[01] Sony A9II AF Mode: Tracking: Wide, FE 200-600G
https://youtu.be/HDGrT2ZqPLA


Sony A9 5.0 firmware Real time tracking AF performance
https://www.youtube.com/watch?v=OTLuKuaDkCo


Sony A9 Firmware 5.0 update with BIF tracking
https://www.youtube.com/watch?v=NxT7UMmaQVk