2. CARDS & CONNECTIVITYThey each have two SD slots, but the A7 IV also works with one CFexpress Type A card. The Sony sports a full-sized HDMI port instead of the micro sized version.
4. AUTOFOCUSThe R6 II is faster and more accurate with Eye AF. They deliver the same performance for birds in flight, but the R6 II does this at 4x the drive speed.
6. STABILISATIONThe R6 II is superior for stills, as well as for video, although Sony’s secret weapon in video mode is post stabilisation with Catalyst, especially when moving with the camera.
7. VIDEOThe R6 II does 4K 60p without a crop, and has less rolling shutter. The A7 IV offers more options concerning codecs, has a higher bitrate and more image settings.