It only took a couple of days, but I finally found a hero who documented the #ov2640! (Specifically, DCW doesn't quite do what you expect. And you probably want it turned on.) He also covers the other settings, with a great description of how it works internally.

The info is a couple of sections down the page here https://heyrick.eu/blog/index.php?diary=20210418

#esp32 #espcamera #esp32cam #microcontrollers #esphome