independent

Any chance of getting a test video to compare the two? Steve Huff also described the a7sii autofocus as the "best in the a7 line." But I'm assuming he meant stills, not for continuous autofocus in video. Still, that's odd, because as you said, the phase detect of the A7Rii. Maybe Huff's comments were in the context low light... I'd like to see a continuous autofocus comparison between the a7r ii and the a7s ii, same native lens, in good light and in low light. I've seen only one comparison so far, it was in low-light, and it seemed the a7rii tracking better but hunted in and out. The a7sii tracked slower but smoother, but no hunting.

Really? This pretty thorough (and overall negative) review claims that the video autofocus is better on the A7Sii than on the A7Rii. "Surprisingly, the auto focus on this camera is incredible. Sony CSC cameras have been laughed at for their poor AF performance, but I have nothing (well, nearly nothing) bad to say about it. The AF on the A7SII outperforms the A7RII, even though it has less AF points. It is snappy, relatively accurate and only ever hunts in severe backlight." http://liesthrualens.com/sony-a7s-mark-ii-review/ Somebody is wrong...

To clarify, did it work on "every" lens or the Canon lenses that you've listed? Second, are you sure that all 5-axis are engaged (yaw, pitch, roll, X, Y)? I think what causes confusion is the statement the stabilization system works for all lenses. That may be partially true, in the sense that 3 out of 5-axis may be engaged, but that doesn't mean that all 5 are. This site quotes Mark Weir as making some unclear comments about it : http://www.thephoblographer.com/2014/12/17/comparison-olympus-sonys-5-axis-stabilization-work/#.VicvKbwyeRs According to the site, entering the focal length into the camera provides pitch and yaw. Roll stabilization is always available - lens agnostic. Based on the process of elimination, it seems that X and Y stabilization needs focal distance - that's the information that can't be manually inputed into the lens. This isn't absolutely clear though. Second, it's not clear if focal distance is communicated electronically via adapters like metabones - whether at all, or more importantly, accurately. If it's being communicated but incorrectly because of the middleman adapter, then it'll be lost in translation. In the article above, they recommend turning image stabilization off in canon lenses. What complicates this further? These comments were made about the A7II, not A7S II. So it's uncertain how much those comments apply now. I think clarity on this issue makes a big difference... it can be a determining factor on what lenses to use for certain shots, and it can have a major impact on your cinematography.

Can somebody with the a7s ii confirm 5-axis stabilization with 3rd party lenses, for both manual (Nikon F) as well as adapted electronic (e.g. Canon + metabones) ? There's some conflicting info out there, and b&h's site says 5-axis stabilization works on all lenses.