tdavis Posted September 22, 2013 Share #21 Posted September 22, 2013 Advertisement (gone after registration) On the wiki Serial Nos. list the info in (parentheses) like (SFK-DR-chrom) was/is added to Puts data when I find at least one lens in a batch of that type for sale. I think Luigi+others have said is, if a 50-DR occurs in batches 2278751-2279750 and 2356301-2358300 (or other higher batch), then that lens would be built with 7 elements rather than 6. Perhaps we should add "and 7 /4 (DR)" to Number of lenses /groups in the Summicron (II) data? Also, do we agree that 2269251-2270250 batch is the first for Summi (II)? And what is the difference between 11 817-black - 11 819-black and 11 318 (DR) - 11 918 (DR) ? Thanks, Tim Link to post Share on other sites More sharing options...
Advertisement Posted September 22, 2013 Posted September 22, 2013 Hi tdavis, Take a look here Late Build Dual Range 50mm question (1969). I'm sure you'll find what you were looking for!
TomB_tx Posted September 22, 2013 Share #22 Posted September 22, 2013 And what is the difference between 11 817-black - 11 819-black and 11 318 (DR) - 11 918 (DR) ?Thanks, Tim My 11817 purchased in 1969 is from 1968 production, and is the newer anodized aluminum 6-element version. In 1969 you could also get the 11117 black Summicron, which was the black version of the older "rigid" mount lens (11118). Both were then the same price ($171). Link to post Share on other sites More sharing options...
tdavis Posted September 23, 2013 Share #23 Posted September 23, 2013 Thanx TomB, Now you've identified another 50summi order no. 11117 :-) will the complexity never cease! Aluminum or plated brass? Summi (II) were aluminum - does anyone know if the late 7/4 DR versions (built during Summi {II} era) were aluminum or chromed brass? Tim Link to post Share on other sites More sharing options...
luigi bertolotti Posted September 23, 2013 Share #24 Posted September 23, 2013 Thanx TomB,Now you've identified another 50summi order no. 11117 :-) will the complexity never cease! Aluminum or plated brass? Summi (II) were aluminum - does anyone know if the late 7/4 DR versions (built during Summi {II} era) were aluminum or chromed brass? Tim Judging from pics, I'd say chrome brass. Link to post Share on other sites More sharing options...
jc_braconi Posted September 24, 2013 Share #25 Posted September 24, 2013 Judging from pics, I'd say chrome brass. and for pure mechanic meaning, I cannot imagine an aluminium alloy metal dove tail for goggle lens coupling... Link to post Share on other sites More sharing options...
luigi bertolotti Posted September 24, 2013 Share #26 Posted September 24, 2013 and for pure mechanic meaning, I cannot imagine an aluminium alloy metal dove tail for goggle lens coupling... Right... Link to post Share on other sites More sharing options...
tdavis Posted September 26, 2013 Share #27 Posted September 26, 2013 Advertisement (gone after registration) Summicron (II) f= 5 cm 1:2 is now revised (also w/ ELCAN lens shown) Link to post Share on other sites More sharing options...
sabears Posted September 26, 2013 Share #28 Posted September 26, 2013 Summicron (II) f= 5 cm 1:2 is now revised (also w/ ELCAN lens shown) Beware: it's true that Elcan opening is up to F.:2, but speaking about the lens design it's not a Summicron, is a different thing in itself. The project was a hybrid/evolution between Elmar and Colorplan: at the end we have an air spaced four elements lens with highly sophisticated glass elements (ex: LaK9, Leitz glass 672460). kind regards. Link to post Share on other sites More sharing options...
luigi bertolotti Posted September 26, 2013 Share #29 Posted September 26, 2013 I agree with sabears : the ELCAN 50 f2, originally designed for the well known KE7A, does not fit within the story of the Summicron... it is a different lens (even if, probably,also it a Mandler design) Link to post Share on other sites More sharing options...
tdavis Posted September 27, 2013 Share #30 Posted September 27, 2013 That explains why its shape is different. Looks like we need to add a page for Leica lens #179 Thnx sabears + luigi Where can I find tech specs for ELCAN 50 f2 Tim Link to post Share on other sites More sharing options...
wizard Posted September 27, 2013 Share #31 Posted September 27, 2013 Where can I find tech specs for #179? Tim As far as I remember, they are listed in the Leica Pocketbook, and may also be mentioned in Erwin Put's book on Leica lenses. Andy Link to post Share on other sites More sharing options...
