Quote:well the lenses I would like to see are Sigma 50-100f1.8 ART, sigma 18-35 f1.8 ART (but we need a video test here for its AF) Sigma 85mm f1.4 ART (once available)
Video and AF ?
USM, HSM, USD ... these are all AF systems that are unsuitable for video. There is nothing to test there.
Pros don't use AF at all in the first place which is why dedicated video lenses have these huge bodies to accomodate the focus gears for smooth manual focusing.