I just ran the update and tested my Fotodiox adapter with my Canon 85mm f/1.8. I was excited to have this work, as I lucked out with a really nice copy of this 85mm.
Unfortunately, I'm seeing some weird results...
With face detect on, AF is pretty quick and very accurate. I'd say the AF speed is within 90% of my 6D. It even focuses on the near eye, when my subject is turned slightly to the side. This part is really awesome.
However, on any other object (without a face), the AF appears to get close, but then hunts back and forth very fast, and never gets an AF lock.
I've tried it with all the AF areas: wide, center and flexible-spot. And on AF-S and AF-C. Results are the same.
Anyone else updated the firmware and tested their EF lenses?