Whenever I shake the back side of the lens near my ear, I hear a sound, like something is moving inside the lens. However, it is working properly when mounted. Is this normal?

  • How hard are you shaking the lens, and how loud is the sound? Can you better describe what it sounds like?
    – mattdm
    Jun 10, 2016 at 16:51
  • I am shaking it slowly and sound is also low . I seems that some type of hollow ring is striking . Jun 10, 2016 at 18:44
  • However it is working properly when mounted. Jun 10, 2016 at 18:45

2 Answers 2


I hear the faintest jiggle when I shake my lens (and I'm not shaking it very hard). I think my sound comes from the zoom ring moving slightly. I can feel some internal movement but I don't hear anything.

For what it's worth, I bought my lens on eBay, and it's suffered some shocks since I've owned it. Nothing major. I think it's in good shape.


It is normal to hear some clicking sound by shaking a lens, because of AF mechanism. Zoom lenses and VR make more noise because they are made of moving parts.

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