Sigma 17-50mm f/2.8 EX DC OS HSM FLD Issues

Started 4 months ago | Discussions thread
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DV415 New Member • Posts: 2
Sigma 17-50mm f/2.8 EX DC OS HSM FLD Issues

Hi.  I am new to this forum, so sorry if this has already been asked before.  I recently got this sigma lens off eBay and everything seems alright except when I try to use the manual focus ring.  For some reason, it seems very sticky and when I turn it, there is this mechanical whirring sound to it that I have concluded comes from this gear that is shown down below.  Is there any way to fix this or should I return it?  I got it for fairly cheap and other than that, there is nothing else wrong with the lens.

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