I'm using a Nikon D3100 with a Tamron 18-200. I purchased this lens from eBay, it is brand new. The owner says he never used it and kept if for almost 2 years without using it.

At 18mm the lens won't focus, the image is blurry. The centre and right focus points have the same problem; the image is not in focus. When I try to focus from the left focus points it is fine. Using manual focus resolves the issue. And at other focal lengths, the focus seems to be sharp.

My 18-55mm kit lens works fine with my camera.

I have tried,

  • Turning the camera off, removing the battery and restarting.
  • Removing any filters from the lens.
  • Checked the lens's front and back elements are crystal clean.
  • Removed and remounted the lens to make sure it's properly seated.
  • Turned auto/manual focus on/off.
  • Resetting the camera settings.
  • Cleaned AF contact points, both on body and lens.

What do you think is the issue here? Can a lens calibration be done? Is my camera body not working with the lens?

  • 1
    What is the exact model name of the lens? This is important when talking about Nikon AF issues, as some lenses for the Nikon F-mount have AF motors in the lens and some depend on an AF motor in the body.
    – Michael C
    May 28 '21 at 6:46

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