Fred C. Stadler Posted October 11, 2014 Share #1 Posted October 11, 2014 Advertisement (gone after registration) Does anyone know of an extender to increase focal length of M lenses. Now that there is live view it ought to be feasible. Quote Link to post Share on other sites More sharing options...
Advertisement Posted October 11, 2014 Posted October 11, 2014 Hi Fred C. Stadler, Take a look here Extender for M?. I'm sure you'll find what you were looking for!
dkCambridgeshire Posted October 11, 2014 Share #2 Posted October 11, 2014 (edited) Does anyone know of an extender to increase focal length of M lenses. Now that there is live view it ought to be feasible. Komura made an M extender which is occasionally available secondhand - and it works OK http://www.l-camera-forum.com/leica-forum/leica-m-lenses/331901-komura-2x-extender-m.html There is one listed by a UK dealer - see PM sent to you. dunk Edited October 11, 2014 by dkpeterborough 1 Quote Link to post Share on other sites More sharing options...
Ecar Posted October 11, 2014 Share #3 Posted October 11, 2014 Depending on your purpose, the old OUFRO works well. There are also cheap Chinese clones on the Bay. Or perhaps consider the Novoflex LEM/VIS II extension rings. 1 Quote Link to post Share on other sites More sharing options...
algrove Posted October 11, 2014 Share #4 Posted October 11, 2014 I think the OP is looking for a 1.4 or 2.0 extender. Quote Link to post Share on other sites More sharing options...
FlashGordonPhotography Posted October 11, 2014 Share #5 Posted October 11, 2014 May I ask why? I can't think of a reason besides a small size for not just getting a cheap Nikkor and adaptor. You'd still be needing live view with an extender and there's going to be an optical quality trade off. May as well get an adapted lens for the same money, unless space really is vital. Gordon Quote Link to post Share on other sites More sharing options...
dkCambridgeshire Posted October 11, 2014 Share #6 Posted October 11, 2014 May I ask why? I can't think of a reason besides a small size for not just getting a cheap Nikkor and adaptor. You'd still be needing live view with an extender and there's going to be an optical quality trade off. May as well get an adapted lens for the same money, unless space really is vital. Gordon Exactly … a 135mm lens is relatively pocketable as is the 2x extender giving 270mm … but try putting e.g. a 280mm lens in your pocket. OK there's a trade off in the reduced aperture but that is not so important these days with high ISO cameras. An extender (unless it's matched and very high quality) will probably degrade resolution but most are good enough. dunk Quote Link to post Share on other sites More sharing options...
Ecar Posted October 12, 2014 Share #7 Posted October 12, 2014 Advertisement (gone after registration) I think the OP is looking for a 1.4 or 2.0 extender. You are probably right. I replied too quickly. Quote Link to post Share on other sites More sharing options...
250swb Posted October 12, 2014 Share #8 Posted October 12, 2014 I agree with Gordon, there are loads of top quality SLR telephoto lenses and with a cheap adapter they do make an excellent combination. I used a 135mm Nikkor on my M and the quality was as good as a 135mm Tele Elmarit. I've also had one of the Komura converters in the past and it was OK but not great, and definitely not as good as a dedicated telephoto. Look for Olympus lenses, they tend to be a bit smaller. Steve Quote Link to post Share on other sites More sharing options...
lct Posted October 12, 2014 Share #9 Posted October 12, 2014 The Apo-Extender-R 1.4x is superb on the R 280/4. Think of it on a M 90/2 apo for example. Would give a 126/2.8 for less than an 135/3.4 with little compromise IQ wise presumably. Those who don't own a 75/2 lens could wish to use it on their 50/1.4 asph as well. The Apo-Extender-R 1.4x was not cheap though. € 1,650 in 2006. Quote Link to post Share on other sites More sharing options...
dkCambridgeshire Posted October 12, 2014 Share #10 Posted October 12, 2014 The Apo-Extender-R 1.4x is superb on the R 280/4. Think of it on a M 90/2 apo for example. Would give a 126/2.8 for less than an 135/3.4 with little compromise IQ wise presumably. Those who don't own a 75/2 lens could wish to use it on their 50/1.4 asph as well. The Apo-Extender-R 1.4x was not cheap though. € 1,650 in 2006. Unlikely the 1.4x APO extender R could be made to fit M lenses in its current configuration - and does not fit many R lenses because of its projecting front element. dunk Quote Link to post Share on other sites More sharing options...
