The Sony RX10 IV is a fixed lens camera with a 1"-type sensor and 24-600mm equivalent lens that can shoot 4K video or stills at 24 fps, but that's not what we think is interesting about it. The addition of phase detection autofocus is pivotal to all of those features. If you have a little over a minute to spare, we'll tell you why. And for bonus points, we shot this video entirely hand-held with an RX10 IV and continuous AF turned on.
Read more, and watch the informational video, from here.