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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 those features.
Sure, the price tag is outrageous. But Sony has made some real leaps forward with its RX10 series in this latest iteration. We've been able to shoot some fast-moving action and get some initial impressions of this souped-up superzoom.