Sigma 50-150mm f/2.8 APO EX DC OS HSM Lens *loud noise*

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romelman
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Sigma 50-150mm f/2.8 APO EX DC OS HSM Lens *loud noise*
5 months ago

I just bought a Sigma 50-150 f/2.8 OS lens for Canon mount, however I often hear a louad squeaking noise that is different than the normal clicking sound when AF is on.  This only happens when the OS is on.  Is this a defect?

A video is here:

http://www.youtube.com/watch?v=rwnT3lxw-68&feature=youtu.be

 romelman's gear list:romelman's gear list
Panasonic Lumix DMC-FZ200 Canon EOS 70D Canon EF 50mm f/1.8 II Canon EF-S 10-22mm f/3.5-4.5 USM Sigma 17-50mm F2.8 EX DC OS HSM +9 more
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