This chart comes from a good source but seems off. The video specs are very disappointing with no full frame 4K/60p on either the A7S or A7 M4. 1080p ones again caps out at 120fps. The sensor readout mode on the A7 IV is shown as once again 6K downsampled to 3840 x 2160 with a 1.2x crop if shooting 30p, which hints at the same sensor as before. Interestingly the A7 IV is listed as having a variable optical low pass filter (like the RX1 Mark II) – basically a vibrating piece of glass over the sensor, and the next A7S (oddly labelled Mark 4 when it should be Mark 3) at least has 1.5x crop 4K/60p in Super 35mm mode (like the Panasonic S1 and S1H).