Pentax 18-135 lens problem

Discussion in 'Pentax Lenses' started by smoke665, Apr 20, 2018.

  1. smoke665

    smoke665 TPF Supporters Supporting Member

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    After almost 5 months of use my new to me 18-135 lens suddenly started giving me problems. Every so often it's like it loses connection with the camera. AF won't work, and menus act funky. Sometimes I can take the lens off and reattach and it will work fine. Sometimes I have to remove the battery. Only lens I have problems with. Any clues.


     
  2. Fujidave

    Fujidave Blue eyed and Beautiful

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    Could it be the contacts need a clean ?
     
  3. smoke665

    smoke665 TPF Supporters Supporting Member

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    Just did that, so far seems to have helped. Will find out.
     
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  4. Fujidave

    Fujidave Blue eyed and Beautiful

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    Fingers crossed it stays fine.
     
  5. smoke665

    smoke665 TPF Supporters Supporting Member

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    Yeah really. The internal DC drive on this lens has had a few problems. I really like how quite and fast the focus is. Would hate to lose it as a walk around.
     
  6. Derrel

    Derrel Mr. Rain Cloud

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    This site recommends a Tamron-designed Pentax 18-250mm zoom as a better performer, with a wider zoom ratio and better optics. Pentax SMC-DA 18-135mm f/3.5-5.6 ED AL [IF] WR - Review / Lens Test - Sample Images & Verdict

    I have a feeling that the lens has a loose connection somewhere, hence the erratic malfunctioning. Modern AF zoom lenses are complex, and this review suggests that the insides of this design are densely-packed. Since it's been only five months, there's probably been some type of assembly error or QC issue that has affected your example of the lens. If you have warranty service as an option, I think I'd take them up on that and have the lens checked out and brought back up to full spec. While it's totally fine to keep fingers crossed that the lens continues to perform well enough, it sounds to me like a more serious failure could easily occur.
     
  7. smoke665

    smoke665 TPF Supporters Supporting Member

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    Unfortunately I bought the lens used, so the 5 months is only the time I've owned it. I did a thorough cleaning of the contacts, both on the camera and the lens. So far today no problems.
     

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