• Welcome to Photrio!
    Registration is fast and free. Join today to unlock search, see fewer ads, and access all forum features.
    Click here to sign up

Unusual Sonnar mount

Gbigazzi

Member
Allowing Ads
Joined
Mar 22, 2023
Messages
4
Location
Uk
Format
35mm
Hello! Does anybody know what mount this sonnar f2 is for? It came on a cooke & Perkins adapter that had an inner thread to accommodate it..it looks Zeiss to me but I could be wrong
 
Here are more photos, threaded part is 6mm. The cooke and Perkins helical looks like a contax Leica adapter with an internal thread
 

Attachments

  • 385C0A88-89F4-4F40-8B6A-1D563B9F2D8F.jpeg
    86.9 KB · Views: 102
  • C385116D-A2A9-49C2-98CC-56293628E844.jpeg
    62.9 KB · Views: 90
  • EA35371B-2638-4994-B1F3-B6587E23F340.jpeg
    87.2 KB · Views: 87
  • F1E766EA-A2E4-49A7-B9EA-7D4A51778E01.jpeg
    87.2 KB · Views: 94
The lens is pre-WWII made 1938/9, it looks like the Cook & Perkins Helical may be later. There are references to military lenses being remounted in Cook & Perkins focus mounts/helicals for civilian use after the war. It will be difficult to ascertain the original use of the lens.

It does look like the helical may accept the Contax mount Sonnar as well, they aren't normally threaded internally. The company were based in Pembroke Works, London, N10, they made lens barrels etc for Dallmeyer, and Taylor, Taylor, & Hobson (Cooke) as well.

Ian
 
Thanks Ian, yes I have seen a few and I haven’t seen any threaded internally. I tried another sonnar and fits nicely, although it’s missing the locking part.
Could it be a mount for an aerial camera perhaps?
 
Gbigazzi said:
Thanks Ian, yes I have seen a few and I haven’t seen any threaded internally. I tried another sonnar and fits nicely, although it’s missing the locking part.
Could it be a mount for an aerial camera perhaps?
Click to expand...

It should be a Leica screw thread M39 mount. It seems they made all the focus helicals for post WWII lenses from Ross, TT&H, as well as Dallmeyer.

In the period after WWII Import restrictions meant you needed a special licence to Import cameras and lenses into the UK, but many were brought from Germany by service personnel. It was only in 1950 restrictions were lifted.

Ian
 
Indeed it is a m39 thread, maybe cooke & Perkins provided a lens conversion service after the war ? The sonnar mount could be aerial seen as it has no helical or contax bayonet, not sure we’ll ever know for sure
 
You must log in or register to reply here.
Menu
Log in
Register