Sigma 17-50mm f/2.8 EX DC OS HSM DEAD OS???

Started Aug 28, 2014 | Discussions thread
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Toua80 Regular Member • Posts: 298
Sigma 17-50mm f/2.8 EX DC OS HSM DEAD OS???

I can clearly hear the OS activate and deactivate on the sigma 70-200 OS and when OS activates, I see a slight shake looking through the view finder. Ii can barely even hear the OS on the 17-50 and sometimes I don't think i can even hear it.
I hear a sound that is probably the OS when i turn the camera (D5100) off.. normal?

 Toua80's gear list:Toua80's gear list
Nikon D610 Nikon D750 Nikon AF-S Nikkor 70-200mm f/2.8G ED VR II Sigma 70-200mm F2.8 EX DG OS HSM Nikon AF-S Nikkor 50mm f/1.8G
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