Sigma 17-50mm f/2.8 with D7100 minor auto-focus inconsistencies

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Ceridan
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Sigma 17-50mm f/2.8 with D7100 minor auto-focus inconsistencies
7 months ago

Hi!

I bought Sigma 17-50 f/2.8 to use with my D7100. While it performs reasonably well, I noticed some minor auto-focus inconsistencies. While the focused spot/line is always in focus, the rest of the DOF tends to be either front-going or back-going. However this changes with the focus point and the focal range so simple in-camera auto-focus fine tune does not help.

Do you know, if this is just a minor faulty lens or it can be adjusted in the Sigma service centre?

Btw, I can't fine-tune the lens with the Sigma USB dock as that only supports newer Art/Contemporaty/Sport line.

Thanks!

 Ceridan's gear list:Ceridan's gear list
Nikon D750 Nikon AF-S Nikkor 85mm f/1.8G Nikon AF-S Nikkor 35mm f/1.8G Nikon AF-S Nikkor 20mm f/1.8G ED Nikon D40 +4 more
Nikon D7100
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