mystery mount

David Lyga

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Can someone DEFINITIVELY tell me what mount this is? It is a 35mm Cerenar lens and the pin at about 12 O'CLOCK is for stopping the aperture down. At about 2 O'CLOCK there is a protruding screw. Thank you. - David Lyga
 

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Alan W

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David,this is one reason why you should have at least one model of every camera mount,ever made-you just never know!Sorry for the lack of help.
 

blockend

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The Petri has three equally positioned 120 degree tangs, which would fit the slots on this lens.
 

Ricardo Miranda

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No, it isn't Petri.
The pin is wrong as it is the tongues.
On the Petri the pin has a sliding movement.
 
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David Lyga

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Yes, Ricardo, the Petri body I already have. Its mount has no pin, only a lever (like on the K mount and many others).

This remains a difficult problem and there has to be someone out there who knows for sure. I have about twelve different mount bodies and none of them mate with this. Keep trying. - David Lyga
 

MattKing

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Can we see the front ring - just in case there is a hint there?
 
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David Lyga

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OK, but I might not get access to a computer (after I take the picture) until Friday!!. Sorry. - David Lyga
 
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David Lyga

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OK, here are more photos. I do know one thing: the mount is NOT Mamiya bayonet, Petri, or Rollei. (I have those bodies and this lens does not fit. Also, I have those lenses and their mounts are different from this mystery mount, although the Rollei is close.)

The third photo shows, again, the stop down pin at 12 O'CLOCK (like on M42).

Why Japan found it so difficult to print the mount name on each lens is utterly and profoundly inexplicable. - David Lyga
 

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Last edited by a moderator:

ciniframe

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Jul 3, 2014
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I think it's a Rolleiflex mount. You know, the SL35 model.

Sorry David, now you got to get a SL35 body.
 

ciniframe

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On second thought I just looked at the back end of a Rolleinar lens and that ain't it. Wow, I'm stumped, what a weird mount.
 

miha

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It's an Exacta (Twin TL) mount.
 

miha

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You are welcome David.
 
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