The Sony RX10 IV's full single-shot autofocus shutter lag when shooting the same target multiple times was incredibly fast for a long-zoom camera, and much faster than the Mark III's. The RX10 IV ...
The Sony RX10 is equipped with a 8.8-73.3mm f/2.8 lens ... though it's pretty mild. F/4: Interestingly, stopping down to f/4 at wide angle actually produced slightly softer corners on the right ...