Max Yuryev compared the high ISO and the continuous autofocus in video mode shooting 4K and 1080P 120FPS between Canon EOS R vs Sony A7 III vs Fujifilm X-T3 vs Nikon Z7 cameras.
The first one is the new Canon EOS R, second is the Nikon Z7, third the Fujifilm X-T3, and fourth the Sony A7 iii. They are all good at autofocusing and they all have their strengths and weaknesses. The Canon can’t autofocus when shooting 120FPS 720P slow motion, and some cameras crop in extra. The Sony turns off its face detection autofocus in 1080P 120FPS mode which is a bummer but the Nikon and Fuji Crop in. Canon’s dual pixel focusing has been around for a long time, but its also limited in adjustments.