Question about Sigma 70-300mm f/4-5.6 DG APO Macro Lens
IN AUTO FOCUS FOCUS RING STICKS MAKES NOISE LIKE GEARS SLIPING. LENS FAILS TO FOCUS. MANUAL FOCUS OK.
How new is the lens? In or out of warranty? If out or warranty most likely solution is to find a Sigma authorized repair shop because your description sounds like the auto-focus motor gear has failed. If in warranty, check out Sigmaphoto.com for repair sites and also download the SIGMA_SERVICE_REQUEST.PDF. I've only had to deal with Sigma once on warranty matter and they were very helpful, provided UPS authorization for shipping on their nickel.
Posted on Oct 16, 2010
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Posted on Jan 02, 2017
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