HELP! Which camera mount does this lens have?

[raid]

Hi.
I need your help to quickly figure out which camera this lens is for.
It is a Zeiss Jena Sonnar 7,5cm 4 ... in some mount.
Is it for Exakta? Nettax? Tenax II?

What is your opinion?

Thanks.

 

[raid]

The lenses for the Tenax II and for the Nettax had such VF eye.

The Nettax had these lenses:

Carl Zeiss Jena 5cm f/3.5 Tessar standard lens;
Carl Zeiss Jena 5cm f/2.8 Tessar standard lens;
Carl Zeiss Jena 10.5cm f/5.6 Triotar tele lens.


The Tenax II had these lenses:
Carl Zeiss Jena 4cm f/2 Sonnar standard lens
Carl Zeiss Jena 4cm f/2.8 Tessar standard lens
Carl Zeiss Jena 2.7cm f/4.5 Orthometar wide-angle lens
Carl Zeiss Jena 7.5cm f/4 Sonnar tele lens


You would think that since the Tenax II has a 7.5cm 4 lens that this is that lens, but the seller said it is not for the Tenax.

 

[raid]

Mike Elek is an expert with such lenses, and he is unsure about it all.
He thinks that the lens could have a custom mount.

The "eye" is done in black whereas all photos I found on such lenses with eyes show the eye in chrome.

 

[sevo]

I agree, that is no Tenax lens - the prism tab on the Tenax lenses resembles that on contemporary Super Ikontas and is tangentially attached, this affair seems to be much bigger and is central. Is it a Zeiss RF prism at all, or is that some kind of viewfinder (magnifying) lens?

As to the Nettax: Never had one, but going by online pictures the mechanism was the same, again with a tangential arm.

 

[raid]

I noticed the shape of the arm too.
What could it be?

Maybe it is a custom made lens, as Mike has suggested.
The 7,5cm 1.5 has lots iof information on it, but there is no 7,5cm 4 lens that I can find other than the one for the Tenax II. Could it be a lens made for Tenax II but then adapted for another camera?

Not many RF cameras have such eyes.

 

[raid]

I see a distance scale for 1m and up to infinity. Is there a second distance scale for close focus?

 

[raid]

The "original" 7,5cm lens for the Tenax looks like this here.

 

[raid]

Where did Gumby's posting go?

 

[Sonnar Brian]

It might be for a Movie Camera. I seem to remember that this lens was available in a movie camera mount.

 

[raid]

It might be for a Movie Camera. I seem to remember that this lens was available in a movie camera mount.

Hi Brian,
Since you are our RFF Mad Scientist, do you think that this lens could be adapted to be useful somehow?