Leica IIIf - M mount

<p>Hello guys<br>

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.<br>

We just did a few snap shots on a fresh roll and wondering how it the pictures will come up.<br>

Am i being mis-guided to get the screw mounts?<br>

Please advice. Thank you</p>

<p>Thanks in advance</p>

<p><img src="http://lh5.ggpht.com/_Y2wcituU2bc/TTSKmFOIOUI/AAAAAAAAAJ0/-2tOGXkmk_c/s576/photo%201.JPG" alt="" width="430" height="576" /></p>

<p>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..</p>

<p>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.<br /><br /><br />Soeren</p>

<p>Hi Lester<br>

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.<br>

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.<br>

Cheers</p>

<p>oh ok, i got it.<br>

Yes, he's got a M adapter on the M6 body. It's a bloody nice lens, thinking to get one myself too.<br>

Thanks guys!</p>

<p>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.</p>

<p>@MD<br>

Wrong.</p>

<p>Michael A. Shapiro: "@MD Wrong."</p>

<p>Educate me, please.</p>

<p>Mukul, i think Michael is right.<br>

I saw this "near brand new" Ultron 35mm/ 1,7 yesterday, just couldn't help it and took the little orphan home with me.</p>

<p><img src="http://lh6.ggpht.com/_Y2wcituU2bc/TTbq_3ds14I/AAAAAAAAAKE/1bAJZNvNprw/s640/iiif%2Bultron%2BViOOH%204.JPG" alt="" width="478" height="640" /></p>

<p>"There never was a Cosina-Voigtlander 50/2 in screw mount."</p>

<p>This is what I wrote. I stand by it. An Ultron 35/1.7 is <strong>not</strong> a 50/2. Or am I wrong there too? Why don't you people <strong>read</strong> before you let it out? Where is Michael A. Shapiro anyway?</p>

<p>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.</p>

<p>Lester's lens looks like the 50 1.5 Nokton to me. Great lens!</p>

<blockquote>

<p><em>"There never was a Cosina-Voigtlander 50/2 in screw mount."</em><br>

<em>This is what I wrote. I stand by it. An Ultron 35/1.7 is <strong>not</strong> a 50/2. Or am I wrong there too? Why don't you people <strong>read</strong> before you let it out? Where is Michael A. Shapiro anyway?</em></p>

 

</blockquote>

<blockquote>You are wrong there is a 50mm f2.0 in screw mount and it is still currently available.</blockquote>

<blockquote>http://www.cameraquest.com/voigt_502n.htm</blockquote>

<p>I stand corrected. My information was from before 2009, when the only 50/2 in the line was the Heliar Classic in M mount.</p>

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.

<p>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.</p>