The USB Dock is the most important piece of kit I own apart from the lens and camera. This little beauty unlocks extra adjustments on your Sigma 500 F4, and ensures it is updated easily without sending off to the manufacturer. With a little patience, it's easy to dial your lens in for super sharpness. It allows more than 1 profile so I have sharpness settings for my 500 F4 with and without the teleconverter. This dock turns your lens from good to amazing.
Verified purchase: Yes | Condition: New
With the art series Sigma is reducing the gap of quality with the big brends, and sometimes better than them, but still need tune to have perfect focus, and tuning my 50mm f1. 4 from my nikon wasn't enough because the tuning needed to be made on different distances . This dock do a great job, allowing you to set the tune on 4 different distances.
Verified purchase: Yes | Condition: New
Provides Sigma Lens users of lens type A, C, and S to upgrade firmware of currently owned lens as well future purchases of Sigma lenses.
Verified purchase: Yes | Condition: New
Very easy to use. This docking module has made it easy for me to tweak the Sigma 150-600 to suit my bird photography needs.
Verified purchase: Yes | Condition: New
Useful to update Sigma Lens software and lens operational efficiency
Verified purchase: Yes | Condition: New
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