With some hours before the irresistible hoopla of the Super Bowl and desirous of no more examples of inhumanity in the global news, I surfed over to a camera forum dedicated to the brand I used in all my work.
A poster asked for help with the abysmal results he got from a newly purchased, expensive camera featuring the latest auto focus automation – in this case for birds (it’s always birds). It hit a nerve about a relatively recent eBay sale and the fallacious belief that automation will trump understanding and skill.
I made this 13 years ago, with #3 of 12 DSLRs I’ve used since. Hardly current technology.

The technique is straightforward. Reassign Focus from the Shutter button to a button on the back of the camera aka “Back Button Focus” – it’s free! Yes, it does require (horrors) reading a page of the manual. Or watch a You Tube video.
Set the focus function to “Continuous” (mfrs call it different names but it’s still a Rose). Leave it with a single center point . Then point at what you want in focus while holding the rear button with your thumb and track it. Mash the shutter button when you see what you want. Disclaimer: 60 to 80 K of Dancer images per year may result in a callous on your thumb.
Static subject, on a tripod? Just release the back button. Or change the focus mode to “Single”.
Back to eBay. I honestly listed a “Bargain” condition camera body with the real shutter count, some 6OK shy of the mfr. rating. A guy bought it and two hours after he picked it up, e-mailed me it was no good, couldn’t focus on birds in flight. I had set it to mfr defaults. But I’m pretty sure he didn’t read any of the manual.
I immediately refunded his purchase, realizing any explanation was pointless. He did return it. Kept it and another copy, as my retirement gear. Haven’t experienced any issues.
As for the birds, this from camera either #6 or #7 (always kept two of the same model), in 2014
