Archived posting to the Leica Users Group, 2012/01/17
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Thanks. Yes the eyes must keep the bearing depressed. OK, two eyes, same updated logo one works on a dual scale DR the other doesn't because the receptor is too large. We just need a measurement from an old set of eyes. On Tue, Jan 17, 2012 at 12:17 PM, Maurice M. Greeson <maurice at mckay3d.com>wrote: > My D/R Summicron, #2117016 has the dual scale, ridges in the trough, and a > ball bearing size of 3mm x 1.2mm. I have two sets of eyes with the newer > Leitz Wetzlar logo. One has a receptor size of 3.5mm x 1.4mm, and the > other is 3mm wide x 1.2mm. So, I guess I'll use the eyes with the larger > receptor. Thank You Chris. > P.S..... Whoops! When I tried that the lens wouldn't focus so I guess > the larger, deeper receptor just won't push the ball bearing down far > enough to let the lens focus in the close-up mode. And, I think my > measurements of the depth of the holes might need to be done again..... > > Maurice > > On Jan 16, 2012, at 4:25 PM, Chris Saganich wrote: > > I noticed that according to Steve Gandy's lens guide the eyes of my DR > > shouldn't be compatible with the lens body. The newer DR lenses have a > > dual scale in feet and meters, focus to 20in, and have ridges in the > trough > > of the focus ring knurling. The older DR bodies have a single scale, > focus > > to 19in, have reproduction ratios, and have ridges on the peaks of the > > focus ring knurling. The older bodies are supposed to have a larger ball > > bearing compared to the newer DR bodies making the newer eyes > incompatible > > to the older DR bodies, but the older eyes will work on the newer DR > > bodies. Older eyes have the "condenser" logo and newer eyes have the > Leitz > > Wetzlar logo. According to convention ( which I haven't confirmed) the > > newer eyes shouldn't be compatable on the older DR bodies due to the ball > > bearing size difference. My DR has the new logo and the older body so I > > was curious if I could find any other examples of this anomaly. I > searched > > ebay and the internet for examples where the age of the lens and logo of > > eyes were identifiable. Here is what I found: > > > > 1956- 125,594 lenses made > > 1402xxx Old Body Old Logo > > 1403731 Old Body Old Logo > > 1440268 Old Body New Logo > > > > 1957- 89,389 lenses made > > 1487412 Old Body New Logo > > 1513415 Old Body New Logo > > 15301xx Old Body New Logo > > 1534320 Old Body New Logo > > 1545576 Old Body New Logo > > > > 1958 -97,281 lenses made > > 1587819 Old Body Old Logo -From Cameraquest website > > 1592570 Old Body New Logo - My Lens > > 1623068 New Body New Logo > > > > > > The only exception is from Cameraquest where Steve probably used an old > > example of the eyes for the old body. Who but Steve would have lots of > > these hanging around? > > > > All this suggests that eyes with the newer logo were manufactured with > the > > larger ball bearing receptor for the older DR bodies. > > > > The ball bearing size on my older DR body is 3 mm diameter and 1.8mm > > height. The receptor dimensions on my eyes with newer logo are 3.5 mm > > diameter and 1 mm deep. > > > > It would be interesting if we could fill in these blanks regarding ball > > bearing measurements on the older and newer DR bodies and eyes: > > > > 1) Older DR body: 3mm dia x 1.8mm height > > 2) Eyes with older Logo: ??? > > 3) Eyes with new Logo on older body: 3.5mm dia x 1mm depth > > 4) Newer DR body: ??? > > 5) Eyes with new Logo on New DR body: ??? > > > > The supposition is that the dimensions of1, 2 and 3 should be similar > > while 4 and 5 should be different and smaller. > > > > -- > > Chris Saganich > > www.imagebrooklyn.com > > > > _______________________________________________ > > Leica Users Group. > > See http://leica-users.org/mailman/listinfo/lug for more information > > Maurice M. Greeson > 867 West 2400 South > Syracuse, UT 84075 > > 801-776-5712 > > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information > -- Chris Saganich www.imagebrooklyn.com