Leica screw mount focusing tube? Leica Helicoid?

Craig Gerard · Post by **Craig Gerard** » Sun Jan 30, 2011 8:03 pm

Leica screw mount focusing tube?

Leica Helicoid?

M39 at camera end. M42 at glass end.

Is anyone familiar with this piece?

Craig

OzRay · Post by **OzRay** » Sun Jan 30, 2011 9:22 pm

The barrel is part of the lens designed for the Leica Visoflex system (converts the Leica rangefinder to an SLR), a lens front element would screw into the front of the focusing tube. My Leica 135mm f4 Tele-Elmar front barrel unscrews for use with the Visoflex system, so you get a lens system and an empty barrel just like shown. How it all actually works, is now clear to me, but what lens that particular barrel came from, I'm not sure, but it looks like a Hector lens (probably 135mm).

Ah! Here are some photos that show the Tele-Elmar, the front element and with it attached to the Visoflex system:

http://www.stevehuffphoto.com/2010/02/1 ... shwin-rao/

http://photo.net/leica-rangefinders-for ... n?start=10

Cheers

Ray[/img]

Eric F · Post by **Eric F** » Sun Jan 30, 2011 11:29 pm

Craig,

Here is a Leica 135mm Elmar/ Hector type lens that looks like your item: see. I thought that a Visoflex was a type of reflex mirror setup, used to give a Leica Rangefinder an SLR-type ability. (Unfortunately, I've never been able to handle any of these Leica gems -- I only know of them from photos in books & internet, so I may be off-base here...)

Eric

Craig Gerard · Post by **Craig Gerard** » Sun Jan 30, 2011 11:30 pm

Ray,

Thanks for the info and other details.

So it's a focusing helicoid with a permanent extension attached? Should also be handy for other purposes.

Could not resist the asking price.

Here is the item purchased:
http://cgi.ebay.com.au/ws/eBayISAPI.dll ... 0523643784

*Eric, just saw your post, reading now........Yes, you are right on target!

Another piece of the configeration Ray mentioned is also listed by the seller in your link:
http://cgi.ebay.com/Leica-Universal-Foc ... 0536595422

Craig

ChrisLilley · Post by **ChrisLilley** » Mon Jan 31, 2011 2:10 am

Craig Gerard wrote:So it's a focusing helicoid with a permanent extension attached? Should also be handy for other purposes.

Could not resist the asking price.

Looks like a handy bit of kit at a great price.