Lindolfi Posted March 6, 2013 Share #21 Posted March 6, 2013 Advertisement (gone after registration) Just got the Novoflex LEM/CAN adapter for Canon FD lenses. It is very well made, has exactly the right flange-flange distance (14.20 mm) and has a small section for M lens coding, in which you can remove some of the whitish paint yourself. It brings up the 50/75 frameline pairs. So if you need the 28/90 pairs, some of the ridge has to be milled off. This is only interesting if there are R lens profiles that can be of used for Canon FD lenses. (The M 240 brings up the R profiles when 28/90 pairs are evoked and there is a lens code 110111 = 55 on the ring) The Novoflex adapter has no lock-open ring for aperture control (measuring or focussing at full opening). You just mount it so that aperture control on the lens can be used, which is fine and much like you use M lenses. Link to post Share on other sites More sharing options...
Advertisement Posted March 6, 2013 Posted March 6, 2013 Hi Lindolfi, Take a look here Non Leica slr lenses on the new M. I'm sure you'll find what you were looking for!
AlanJW Posted March 6, 2013 Share #22 Posted March 6, 2013 Interesting! Does the 6-bit code correspond to just that it is an R lens and for each lens you connect to the adapter you select it in the menu? If I ever get an M someday it would be interesting to use my Nikon 200mm F/2 there. Best lens ever! The six bit code will correspond to the Leica R to M adapter; I've also asked John to mill the flange so it brings up 28-90 lines. Then I intend to select a Leica lens closest to the Nikons I will use. This is all a bit of an experiment of course. Link to post Share on other sites More sharing options...
mmradman Posted March 6, 2013 Share #23 Posted March 6, 2013 I think we established that adapters with bayonet lugs that brings 50/75mm framelines can be easily modified to 35/135 but not 28/90 as bayonet lug that activates frameline is supposed to be longer. To convert 50/75 to 28/90 probably requires full replacement of the bayonet on the male end of the adapter and cost must include parts on top of labour. See http://www.l-camera-forum.com/leica-forum/leica-m9-forum/273258-testing-m-240-a-3.html posts 40 to 43. Link to post Share on other sites More sharing options...
Lindolfi Posted March 6, 2013 Share #24 Posted March 6, 2013 Yes, mmradman, you are right: the notch on the mount for 50mm is 3.6 mm long, while the notch on a 90 mm lens is 5 mm long. So we need more material, not less, to go from 50/75 to 28/90. Link to post Share on other sites More sharing options...
marknorton Posted March 7, 2013 Share #25 Posted March 7, 2013 The six bit code will correspond to the Leica R to M adapter; I've also asked John to mill the flange so it brings up 28-90 lines. Then I intend to select a Leica lens closest to the Nikons I will use. This is all a bit of an experiment of course. Is this just to have some sort of lens info in the EXIF data when you are using a Nikon lens? I don't think you should assume there are any IQ improvements to be had. Link to post Share on other sites More sharing options...
jplomley Posted March 7, 2013 Share #26 Posted March 7, 2013 Would be sweet to have an S-lens adapter! Link to post Share on other sites More sharing options...
AlanJW Posted March 7, 2013 Share #27 Posted March 7, 2013 Advertisement (gone after registration) Is this just to have some sort of lens info in the EXIF data when you are using a Nikon lens? I don't think you should assume there are any IQ improvements to be had. You may be right about IQ but I figured I would experiment and see what kinds of corrections are applied. May work and may not work. The EXIF is problematic too because, for example, there is no Leica equivalent or close to a Nikon 28-300 or 80-400. Or 14-24. It is all just playing around. Maybe I will discover something. We're in a new world with Nikon lenses on an M. I am not expecting Leica quality but some of my Nikon lenses are surprisingly good on a D800e and I don't think they'll be worse on the M. Link to post Share on other sites More sharing options...
k-hawinkler Posted March 7, 2013 Share #28 Posted March 7, 2013 Alan, I am still waiting for my M and am quite interested what you find out about using Nikkor lenses on the M. Thanks. Link to post Share on other sites More sharing options...
wlaidlaw Posted March 7, 2013 Share #29 Posted March 7, 2013 Alan, As far as I am aware, you cannot mill from 35/135 or 50/75 to 28/90, as it involves adding metal on not taking it away. There are a couple of ways to do it. You can bond/weld on a small stepped extension to the frame lines tab and then file it down carefully until it is correct or someone else said you can put in a very small screw in the end of the tab but I am not at all sure how this would work. I have had a somewhat humble "mea culpa" email back from David Llado at Leitax about the misplaced coding pits on his semi permanent R to M adapter. The slot for the lens locking pin is also slightly too tight for the pin on the M-240, which is a few microns bigger than the pins on earlier cameras and the pin does not click into place. If the coding pits were in the correct place, I would just sort this with a Dremel but the whole adapter has to go back and be replaced by one with the coding pits correctly machined. Wilson Link to post Share on other sites More sharing options...
chris_tribble Posted March 7, 2013 Share #30 Posted March 7, 2013 Alan, As far as I am aware, you cannot mill from 35/135 or 50/75 to 28/90, as it involves adding metal on not taking it away. There are a couple of ways to do it. You can bond/weld on a small stepped extension to the frame lines tab and then file it down carefully until it is correct or someone else said you can put in a very small screw in the end of the tab but I am not at all sure how this would work. Wilson - Malcolm added metal (using some dark arts and special solders) to the lug on my Nikon / Canon FD adapters. They work perfectly and the coding pits are in exactly the right place. See below for the Canon adapter Link to post Share on other sites More sharing options...
