selbst ist der Mann

Who does not want to rely on others, has the USB Dock very good setting for his (s) Sigma lens (e). My 18-35 Sigma has a distance and depending on focal distance irregularly occurring fehlfokus, via the (linear) AF Adjustment my camera (D7100) was unrecoverable. With USB Dock and "a lot of patience and spit" (other reviewers have described and named the annoyances) agrees with the AF now for all distances and focal lengths.
Since I'm not a fan of them to send in the camera and lens for adjustment and then may still not be satisfied with the Ergenis there despite the aforementioned Beschwehrlichkeiten from me a clear recommendation, especially since the price of the part as measured by the other photo equipment, no real represents intercom argument.