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Carl Zeiss Jena Documar 2.8/35mm question
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PostPosted: Tue Feb 27, 2018 9:36 am    Post subject: Carl Zeiss Jena Documar 2.8/35mm question Reply with quote
Hi forum members,

I saw a CZJ Documar 2.8/35mm for sale on a Chinese site, but I could not find any information about it. Such as produciton numbers,original price,technical specifications,etc. I have seen some Chinese document duplication lenses that performed very well.That is why I am interested in this lens assuming it could do equally well. The list price is in hundreds of US dollars.
If anyone knows more about it, please share with us. I will appreciate you help.

Cheers,

Zhang



PostPosted: Wed Feb 28, 2018 2:13 pm    Post subject: Reply with quote
It helps when you search for the correct name, Dokumar with a K, as you can read on the lens. On Klaus's site for instance:


http://www.macrolenses.de/ml_detail.php?ObjektiveNr=273


PostPosted: Wed Feb 28, 2018 3:37 pm    Post subject: Reply with quote
It is a lens for micro reproduction purposes ("micro fiche") made by Zeiss Jena.
Indeed, some data and images may be found on my macrolenses site. Usually
those have no variable aperture and fit those Dokumator machines once made for.
I have a few sitting since years unused in my collection.... Wink


PostPosted: Wed Feb 28, 2018 4:29 pm    Post subject: Reply with quote
Yes. The lens has no aperture. The one show on the photo is installed on another barrel or only the ID ring.


PostPosted: Thu Mar 01, 2018 4:23 pm    Post subject: Reply with quote
calvin83 wrote:
Yes. The lens has no aperture. The one show on the photo is installed on another barrel or only the ID ring.

Somehow reminds me on Meyer Domiplan.


PostPosted: Fri Mar 02, 2018 1:33 pm    Post subject: Reply with quote
dickb wrote:
It helps when you search for the correct name, Dokumar with a K, as you can read on the lens. On Klaus's site for instance:


http://www.macrolenses.de/ml_detail.php?ObjektiveNr=273


Thanks！ It is my fault. Like 1 small


PostPosted: Fri Mar 02, 2018 1:40 pm    Post subject: Reply with quote
kds315* wrote:
It is a lens for micro reproduction purposes ("micro fiche") made by Zeiss Jena.
Indeed, some data and images may be found on my macrolenses site. Usually
those have no variable aperture and fit those Dokumator machines once made for.
I have a few sitting since years unused in my collection.... Wink


I know that you have a gold mine of rare and expensive lenses. I think I may have the world largest 100x microscope objectives that many would just throw away as junk metals.
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