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Zeiss Protar



 
 
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  #1  
Old October 6th 04, 05:58 PM
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Default Zeiss Protar

I published some info about the Zeiss Protar under

http://www.geocities.com/westontina/protar/index.html

Have a look and let me know.

Ed.

  #2  
Old October 7th 04, 09:42 AM
brian
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wrote in message ...
I published some info about the Zeiss Protar under

http://www.geocities.com/westontina/protar/index.html

Have a look and let me know.

Ed.


Interesting collection of info. Two additional U.S. Patents you
should add are 444,714 (1891) and 895,045 (1908). Both of these
pertain to the original "single" Protar. There are also many Protar
designs published in the Zeiss Index, but this is a fairly obscure
resource.

Of course, no treatise on the Protar would be complete without
mentioning that it, and not the Cooke triplet, is the direct
predecessor of the Tessar design. This is perhaps the most important
and certainly longest-lasting aspect of the Protar design form.

Brian
www.caldwellphotographic.com
  #3  
Old October 8th 04, 09:51 PM
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brian wrote:


Interesting collection of info. Two additional U.S. Patents you
should add are 444,714 (1891) and 895,045 (1908). Both of these


Thank you for your feedback. I am very pleased that this info can be
useful after all. I am aware that some images are not as good as they
should be and have seen one dead link. I hope to correct these
imperfections soon.

Ed.
~
 




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