Microsoft Teams has a nifty videoconferencing feature I hadn’t noticed earlier. When you’re in a call with multiple people, you see them in portrait mode. When someone moves to one or the other side in the image, the camera follows them! I suppose it is because the laptop camera itself has a pretty wide-angle shot, and most of it isn’t shown in the conference call. With software it is likely easy to detect where in the image the face of the participant is, and than re-orient the image centered on that person, as long as the edge of the landscape wide-angle shot hasn’t been reached.