chrismuc Posted December 31, 2013 Share #1 Posted December 31, 2013 Advertisement (gone after registration) A few days ago a friend of mine showed me his legacy SLR and lens and I couldn't believe my eyes: He completely disassembled two lenses: a Leica R 50f2 Summicron lens and a Nikon 50f1.8 AF. He took only the internal lens group of the Leica lens and mounted it in perfect position into the stripped down lens barrel of the Nikon lens. So the Nikon AF drives the Leica glass within the Nikon lens and also uses the remained Nikon auto aperture. Works perfectly on his also legacy Kodak DCS Pro SLR/n:-) 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! 2 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/219338-leica-r-50f2-summicron-af/?do=findComment&comment=2498833'>More sharing options...
Advertisement Posted December 31, 2013 Posted December 31, 2013 Hi chrismuc, Take a look here Leica R 50f2 Summicron AF (!). I'm sure you'll find what you were looking for!
k_g_wolf ✝ Posted December 31, 2013 Share #2 Posted December 31, 2013 Excellent job. If it would be April 1st I would instantly know what to think. Now I decided to believe your lens conversion story. Best GEORG Quote Link to post Share on other sites More sharing options...
sc_rufctr Posted December 31, 2013 Share #3 Posted December 31, 2013 Hmmm... I'm trying to visualise how difficult it would be to build such a lens not to mention the equipment you'd need. If it's real then well done to your friend. Quote Link to post Share on other sites More sharing options...
chrismuc Posted December 31, 2013 Author Share #4 Posted December 31, 2013 Believe me, it's real. I am German, but the camera and lens belong to a Chinese friend in Guangzhou and there are several Chinese photography guys talented in doing unusual lens conversions. 2 Quote Link to post Share on other sites More sharing options...
chrismuc Posted December 31, 2013 Author Share #5 Posted December 31, 2013 Actually I did another weird thing: Took a Leica (Schneider) R 28f2.8 PC lens, machined away the complete shift mechanism, added a Contax 645 mount in order to use it on a Contax 645 body with MF digital back. The 62mm image circle of the PC lens nearly covers the 54x40mm sensor giving a 19mm 135 format field of view. 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! 2 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/219338-leica-r-50f2-summicron-af/?do=findComment&comment=2498860'>More sharing options...
andybarton Posted December 31, 2013 Share #6 Posted December 31, 2013 This is really interesting. Great to see people doing different things. Quote Link to post Share on other sites More sharing options...
sc_rufctr Posted January 1, 2014 Share #7 Posted January 1, 2014 Advertisement (gone after registration) Believe me, it's real. I am German, but the camera and lens belong to a Chinese friend in Guangzhou and there are several Chinese photography guys talented in doing unusual lens conversions. Don't get me wrong... If this is indeed real then well done to your friend. What really puzzles me is the use of the "Nikon auto aperture" mechanism with the Leica lens group. That would be very difficult to engineer. EDIT: I do like you PC lens conversion. Quote Link to post Share on other sites More sharing options...
chrismuc Posted January 1, 2014 Author Share #8 Posted January 1, 2014 I will ask him how he did with the auto aperture. I assume it was impossible to change the position of the aperture in the Nikon lens, so it was pure luck that there was no interference with the Leica glass while ensuring that the Leica lens element was in perfect position to allow infinity and allow the af focus shift range to work properly. Such lens surgery only can work with lenses without floating elements and the "mother lens (af)" must have same or larger aperture than the lens element to be implemented to provide enough space in its "belly". Quote Link to post Share on other sites More sharing options...
mmradman Posted January 14, 2014 Share #9 Posted January 14, 2014 I will ask him how he did with the auto aperture. I assume it was impossible to change the position of the aperture in the Nikon lens, so it was pure luck that there was no interference with the Leica glass while ensuring that the Leica lens element was in perfect position to allow infinity and allow the af focus shift range to work properly. Such lens surgery only can work with lenses without floating elements and the "mother lens (af)" must have same or larger aperture than the lens element to be implemented to provide enough space in its "belly". Fascinating thread, I would love to see some more. Could you kindly link your thread to one I started earlier with a hope to pool all conversion information. http://www.l-camera-forum.com/leica-forum/leica-m-lenses/265496-show-us-your-conversion-adaptation.html Quote Link to post Share on other sites More sharing options...
Hugh 38 Posted January 14, 2014 Share #10 Posted January 14, 2014 I think it is great there are people doing varios conversions , adaptations etc so we can keep on using our high quality lenses etc , rather than having to throw them out because they are old fashioned. Well done to the inovators ! 2 Quote Link to post Share on other sites More sharing options...
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