The Sony a6400 is a mid-range mirrorless camera with a 24.2 MP APS-C sensor. The most significant feature is undoubtedly its autofocus system, which offers 425 phase detection points, ‘Real-time Eye AF’ (which also works on animals, via a firmware update) and ‘Real-time Tracking’ for moving subjects. The A6400 can shoot bursts at 11 fps with continuous AF. The design is unchanged from the A6300, with Sony claiming better build quality. The A6400 has the same OLED Viewfinder as the A6300 and a touch-enabled tilting LCD. The camera can shoot 4K/30p video with full pixel readout and no pixel binning, so we expect the quality to be excellent. Three recording profiles are supported: S-Log2, S-Log3 and HLG, and the a6400 also offers zebra functionality, gamma-assisted viewing and proxy recording.