The other two prominent open source camera apps are Fossify Camera and PhotonCamera. Fossify Camera does not support multiple lenses yet. PhotonCamera is nice because it does image processing and handles my camera lenses correctly but its UX is janky (on my device, with default settings, taking a photo takes 7-8 seconds and quitting the app before the process is complete loses the image), it's not on F-Droid and it doesn't automatically switch between lenses with zoom changes. There's also FreeDcam but I'm not a professional photographer and I'm certainly not going to buy a color calibration reference card that costs more than a hundred dollars.
It sucks that on my phone with /e/OS, instead of using a FOSS camera app, I resort to using Pixel's camera app with internet permission disabled to be able to take advantage of my hardware.
It's really unbeatable from a photographer / artist perspective, especially because I care a lot about imperfect gritty noisy looks and full control.
Also I think this is overkill? "The following files are used in Open Camera"
Randomly, I wish more UI/UX designers contribute to open source.
It's far superior to anything I've seen natively installed on any device. It has a lot of options, which I suspect can be confusing to some, but they're worth familiarizing with.
My favorite feature is the macro, which when coupled with the right UI settings produces photos that when I have printed, result in the person saying "wow! You took that with a phone!?". And I say "yeah. Open Camera. It's great, try it sometime".
Highly recommend.