This I also posted at FredMiranda (where a great ongoing list is being maintained about EF+A7Rii compatibility)-
Happy to report that the new Sony works well with the 400DOii via the Metabones IV. I'm actually elated that this combination works and for several reasons. The first being that my MBiv works--there was a report on POTN about an adapter arriving dead in the water. Secondly that the AF with this lens is fast=I would not be able to tell the difference in focus speed between this combo versus this lens on my 5Diii. Is it perfect? Nope, but the hunt time was minuscule and that happened only when I'd go from close focus to far.
Settings for those curious: AF-C, Flexible Spot Medium, Auto ISO, AWB, High burst rate. Though excited/elated this is not a combo I plan on using often. I'm looking forward to adding an EOS 400mm 5.6, and I read on FredMiranda (thanks so much for that ongoing compatibility list Mr. Miranda) that it also does well. Reading is one thing I've got one coming Monday from Lensrental to have a hands on.
Now a shot from this morning-











