Ridiculous. Notice how quickly it acquires the eye, intelligently tracks objects near the eye when its lost, and quickly re-acquires the eye when its found. It got tripped up by the glove once when it was near her face and she pulled her hand back for a swing...but overall really impressive. Even crazier is the fact that when the video switches to the girl in grey at the 40 second mark, the initial focus acquisition was actually on the leg of the girl, but the AF system recognizes that its pointed on a person and immediately prioritized her eye once the tracking started. VERY smart AF system that greatly minimizes the need to toggle AF points.
It's an abusive test case, but this is how lock-on AF should have worked, and there's a tremendous amount of value in something like this for wedding/event/family photography.
I'll be adding an a7III at some point this year, but long-term plan is to acquire an a9 once I fill the other holes in my kit right now.








