But shouldn't the app be programmed to maximize the chances that it'll work on the first try? It seems like a reasonable compromise to me. Annoyingly bright for a few seconds so I don't have to futz with my brightness.
This subthread was about if the app should even show QR codes at maximum brightness because the scanner could maybe also scan the code at the normal brightness. And the counterpoint was that you can’t selectively increase the QR code brightness to the HDR level manually, because you would be capped at the normal maximum brightness.