cleaning the aperture ring on a M mount

Discussion in 'Leica M and LTM Lenses' started by aaronz28, Dec 17, 2014.

  1. aaronz28

    aaronz28 Leica Place Regular

    63
    Dec 17, 2014
    I recently bought an M3 and am putting it back in loving service -
    the aperture ring is very very very sticky and slow - guessing a previous owner tried oiling it with something they shouldn't have had...

    is there a safe and reliable way for me to clean this? i have access to the small screwdrivers and such - but am basically a novice with the equipment

    i probably should send the whole rig in for a clean and adjustment - but i have no idea who to trust for this...


    thanks in advance
    Aaron
     
  2. asiafish

    asiafish Leica Place All-Pro

    Aug 9, 2013
    Bakersfield, CA
    Andrew
  3. Brian

    Brian Super Moderator Subscribing Member

    Apr 3, 2013
    I would not advise taking the lens apart if you have never done one before, this is an expensive lens to learn on. I learned by taking apart a lot of junk lenses. If someone improperly lubed the lens, it can get into the glass. If this is the case, it is worth sending in for a cleaning. Youxin Ye is reasonable for service, I have used him for many Leica body services.

    http://www.yyecamera.com/price_lens.html

    Now- if it is just grime around the aperture ring, I have used Isopropyl alcohol on a Q-Tip to remove and free things up. I had a Canon 50/1.4 RF lens that just had grime work it's way into the aperture. I just dampended the Q-Tip, worked the aperture ring, wiped the grime away. Feel free to post a picture of the lens.

    and to add, Sherry is one of the best in the world.
     
  4. aaronz28

    aaronz28 Leica Place Regular

    63
    Dec 17, 2014
    ok cool - i'll add some photos tonight!
    Thanks for the help
     
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  5. aaronz28

    aaronz28 Leica Place Regular

    63
    Dec 17, 2014
  6. Brian

    Brian Super Moderator Subscribing Member

    Apr 3, 2013
    It's worth "about" $200~$250 or so, maybe a bit more. Optically it's the same as the 90/4 Coated M-Mount non-collapsible. It cannot be collapsed on the Digital Leica M cameras. Some places try to get much more as it is uncommon, compared with the non-collapsible.

    Before you sell it, use it. The nice thing about the 90mm focal length: it still focuses to 3ft, but you get a much closer view. It's a great and under-appreciated lens. I sold my Thin-Elmarit 90/2.8 and kept this lens.
     
  7. aaronz28

    aaronz28 Leica Place Regular

    63
    Dec 17, 2014
    thanks again Brian!
     
  8. Brian

    Brian Super Moderator Subscribing Member

    Apr 3, 2013
    With mine, wide-open on the M8.

    [​IMG]

    [​IMG]

    the colors are more subtle with the 1950s glass.
     
  9. Brian

    Brian Super Moderator Subscribing Member

    Apr 3, 2013