Mounting Screw Mount Lenses

[wjk]

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

 

[Torus34]

"Gently, Brother, gently, pray!"

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

 

[Jeff Canes]

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

 

[Jeremy Z]

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.

 

[Mitica100]

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.

 

[usayit]

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