In Sony’s press release for the launch for the a7S II, they claim:
When shooting video, the AF performance is twice as fast as the predecessor model.[x]
[x]Compared to the ?7S, when shooting Full HD movies.
Let’s see if this is true:
Takeaways
As far as continuous AF is concerned, even if there’s a difference, it’s hardly noticeable in general use.
However, the bad news is, Center Lock-on AF on the a7S II is much worse for some reason. I’ll check again but the only setting one can change that might affect this is Digital Zoom, which I tried turning off. Even changing the Focus Area settings doesn’t make things better.
For my quick autofocus settings guide, click here. If you’re new to autofocus, you’ll want to watch the detailed autofocus for video guide.
