![]() The Sigma USB dock looks like the cap that you use to cover the lens mount with, when it’s not attached to the camera. That will also buy us some time to try it out and test it in real-life. As an introduction to our USB dock review in part 2, which will be posted in a few weeks, we will start with describing here what you can do with the Sigma USB-dock. ![]() Moreover, on the “Sports” lenses you can customize the AF speed, the focus limiter, and the OS function to your own preference. In addition you can fine-tune the autofocus, in case you want to correct any front-focus or back-focus. ![]() The USB dock and the accompanying Sigma Optimization Pro software allow you to update the firmware of every Sigma Art, Contemporary or Sports lens yourself. The Sigma USB dock is an innovative concept for maintenance and customizing your for lenses. Therefore it is not often that we have to spread a review over more than one page.
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