The USB dock is inherently a very simple device. In this review we'll look into how it works, and what it can do. But look a little closer and it's actually an interesting piece of kit.
It would be easy to think that because nobody else offers such a thing, it must be superfluous. It's a pretty simple concept - it allows you to plug a lens into a computer and update its firmware or tweak its operational settings using Sigma's 'Optimization Pro' software.
Sigma's USB dock is a unique accessory, that was announced as part of Sigma's 'Global Vision' strategy at Photokina 2012.