lct Posted October 12, 2014 Share #11 Posted October 12, 2014 (edited) Would be an M version of course... You can perhaps see one under a "thin" Tele-Elmarit 90/2.8 in the pic above. Edited October 12, 2014 by lct Quote Link to post Share on other sites More sharing options...
jaapv Posted October 12, 2014 Share #12 Posted October 12, 2014 May I ask why? I can't think of a reason besides a small size for not just getting a cheap Nikkor and adaptor. You'd still be needing live view with an extender and there's going to be an optical quality trade off. May as well get an adapted lens for the same money, unless space really is vital. Gordon No, with the Komura adapter you have RF coupling and you get an adjustable viewfinder. As you lose one stop in speed it is possible to get focus. Image quality is quite acceptable. Read the thread linked to above Quote Link to post Share on other sites More sharing options...
roydonian Posted October 12, 2014 Share #13 Posted October 12, 2014 My experience with the Komura Telemore 95 extender is that the lens needs to be stopped down by one or two two stops to get acceptable results, and there is significant distortion towards the edge of the frame that cannot entirely be eliminated in PhotoShop. Some lenses, such as the 90 mm Elmarit, are very prone to flare when teamed with the extender. 1 Quote Link to post Share on other sites More sharing options...
bocaburger Posted October 12, 2014 Share #14 Posted October 12, 2014 (edited) My problem with the Komura 2x wasn't as much IQ as the rangefinder coupling. I tried several and all were inconsistent. My final copy I still own, the rangefinder coupling had been removed from it before I got it, which is probably why I was the only bidder on it and won it for $25. I used it behind the lens head of a 135/4 on a 16464 short focus mount on a Visoflex. Nowadays it's much more usable thanks to the EVF, but now the optical quality has begun to be an issue. I find that I get as good or better results by cropping 50% than by using the teleconverter. Part of that is no doubt due to being able to shoot 2 shutter speeds faster (4 if I consider I should really stop the lens down from max. aperture to use the best part of the teleconverter's image circle). Edited October 12, 2014 by bocaburger Quote Link to post Share on other sites More sharing options...
algrove Posted October 12, 2014 Share #15 Posted October 12, 2014 So right now the best alternative is to buy a T and use long M lenses on it to get the 1.5 "extension". Or use T+M+R adapters to give 150% on those lenses too. Then you have to live with APS-C images. Quote Link to post Share on other sites More sharing options...
FlashGordonPhotography Posted October 12, 2014 Share #16 Posted October 12, 2014 So right now the best alternative is to buy a T and use long M lenses on it to get the 1.5 "extension". Or use T+M+R adapters to give 150% on those lenses too. Then you have to live with APS-C images. I use a Soy a6000 plus M adaptor. Same resolution as the M too. Fantastic little camera. Personally I'd raather than than a teleconverter in my bag. Very intresting about the coupled extender however it seems to be the same compromise as any other brand. Personally I've usually found them a pain to use. I had a Canon 1.4x for 15 years. I think I used it 5 times. Not my cup of tea, although I do understand why others value them. Gordon Quote Link to post Share on other sites More sharing options...
bocaburger Posted October 13, 2014 Share #17 Posted October 13, 2014 Most people I know, including me, use telextenders mainly with fast telephoto lenses. Carrying a 1.4x is a lot more convenient than carrying a 300/2.8 and 400/4, or 600/4 and 800/5.6. And I don't really see the point in using an APS-C camera where the pixel count/pitch is the same or nearly the same as a full-frame cropped to APS-C size. Quote Link to post Share on other sites More sharing options...
lct Posted October 13, 2014 Share #18 Posted October 13, 2014 I know at least one penson who's unable to compose with cropping in mind. Quote Link to post Share on other sites More sharing options...
algrove Posted October 13, 2014 Share #19 Posted October 13, 2014 I use a Soy a6000 plus M adaptor. Same resolution as the M too. Fantastic little camera. Personally I'd raather than than a teleconverter in my bag.Gordon "Same resolution as the M too" Now I am not doubting this sentence only trying to learn about the A6000, but how is this true? Thanks. Quote Link to post Share on other sites More sharing options...
roydonian Posted October 14, 2014 Share #20 Posted October 14, 2014 I find that I get as good or better results by cropping 50% than by using the teleconverter.. I'm working on an article on the Komura Telemore for the LHSA viewfinder magazine. I've made a few experiments which suggest that you are right, but I need to do more tests. Quote Link to post Share on other sites More sharing options...
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