Sigma 17-70 f/2.8-4 DC Macro OS HSM Question

Started Jun 13, 2014 | Discussions thread
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rpps Senior Member • Posts: 1,761
Sigma 17-70 f/2.8-4 DC Macro OS HSM Question

I bought a second hand Sigma 17-70 f/2.8-4 DC Macro OS HSM  and I think it's faulty. I can't get a sharp photo at apertures below f8 and when I shake the lens I hear something like a loose internal focus element inside rattling.

If someone else has this lens do you hear anything lose if you lightly shake the lens and at f4 are your photos sharp?

 rpps's gear list:rpps's gear list
Panasonic Lumix DMC-GX7 Nikon D750 Nikon D5600 Nikon AF-S DX Nikkor 16-85mm f/3.5-5.6G ED VR Nikon AF Nikkor 35mm f/2D +7 more
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