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Nikon-zoom problem

Discussion in '35mm Cameras and Accessories' started by Blighty, Feb 27, 2009.

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  1. Feb 27, 2009 #1
    Blighty

    Blighty Member

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    Fellow Apuggers,
    My Nikon 20~35 f2.8 zoom has developed a problem. Just to familiarise you with this lens; it employs a manual/autofocus button on the lens. Once AF has been selected on the camera body, AF can be engaged/disengaged on the lens as necessary. Whilst using AF, the focus ring rotates freely. Trouble is, after using AF and returning the lens to manual , the focus ring doesn't 'pick-up' the focus gear inside and continues to rotate freely. After turning the focus ring for some time - first one way and then the other - it will eventually re-engage, but it seems to be getting worse and taking longer each time I use it. Curiously, it seems to be more troublesome when it's cold. Any thoughts? Many thanks, B.
     
  2. Feb 27, 2009 #2
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    Blighty

    Blighty Member

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    Sorry, I just realised I shoud have posted this on the repair, cam mod bit.
     
  3. Feb 27, 2009 #3
    archphoto

    archphoto Member

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    It sounds like a lubrication problem, hopefully, than just a CLA will do the trick.
    As grease (and oil) gets older it becomes more sticky.
    When you put your lens into AF it dis-enganges the connection between the ring and the real focussing mechanism.
    When you put it into MF again it should engage quickly again.

    Peter
     
  4. May 3, 2009 #4
    nicefor88

    nicefor88 Member

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    I agree, send it to service, it's not a big problem. I had a similar problem with a nikkor zoom but it seems a plastic part was the culprit. Darn plastics! It makes lenses lighter, all right, but they are so annoying...
    :mad:
     
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