dpreview compared the Eye AF feature on Sony a7R III and Nikon Z7 at the CP+ show 2019. It seems Sony a7R III‘s eye AF is more accurate than Nikon Z7, and a7R III can detect eyes from further away.
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At Photokina 2018 press event, Sony announced that they will release 12 more native E-mount lenses in near future. The latest Sony E-mount lens is FE 24mm f/1.4 GM Lens (B&H Photo/Amazon/ Adorama/WEX/ParkCamera). And they will also add AI to next Sony cameras, and Eye AF to work on animals.