Mounting Screw Mount Lenses

Discussion in 'Collector's Corner' started by wjk, Jan 13, 2007.

  1. wjk

    wjk TPF Noob!

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    Hello---any tips on the best way to mount Leica/Canon screw mount lenses?---ie, best way to align the threads etc.--Thanks.
     
  2. Torus34

    Torus34 No longer a newbie, moving up!

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    "Gently, Brother, gently, pray!"

    [from The Rubaiyat of Omar Khayyam, 37th verse, 3rd edition. Fitzgerald.]
     
  3. Jeff Canes

    Jeff Canes No longer a newbie, moving up!

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    Sorry, but that oddest question ever or you left something out.:???:

    Leica L39 mount is and was used by several different camera companies including Canon. Most L39 lens should work on any camera with the L39 mount. It’s a tread and you simply tread it on. That’s it. If the lens or camera has been cross-thread they will need repairing.

    Now if you want to use these lenses on a camera without the L39 mount. You will need to get a lens adapter. In the US http://cameraquest.com/ is a good place to start and then Ebay
     
  4. Jeremy Z

    Jeremy Z No longer a newbie, moving up!

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    When you first start to mount the lens, turn it counter-clockwise slowly until you hear/feel it 'click' just a bit. This means that the beginning of the threads are lined up, and there is much less chance of cross-threading that way.

    This works on ALL threads, not just screw mount lenses. It is especially effective when something is threaded into a soft material, like plastic or wood, and you don't want to cross-thread it and start new threads; it gets weaker each time.

    But still, be gentle. ;)
     
  5. Mitica100

    Mitica100 Moderator Staff Member Supporting Member

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    All good advices! ;) However, I never had a problem aligning the threads with Leicas or Canons. They are so well made that it's practically impossible to mis-align them. Follow Jeremy's advice and you should never have a problem.
     
  6. usayit

    usayit No longer a newbie, moving up!

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    Same advice I use for bolts and nuts in general. Ever cross thread a spark plug into an aluminum engine??
     

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