Archived posting to the Leica Users Group, 2007/06/23

[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]

Subject: [Leica] 'cron 50mm DR on M8
From: len-1 at comcast.net (Leonard Taupier)
Date: Sat Jun 23 12:56:56 2007
References: <5.1.0.14.2.20070623000603.00bdbb40@mail.2alpha.com> <B93CAC88-A478-4FC6-9575-C95ACA46B9C3@btinternet.com> <AA23CB5C-1D58-4A6A-AC3E-F207B8F1AC87@cox.net> <8FD3092E-2050-4AE2-BD48-5765208481B7@btinternet.com> <02165062-CB1F-4BB3-BEB9-8BE70067226E@cox.net> <D4F300C1-640A-49AC-9966-B5FAB7B2EF1E@comcast.net> <DD000D8B-BC54-4D1F-A88B-FBCF13A76BE7@cox.net>

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


In reply to: Message from pklein at 2alpha.net (Peter Klein) ([Leica] 'cron 50mm DR on M8)
Message from Frank.Dernie at btinternet.com (Frank Dernie) ([Leica] 'cron 50mm DR on M8)
Message from kididdoc at cox.net (Steve Barbour) ([Leica] 'cron 50mm DR on M8)
Message from Frank.Dernie at btinternet.com (Frank Dernie) ([Leica] 'cron 50mm DR on M8)
Message from kididdoc at cox.net (Steve Barbour) ([Leica] 'cron 50mm DR on M8)
Message from len-1 at comcast.net (Leonard Taupier) ([Leica] 'cron 50mm DR on M8)
Message from kididdoc at cox.net (Steve Barbour) ([Leica] 'cron 50mm DR on M8)