So I purchased one of the new Sigma 18-300mm F3.5-6.3 DC MACRO OS HSM Contemporary lenses for my Canon T1i and the USB dock to make adjustments/updates. There is some definite back focusing at ...

The Sigma USB Dock makes it easy to perform microfocus adjustments and customize some behaviors of recent Sigma lenses.

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Using Sigma Dock UD-11 enables various custom settings to be made, but it is only applicable to L mount versions of the lens. There is no dock available for Sony E mount.

The Sigma USB Dock makes it easy to perform microfocus adjustments and customize some behaviors of recent Sigma lenses.

The Sigma USB Dock makes it easy to perform microfocus adjustments and customize some behaviors of recent Sigma lenses.