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  1. #1

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    COntax to LTM Adapter, some samples

    I got the test results back using the Contax to LTM adapter made by Amedeo Muscelli. I am very happy with the results. I tested it using it my Zeiss 5cm F1.5 and Menopta 53/1.8. Both are Contax mount lenses.

    Zeiss 50mm (Edited from 'cm') F1.5, later model that dropped the "Opton" from the name.

    Wide-open on the Canon 7, metered using the camera's selenium meter.



    And with the Menopta 53/1.8 wide-open. This is an export version of the Helios-103.

    Last edited by lens_hacker; 08-12-2007 at 01:38 PM. Click to view previous post history.

  2. #2

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    Just a note. Zeiss lenses marked in cm are prewar and lenses marked in mm are postwar.

    Is this lens a 50mm Sonnar or a 5cm Sonnar?

    While both focal lengths are the same, how they are marked on the lens indicates whether they are prewar or postwar.

  3. #3

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    I just checked- it's in Millimeters. You think they would have labeled it 52mm or 53mm. I'm used to my Nikkors from the same period still being cm. It has the linear F-stop markings, and has a serial number in the 14x range. I've got another Zeiss-Opton in the 10x range and another in the 112x range. They are all sharp.

  4. #4

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    On a slightly different subject, is anyone aware of a Contax lens to M42 adapter? I see ones going the other way, but haven't found any reference to this so far.

    Just curious, as I'd like to try a few of the FSU lenses that are available in LTM and Contax-mount only.

  5. #5
    patrickjames's Avatar
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    You are killing me with this post! I have two Contax to Leica M adapters that required quite a bit of adjustment to make them work. They were both from johnluk. In hindsight I should have bought the ones from Amadeo, but at the time there was absolutely nothing on the internet about the different adapters. I kind of want a LTM adapter now so I can use the lenses with my Canon 7 as well.
    You can read about the adjustment process here-

    http://www.rangefinderforum.com/foru...ad.php?t=43587



    Patrick

  6. #6
    Eric Mac's Avatar
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    Contax adaptor

    I purchased an adaptor from the South American guy and ended up returning it as I couldn't get it to focus close up. Mine was about a foot off. He did take the return though, although he was not too happy. Had I read the further adventures of recalibrating it, I might have taken a chance on it.

    Eric
    Dad, is the lens cap suppose to be on?.

  7. #7

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    It's amazing what 0.5mm will do to the focus of a lens. The difference between a Nikon S-mount lens working on an adapter, and a Zeiss lens working.

    This LTM adapter is pretty amazing. It is thin, but I've had it on/off 10 times already. I'm thinking of leaving it on a Canon 7. Manually selected framelines, metal curtains, and the meter. And I have two of them.

    Just to add: the back-focus for the M42 mount is much greater than the 28.8mm that these lenses are designed for.

    But I did get a Zeiss-Jena preset 50/2.8 Tessar in M-42 mount transplanted into LTM, using the focus mount from an I-61L/D.

    RF COupled, collimated for the Leica. On the Canon 7, wide-open.



    Brian

  8. #8

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    Can someone please give a contact for Amedeo Muscelli as I would like to purchase an adaptor to enable me to use my ZI Contax lenses on my Voigtlanders

  9. #9

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    I think this will work:

    amedeo at muscelli. net

    Eliminate the spaces and change "at" to @.

    Wayne
    Last edited by Wayne R. Scott; 06-19-2008 at 07:55 AM. Click to view previous post history.

  10. #10

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    Since posting these, I've found that the pre-war Carl Zeiss Jena 5cm f2 optics module will fit perfectly into a J-8 mount, and the pre-war 5cm F1.5 Sonnar will fit into a J-3 Mount.



    It's easy to do. I can post some instructions if anyone is interested.

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