Sigma 70mm F2.8 DG Macro Art Lens For Sony E-Mount Camera - Black (271965)

does this work on a6xxx body?

How does this compare to sony 50mm f2.8 macro lens for video? i like af but can shoot in manual focus as well. i am looking for pro quality.

What size filter does it take?

Anyone tried this for copy stand work? Is there much distortion? Will be using with a Sony a6xxx series, edge distortion on a full frame not an issue.