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primus96
Joined: 13 Nov 2003
Posts: 225
Location: Yorkshire, United Kingdom
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 Posted: Thu Apr 13, 2006 9:43 pm Post subject: |
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I have a lens. It says "Dopp-Anastigmat Series III Dagor F = 150mm f1:6.8 C.P. Goerz Berlin No327380".
Can you get some sort of a date from the serial number of German Dagors?
A pity I dont have a appropriate shutter of the same period to be the new home for the lens. I can live without a flash contact on this one. The crunch is whether a old Compur/Compound can have reasonably accurate slow speeds. I don't use colour reversal, just neg. |
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Dan Fromm
Joined: 14 May 2001
Posts: 2146
Location: New Jersey
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| Posted: Thu Apr 13, 2006 9:57 pm Post subject: |
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| Quote: |
On 2006-04-13 14:43, primus96 wrote:
I have a lens. It says "Dopp-Anastigmat Series III Dagor F = 150mm f1:6.8 C.P. Goerz Berlin No327380".
Can you get some sort of a date from the serial number of German Dagors?
A pity I dont have a appropriate shutter of the same period to be the new home for the lens. I can live without a flash contact on this one. The crunch is whether a old Compur/Compound can have reasonably accurate slow speeds. I don't use colour reversal, just neg.
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According to the very sketchy Goerz chronology presented in the VM, not long after 1912.
Old shutters often run slow when received. Nothing that a CLA can't usually correct. If you were in the US I'd suggest you send it to, for example, Carol Miller at Flutot's Camera Repair. Sorry, I'm not aware of shutter repairmen in the UK, its out of my territory.
The big risk in buying an ancient shutter is that back when your lens was new shutter sizes weren't standardized. |
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45PSS
Joined: 28 Sep 2001
Posts: 4081
Location: Mid Peninsula, Ca.
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| Posted: Fri Apr 14, 2006 5:44 am Post subject: |
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Read this section at SK GRIMES on compound shutters.
http://www.skgrimes.com/compound/index.htm
Try cocking/triping the one you have 3 to 4 times then test speed to see if it becomes more accurate.
Charles
_________________
The best camera ever made is the one that YOU enjoy using and produces the image quality that satifies YOU. |
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primus96
Joined: 13 Nov 2003
Posts: 225
Location: Yorkshire, United Kingdom
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| Posted: Fri Apr 14, 2006 6:03 am Post subject: |
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The lens I have is in a barrel mount at present.
I thought that it would look good in a dial set Compur for example, because it would be of the same period. But only if the chosen shutter would run reliably (after a CLA of course).
Of course i,d have to find a shutter and there's the problem that it may not conform to any standard size.
Given that Grimes would therefore have to machine adapters, perhaps it is better to go for a modern Copal shutter? |
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Dan Fromm
Joined: 14 May 2001
Posts: 2146
Location: New Jersey
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| Posted: Fri Apr 14, 2006 9:56 am Post subject: |
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| Quote: |
On 2006-04-13 23:03, primus96 wrote:
The lens I have is in a barrel mount at present.
I thought that it would look good in a dial set Compur for example, because it would be of the same period. But only if the chosen shutter would run reliably (after a CLA of course).
Of course i,d have to find a shutter and there's the problem that it may not conform to any standard size.
Given that Grimes would therefore have to machine adapters, perhaps it is better to go for a modern Copal shutter?
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This remount can be justified only on sentimental grounds. That is, you should be able to buy a used lens of the same focal length and coverage in working shutter for less than the cost of machining plus a new or overhauled used shutter. |
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