The dangers of relying on AI-driven autofocus systems became very apparent during a recent professional soccer match, where the hard camera's tracking system kept mistaking a linesman's bald head for the game ball.
Autofocus and tracking systems are increasingly big selling points of modern cameras, whether it's the animal AF in cameras like the Canon EOS R5 (opens in new tab) and Canon EOS R6 (opens in new tab), the face and eye tracking of the likes of the Sony A7R IV (opens in new tab), or the head detect autofocus of the Canon EOS-1D X Mark III (opens in new tab) – which would have come in handy for this match!
The game in question took place in the Scottish Professional Football League on 24 October, between teams Inverness Caledonian Thistle FC and Ayr United FC.
As you can see in the video below, the camera repeatedly pans away from the on-ball action and instead frames the image based on the bald-headed sideline official, which it mistook for the game ball.
According to Gizmodo (opens in new tab), Inverness Caledonian Thistle FC began live-streaming its home games to season ticket holders (and also on demand via pay-per-view) as part of the ongoing social distancing efforts to protect fans, players and technicians when matches take place.
The same initiative saw the club opt not to use human camera operators, but instead to use an automated AI-driven camera system by Pixellot (opens in new tab) – a company that proclaims "AI-automated video and data will keep sports running!"
Pixellot promises "a revolution in sports broadcasting" and boasts that its AI system means "no production team required". However, it's clear from this footage that a production team would have come in very useful.
Ultimately, no autofocus system is infallible. Canon's Deep Learning AF (opens in new tab) system, iFR ATX, seen in the 1D X Mark III and the Canon EOS C70 (opens in new tab), has never once let us down while filming sport thanks to its otherworldly head tracking capability. However, we've all had those shots spoiled when the AF mistakes something for your subject and focuses in the wrong place.
At the end of the day, no computer can ever replace the human eye!
Canon EOS R5 review (opens in new tab)
Canon EOS R6 review (opens in new tab)
Sony A7R IV review (opens in new tab)
Canon EOS-1D X Mark III review
(opens in new tab)Canon EOS C70 review (opens in new tab)