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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?

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

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3

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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