J. He is in the Portland, OR, area. He also rehabs M-9 sensors. Edited February 10, 2021 by jaapv We dont allow publication of private e-mail addresses. 2 Quote Link to post Share on other sites More sharing options...
BrianS Posted February 10, 2021 Share #36 Posted February 10, 2021 https://www.l-camera-forum.com/profile/76824-jadon-rosado/ Jadon is a member of this forum. You can send him a Private Message, he should get a notification. 2 Quote Link to post Share on other sites More sharing options...
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