Canon has released a firmware update for the Canon EOS-1D X Mark III. The big item of note is the enhancement to AF for improved face and eye recognition at distance. What this means in practice will take some time to ascertain. With the current lock down it is difficult to get out to test.…

Source: https://blog.jholko.com/2020/08/28/canon-eos-1dx-mk3-firmware-update-august-2020/