Any picture i take consumes 31.85MB - no matter if i use front or main camera, no matter if i reduce image quality in camera settings, no matter if i zoom in. Below i attached a sample image.
edit: obviously, Discourse compressed the uploaded image. Here the original file for analysis with a link to ecloud: https://ecloud.global/s/s9fbdgnWP9gka8t
So a possible workaround is simply to use another camera app.
Personally, I use Simple Camera from F-Droid which works fine.
You can also uninstall the default Camera app using this method if you don’t want to keep both : Uninstall default apps - #29 by AnotherElk
Thanks to all for your answers!
According to the gitlab issue referenced by @Baziluz, restoring the OpenCamera settings to default solves the problem (Camera -> Settings -> Settings Manager (scroll down) -> Restore defaults). Worked for me.