luigi bertolotti Posted September 27, 2013 Share #32 Posted September 27, 2013 That explains why its shape is different. Looks like we need to add a page for Leica lens #179 Thnx sabears + luigi Where can I find tech specs for ELCAN 50 f2 Tim Lager depicts the vey first one (276-00001) : a four elements design, based indeed on a projector (Colorplan) lens... seems that Summicron was "too good" for US Army specs, so Ontario built a cheaper lens, probably around 300+ were made, sold also in the "civilian" market with the "civilian" KE7A. Link to post Share on other sites More sharing options...
tdavis Posted September 28, 2013 Share #33 Posted September 28, 2013 Name - ELCAN f=2 5 cm 1:2 Leica Order No. - sold w/ KE-7A see M4 Production era - 1972-1974 - 515 lenses Type - This lens came w/ the Leica KE-7A which was supplied to US Military by contract. Only 460 sets were produced for this purpose while another 55 were sold to the public. The lens has only air spaced elements and is thus suitable for extreme use. It has non-cemented glass, less problem in a high temperature range and nearby explosions. Lens mount - M-bayonet Number of lenses /groups - 4 /4 F stop range - f /2 - f /16 Diaphragm setting /type - 10-blade Inscription - ELCAN f/2 50 MM 276-0XXX Designer - Walter Mandler kinda thin - can we add any more? Link to post Share on other sites More sharing options...
tdavis Posted September 30, 2013 Share #34 Posted September 30, 2013 No one has tech specs for ELCAN 50/2? I don't have access to Puts. He's taken down all his old on-line stuff and I don't have Lager's book. Can anyone add Closest focusing distance - Smallest object field - Diaphragm setting /type - Angle of view diagonal - Accessories - Materials - Anodized aluminum, lanthanum infrared-absorbing glass and high refractive optical glass as used for heat control in Leitz projectors. Dimensions (length x diameter) - Weight - -Tim Link to post Share on other sites More sharing options...
TomB_tx Posted September 30, 2013 Share #35 Posted September 30, 2013 There is a KE-7A with Elcan for sale now at KEH. You could just buy it and answer your questions... Link to post Share on other sites More sharing options...
joeswe Posted October 1, 2013 Share #36 Posted October 1, 2013 No one has tech specs for ELCAN 50/2? I don't have access to Puts. He's taken down all his old on-line stuff [...] Time Machine Link to post Share on other sites More sharing options...
luigi bertolotti Posted October 1, 2013 Share #37 Posted October 1, 2013 The closest focus distance of the ELCAN 50 f2 was 2.5 feet (scale was feet only, no surprise....). Here is the optical schema (Courtesy of Marco Cavina) 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! Worth noting that a prototype in collapsible mount was made (Elmar style), with the same formula designation (276) , while another Elcan 50 prototype had a formula identified as "132", and looked more like a standard Summicron 50 fixed mount... maybe an evaluation for US Army tender. Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! Worth noting that a prototype in collapsible mount was made (Elmar style), with the same formula designation (276) , while another Elcan 50 prototype had a formula identified as "132", and looked more like a standard Summicron 50 fixed mount... maybe an evaluation for US Army tender. ' data-webShareUrl='https://www.l-camera-forum.com/topic/212580-late-build-dual-range-50mm-question-1969/?do=findComment&comment=2431963'>More sharing options...
sabears Posted October 1, 2013 Share #38 Posted October 1, 2013 The very important thing to emphasize is that the prototype, which is not like an elmar aesthetically but it is a thing in itself, was made in Germany and not in Canada, indeed it is engraved "Made in Germany" on one side. kind regards. Link to post Share on other sites More sharing options...
luigi bertolotti Posted October 1, 2013 Share #39 Posted October 1, 2013 Found in my archives this pair of pics of the Elcan chrome... don't have the source (maybe an old auction... ) Looks a std. Summicron, indeed... with the removable lenshead as usual. 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! 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/212580-late-build-dual-range-50mm-question-1969/?do=findComment&comment=2432036'>More sharing options...
sabears Posted October 1, 2013 Share #40 Posted October 1, 2013 This is "The thing" (better photographed on J. Lager book for sure!), photographed something like 15 years ago in Usa. Sorry for the quality. A difference with others prototype lenses that were done in some (few) specimens: only this was made, so it's the only in existence. cheers. 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! 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/212580-late-build-dual-range-50mm-question-1969/?do=findComment&comment=2432119'>More sharing options...
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