Requested there:
https://www.youtube.com/watch?v=WOHFQgHE2X8&lc=z12fipthizbtwzzfs23jjznhrmu2zfggb04
https://www.youtube.com/watch?v=uX6wQTf1oQA&lc=z12kvrfwrlftx3r4i04chxzyhqyfcfxhlkw0k
"1) Tap-to-focus
A) (from minute 0:37 on) https://youtu.be/tjSviTxLLqY?t=37
B) (from minute 7:39 on) https://youtu.be/AEsSsdTKJs4?t=459
Touch to focus is part of AF system and maybe a good solution to overcome eventual limitations. Fastest settings tested ain't anything