wlaidlaw Posted March 7, 2013 Share #31 Posted March 7, 2013 If anyone has a digital micrometer, could they please measure the diameter of the lens locking pin on the M240. My old M&W digital micrometer seems to have given up the ghost and is reading all "8's" when you switch on, even with new button cells. I suspect the monsoon weather we have had in the UK over the last 10 months, has saturated the silica gel bag and damp has got in to the electronics. It is sitting in my airing cupboard in the probably vain hope it will dry out. I have measured the locking pin/tab with an optical mechanical vernier calipers and my measurements say M9 - 2.95mm, M240 - 3.07mm, hence why some adapters will not lock in place on the 240. Wilson Link to post Share on other sites More sharing options...
marknorton Posted March 7, 2013 Share #32 Posted March 7, 2013 Wilson, I've checked with my Mitutoyo digital calipers - 2.97mm for the M8, same for the M9, 2.98 for the M240. Looks like the spec is 3mm... Link to post Share on other sites More sharing options...
mmradman Posted March 7, 2013 Share #33 Posted March 7, 2013 Wilson - Malcolm added metal (using some dark arts and special solders) to the lug on my Nikon / Canon FD adapters. They work perfectly and the coding pits are in exactly the right place. See below for the Canon adapter Chris, Would you be able to post close up picture of the finished article? Link to post Share on other sites More sharing options...
AlanJW Posted March 7, 2013 Share #34 Posted March 7, 2013 Alan, I am still waiting for my M and am quite interested what you find out about using Nikkor lenses on the M. Thanks. Will do. But I'm still waiting too. My dealer got one last Friday but I was number 2 on the list. I have my Nikon adapter. I have a Novoflex R to M adapter (because I have one old R lens); I have my EVF. I'm all dressed up with nowhere to go. Link to post Share on other sites More sharing options...
wlaidlaw Posted March 7, 2013 Share #35 Posted March 7, 2013 Wilson, I've checked with my Mitutoyo digital calipers - 2.97mm for the M8, same for the M9, 2.98 for the M240. Looks like the spec is 3mm... Mark, Thank you for doing that. I have now found a better but still mechanical dial gauge calipers and I agree within .01mm. The locking slot in the Leitax R to M adapter is only 2.95 at the widest, hence why the M240 locking tab does not click in. I have redone the coding one recess anti-clockwise, just manually marking an additional black line with a Sharpie, where there is no coding pit and it now picks up as an R lens on the 240. Wilson Link to post Share on other sites More sharing options...
jlm Posted March 7, 2013 Share #36 Posted March 7, 2013 not so easy to go from a 50 frameline to 28/90. my suggestion: use two adapters: on the lens: your lens to leica 39mm thread, to which is attached the L39-LM adapter with 28/90 framelines and coded recesses. jm Link to post Share on other sites More sharing options...
wlaidlaw Posted March 7, 2013 Share #37 Posted March 7, 2013 I was just looking at the Elephoto M42 to Leica M adapter and you can see they have ground off the tab extension that changes the frame lines, back to the point where it obviously does not activate the micro switch. How very irritating. It may have to go to Malcolm for him to work his magic on. Wilson Link to post Share on other sites More sharing options...
AlanJW Posted March 7, 2013 Share #38 Posted March 7, 2013 I think the important question here is do we know what happens with an uncoded lens and/or "incorrect" flange? Mpre specifically, what happens when: 1. there is a coded lens with "incorrect" flange (not 28/90)? 2. there is an uncoded lens with 28/90 flange? 3. there is an uncoded lens with non 28/90 flange? Is the image not seeable through live view or the EVF, or is it just a matter of whether you can select a particular Leica R lens in a menu? (Jaap: you might consider this for the M FAQs sticky if we do get an answer.) Link to post Share on other sites More sharing options...
wlaidlaw Posted March 7, 2013 Share #39 Posted March 7, 2013 I think the important question here is do we know what happens with an uncoded lens and/or "incorrect" flange? Mpre specifically, what happens when: 1. there is a coded lens with "incorrect" flange (not 28/90)? 2. there is an uncoded lens with 28/90 flange? 3. there is an uncoded lens with non 28/90 flange? Is the image not seeable through live view or the EVF, or is it just a matter of whether you can select a particular Leica R lens in a menu? (Jaap: you might consider this for the M FAQs sticky if we do get an answer.) Alan, I totally agree that before we go rushing off and trying various remedies, we need to know what is actually happening here. Perhaps Jono or Chris could ask their contacts at Leica. We need to know the pre-conditions necessary for a "lens mounted" to be activated. Wilson Link to post Share on other sites More sharing options...
jonoslack Posted March 7, 2013 Share #40 Posted March 7, 2013 I want to re-purchase a Contax 28-85 Vario Sonnar lens, which I know is good. However I cannot find a Contax to M adapter that brings up the 28/90 framelines, so I can access the R menu if I code the adapter as 110111 (55-3). I have spoken to a number of makers but they just don't seem to "get it", that by a minor change in the CNC file, they stand to clean up on the market. The lack of commercial nous surprises me. There are other great Contax lenses that we might consider, the 35-135 and 100-300 Vario Sonnars. I think I am right in saying that the M240 R to M adapter is not yet in the shops. Wilson Hi Wilson You and me both. I've even tried to talk to Novioflex about this, and they've completely ignored me. I'm also interested in Contax lenses. I do have an adapter, but it brings up 35/135 Framelines. Still, from a practical viewpoint, manually coding for the longer focal length works okay (the M really doesn't need corrections for any SLR lenses) Maybe this is John Milich's big moment! I bought a minty Contax 28-85 yesterday for €349, and I'm teetering on a new in box 35-135 today. If you can get a decent adapter with the wrong Framelines then it'll work fine as long as you use manual selection. Link to post Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.