Leica IIIf - M mount

Discussion in 'Leica and Rangefinders' started by nglester, Jan 17, 2011.

  1. Hello guys
    I thought the older Leica screw mount series can't use any of the M Bayonet lenses. I just tried out a friend's Voigtlander f2 50mm M mount and it screwed onto my iiif without a problem.
    We just did a few snap shots on a fresh roll and wondering how it the pictures will come up.
    Am i being mis-guided to get the screw mounts?
    Please advice. Thank you
    Thanks in advance
    [​IMG]
     
  2. SCL

    SCL

    M mount lenses don't screw into anything...they bayonet in. You were probably using one which was a screw mount version fitted to a LTM screw->M mount adapter with the adapter removed. I do the same thing with my VC 15/f4.5 Super-wide Heliar ASPH depending on which camera I use it with: plain for LTM, attach the adapter for the M bodies..
     
  3. That's because that particular Voigtlaender lens is actually not M Mount, but Leica Screw (or "LTM"). To make it work on an M, you need a screw-on adapter that "adds the bayonet". Today, Voigtlaender primarily makes M-mount lenses, where you cannot unscrew the bayonet, so to speak.


    Soeren
     
  4. Hi Lester
    The M-bayonet lens mount-to-film distance is 27.8mm, whereas the screw mount-to-film distance is 28.8mm. It is impossible to fit a M-bayonet lens to a screw mount camera and keep the lens in focus registry. I suspect that your friend's lens is a screwmount lens fitted with M-bayonet adapter. Remove the adapter and you have a normal screwmount lens.
    By the way, the lens in your picture is a Nokton, which is a F/1.5 lens. This lens was made in screwmount (maybe only screwmount) according to Cameraquest.com.
    Cheers
     
  5. oh ok, i got it.
    Yes, he's got a M adapter on the M6 body. It's a bloody nice lens, thinking to get one myself too.
    Thanks guys!
     
  6. Lens has to be a 50/1.5 Nokton, which was made only in screw mount. There never was a Cosina-Voigtlander 50/2 in screw mount.
     
  7. Michael A. Shapiro: "@MD Wrong."
    Educate me, please.
     
  8. Mukul, i think Michael is right.
    I saw this "near brand new" Ultron 35mm/ 1,7 yesterday, just couldn't help it and took the little orphan home with me.
    [​IMG]
     
  9. "There never was a Cosina-Voigtlander 50/2 in screw mount."
    This is what I wrote. I stand by it. An Ultron 35/1.7 is not a 50/2. Or am I wrong there too? Why don't you people read before you let it out? Where is Michael A. Shapiro anyway?
    I have an Ultron 35/1.7: and it is hardly "little". Look at a Summaron 35/3.5 if you want to see what I mean.
     
  10. Lester's lens looks like the 50 1.5 Nokton to me. Great lens!
     
  11. "There never was a Cosina-Voigtlander 50/2 in screw mount."
    This is what I wrote. I stand by it. An Ultron 35/1.7 is not a 50/2. Or am I wrong there too? Why don't you people read before you let it out? Where is Michael A. Shapiro anyway?
    You are wrong there is a 50mm f2.0 in screw mount and it is still currently available.
    http://www.cameraquest.com/voigt_502n.htm​
     
  12. I stand corrected. My information was from before 2009, when the only 50/2 in the line was the Heliar Classic in M mount.
     
  13. Yea Robin, the lenses are amazing.
    The silver one is the 35mm 1.7 ultron. The 50mm 1.5 is the black one. Both amazing lenses, just did a test roll.

    Mukul. I just thought you said the 50/2 is the only that I can get.
     
  14. Lester, please read what I wrote. With the out-dated information I had, I thought that there was no C-V 50/2 in screw mount. I was wrong, as we see from the link that James Cooke gave. We see, though, that before the 2009 nickel "limited edition" Heliar there was no 50/2 in screw mount. For some while I had a Heliar Classic 50/2 (M mount); and I nearly bought a 50/1.5 Nokton before settling for an M-Hexanon 50/2. My wide-angle is an Ultron 35/1.7. Just to show that up to a point in the past I was not so ignorant.
     

Share This Page

1111