Archived posting to the Leica Users Group, 2007/06/23
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]The DR and same period Rigid is a 7 element design. The current lens is a 6 element design. There was one other design formula between the two. Len On Jun 23, 2007, at 3:36 PM, Steve Barbour wrote: > > On Jun 23, 2007, at 12:26 PM, Leonard Taupier wrote: > >> Steve, >> >> The experts say the DR and the Rigid made at the same time ( 1956 >> - 1968 ) are the same lens in formula and performance. > > > so I have one further question and we can wrap this up.... > > are they in fact the same optically as the current !! summicron > 50/2 and if not, how are they different... > > > and yes I have read Puts and Gandy, and each time they seem more > confusing, Steve > > >> >> Len >> >> >> On Jun 23, 2007, at 3:20 PM, Steve Barbour wrote: >> >>> sorry Frank... >>> >>> >>> this discussion is getting a little too deep for me... :-) >>> >>> >>> is the cron 50 DR identical to the old rigid cron 50... of that >>> era... >>> >>> >>> or is it identical to the cron 50 which is available today ?... >>> >>> >>> (as people say that the two are different from one another) >>> >>> >>> >>> thanks, Steve >>> >>> >>> On Jun 23, 2007, at 12:11 PM, Frank Dernie wrote: >>> >>>> I mean contemporary with the one you own. >>>> Frank >>>> >>>> On 23 Jun, 2007, at 13:49, Steve Barbour wrote: >>>> >>>>> >>>>> On Jun 23, 2007, at 12:49 AM, Frank Dernie wrote: >>>>> >>>>>> The contemporary >>>>> >>>>> >>>>> thanks Frank... do you mean the contemporary from then or >>>>> now.... ? >>>>> >>>>> >>>>> Steve >>>>> >>>>> >>>>>> rigid Summicron is identical to the DR, apart from the close >>>>>> focus arrangement. If you like the look so much why not get >>>>>> one of those as well? >>>>>> Frank >>>>>> >>>>>> On 23 Jun, 2007, at 08:29, Peter Klein wrote: >>>>>> >>>>>>> Steve: That was me. I had the idea of getting a cheap Rigid >>>>>>> Summicron with bad glass and the correct focal length marked >>>>>>> inside. The DR and Rigid lens heads unscrew from the mounts, >>>>>>> so I thought I could put my DR lens head in the rigid mount >>>>>>> for the M8, and still have the close range on film. I asked >>>>>>> DAG about it, and he said that the mounts were different and >>>>>>> it wouldn't work. But he also said that he could cut off the >>>>>>> close focus part of the cam, and then it would work in the >>>>>>> normal range on the M8. >>>>>>> >>>>>>> The unmodified DR does work in close-focus range on the M8. >>>>>>> I know for sure, because I've tried it. When it's set in the >>>>>>> normal range, the close-focus half of the cam sticks out too >>>>>>> far, and it hits something inside the body when you try to >>>>>>> mount it. I have read about this, and I have decided to >>>>>>> believe it and not try it myself. :-) >>>>>>> >>>>>>> I'm still thinking about whether to have DAG do the >>>>>>> "operation." It will depend on how much I like the 67mm >>>>>>> equivalent length the 50mm turns into on the M8. And whether >>>>>>> I want to desecrate a sacred object. Funny that I feel this >>>>>>> way--I've used the close range all of twice since I got the >>>>>>> lens. But another DR was my first Leica lens, way back in >>>>>>> 1970. I really love how the DR draws, how it's made, how it >>>>>>> feels. And it's a Wetzlar product from the Golden Age. So >>>>>>> I'm reluctant to give the lens a "vasectomy" unless I'd >>>>>>> really use it a lot on the M8. >>>>>>> >>>>>>> Decision postponed while I experiment with my other 50s. >>>>>>> >>>>>>> --Peter >>>>>>> >>>>>>> At 02:29 PM 6/21/2007 -0700, Steve Barbour wrote: >>>>>>>> recall hearing that the cron 50mm DR can be modified, >>>>>>>> so that it can be used on the M8 body... >>>>>>>> maybe that was reported here... >>>>>>>> if someone can substantiate this, and give me details, I'd >>>>>>>> appreciate >>>>>>>> it... >>>>>>>> >>>>>>>> thanks, Steve >>>>>>> >>>>>>> >>>>>>> _______________________________________________ >>>>>>> Leica Users Group. >>>>>>> See http://leica-users.org/mailman/listinfo/lug for more >>>>>>> information >>>>>> >>>>>> >>>>>> _______________________________________________ >>>>>> Leica Users Group. >>>>>> See http://leica-users.org/mailman/listinfo/lug for more >>>>>> information >>>>> >>>>> >>>>> _______________________________________________ >>>>> Leica Users Group. >>>>> See http://leica-users.org/mailman/listinfo/lug for more >>>>> information >>>> >>>> >>>> _______________________________________________ >>>> Leica Users Group. >>>> See http://leica-users.org/mailman/listinfo/lug for more >>>> information >>> >>> >>> _______________________________________________ >>> Leica Users Group. >>> See http://leica-users.org/mailman/listinfo/lug for more information >> >> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information