avondale87 wrote in post #19112308
yes - I thought after my comment it didn't really address the skill in doing it. It just sounds toooooo easy

But I know from watching ours that is so far from the mark

No matter how good your AF, it can only focus on things in the frame, which is much of the challenge with some subjects.
I suspect that if a lot of people are like me, they don't develop the tracking skills for erratic subjects that come with much time trying, because even if they get them in the frame, the more primitive AF that they've been using doesn't reward with a lot of successes, anyway. There is likely more of a reward motive to develop the tracking skills when FOV tracking with the lens itself is the only major battle.