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T O P I C    R E V I E W
nightphoto Posted - Feb 18 2008 : 11:51:16 PM
Luiz,

I was looking through the catalog and saw this entry. It is an interesting lens and I would like to know more about it.

Can you tell me why you think this lens has "quick slide focusing" and also if you know it is a KMZ Prototype made for Zenit cameras during the early 1950s, or just think it is. Where did you find this information, or have you seen it yourself?

Maybe Zoom can also help since it is a KMZ lens. I see a listing in the KMZ site but can't find out if it is an aerial lens or made for Zenit.

Regards, Bill

8   L A T E S T    R E P L I E S    (Newest First)
Luiz Paracampo Posted - Feb 22 2008 : 02:12:07 AM
Bill
There are various similar largely known commercial lenses with this system. The first widely known is the Follow focus squeeze pistol by Novoflex for 280/400/600mm. Leica-Visoflex and Leicaflex also adopted this system in their 400 and 800 mm snipers. The other one was the Novoflex Xenar 135mm.
But extraordinary similar to the Telemar 17 where a tube slips with friction into another, are the Astro Berlin Fernbildlinse series with or without external multiplying rods. The same construction were used on the beautiful stove white painted French Kinoptik in the 1950 years.
Regards
LP
nightphoto Posted - Feb 21 2008 : 7:15:51 PM

OK Luiz,
It's not that I don't believe you ... I know you have a lot of experience and knowledge with all kinds of cameras and lenses, which you generously share with us all ... I just don't really understand how the lens and adapter focuses. I just don't see where the movement or place to turn with your hands is. Maybe I would have to hold it to understand. I did see the photo on photohistory.ru and the photos on Molotok before I even asked about it.
So, thanks for your answer.

Regards, Bill

Luiz Paracampo Posted - Feb 21 2008 : 3:15:24 PM
Bill
Going to http://www.photohistory.ru/Aircameralens.html you will see listed, described and pictured this lens. According to the Molotok pictures you will see a large cylinder behind the lens. There is no visible focusing control but a large cylinder behind the lens. This is supposed to be (and clearly denotes to be) a friction (not original) type focusing. Of course it is not original but an adaptation made by competent people (in the factory?-or from any competent machinist). I can say, feel and prove, based on my experiences in building such devices at least in the last 40 years.
The shape tells all.
Regards. LP
nightphoto Posted - Feb 20 2008 : 11:52:12 PM

Thanks Luiz,
I saw it on Molotok, but in the description there it does not say it has "slide friction focusing" and I don't see where that can be. Also, there is a photo of it with a factory paper label on the adaptor, so I don't think the adaptor is homemade.
Why do you think the adaptor is homemade? and On which part of the adaptor is the "slide focusing". Just asking because I can't see it.



Regards, Bill

Luiz Paracampo Posted - Feb 20 2008 : 8:34:00 PM
This is an aerial camera lens with a special coupling tube with slide friction focusing (Home made) for coupling the lens in a M39 Zenit camera. This lens was sold at Molotok.ru the Russian ebay.
Kind regards.
Luiz
Zoom Posted - Feb 20 2008 : 08:59:30 AM
quote:
Originally posted by nightphoto


Would I be correct to think that there is no "quick slide focusing" on this long strange adapter for M-39, and so it would only focus at infinity.
Also, (sorry for so many questions) do you think that this adapter is made to use such lenses with Zenit-1 and other early Zenit models with M-39 mount? ... or for Zorki rangefinders ?


I don't know, I only see this lens pictures in this site catalog...
Using the Telemar-17 (F'=400 mm!) with a RF-cameras is not good idea, I should say... :)
nightphoto Posted - Feb 19 2008 : 2:17:01 PM

Thanks Zoom! Now I see it was made as a "Special" aeronautical lens.

Would I be correct to think that there is no "quick slide focusing" on this long strange adapter for M-39, and so it would only focus at infinity.

Also, (sorry for so many questions) do you think that this adapter is made to use such lenses with Zenit-1 and other early Zenit models with M-39 mount? ... or for Zorki rangefinders ?

Thank you for... "Designed in 1948 by D. Volosov's group in GOI."



Regards, Bill

Zoom Posted - Feb 19 2008 : 06:39:37 AM
quote:
Originally posted by nightphoto

I see a listing in the KMZ site but can't find out if it is an aerial lens or made for Zenit.


According http://www.zenitcamera.com/catalog/lenseslist.html
this was a 'special', read there: the aerophotographic lens.
It frame size = 13x18 cm.
This lens is too heavy (more than 2 kg) to using with a comsumer cameras... And too ugly with a so long adapter to M39x1/45.2 screwmount ;)
Designed in 1948 by D. Volosov's group in GOI.

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