Lens stops autofocusing sporadically

bandgeekndbbandgeekndb Registered Users Posts: 284 Major grins
edited October 20, 2009 in Cameras
So, I'm using my Sigma 70-200 f/2.8 with my Nikon D90, and I've been running into the problem where the lens will stop autofocusing when I half-press the shutter, the way it should. Normally, I turn the camera off, turn it back on, if that doesn't fix it, i make sure the lens is reseated, and sooner or later, it starts working again. I missed a lot of great shots this weekend because of this, so I'd like to get it fixed asap!

So, what are my steps to troubleshooting here? :dunno I've heard of tricks like the eraser to the lens contacts, etc. but never in detail. Somebody mind explaining tips like that? And sorry if I missed a tutorial somewhere that explains this!

Thanks!
~Nick
Nikon D7000, D90

Sigma 18-50 f/2.8, 70-200 f/2.8
Nikkor 55-200mm f/4-5.6, 50mm f/1.8

Comments

  • MitchellMitchell Registered Users Posts: 3,503 Major grins
    edited October 19, 2009
    It does sound like an issue with your contacts. You can clean these contacts with an eraser. I usually just clean mine with a lens cloth if needed.
    Mitch
    http://clearwaterphotography.smugmug.com/
  • CrossbarphotoCrossbarphoto Registered Users Posts: 89 Big grins
    edited October 20, 2009
    Mitchell wrote:
    It does sound like an issue with your contacts. You can clean these contacts with an eraser. I usually just clean mine with a lens cloth if needed.

    +1

    Exactly! If this doesn't work, you may have bigger issues.
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