Sigma Lenses and Dock

Started Sep 18, 2017 | Discussions thread
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Labmom60
Labmom60 Contributing Member • Posts: 661
Sigma Lenses and Dock

I'm looking at the Sigma 18-35mm f1.8 or Sigma 17-70mm.  A couple sites I looked there was a dock available to purchase. Sorry, I guess I don't know a ton about Sigma lenses, except some have focus issues and they have an Art lens.  Please educate me on this dock, if I need it.  I'm kind of worried about getting one with a focus issue(this will be on a D7500).

Thank you

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