In the post linked here above, one response talks about the “Use Storage Access Framework” option of the OpenCamera app, but I cannot find it. Other says that when inserting the SD card for the first time, but in my case, /e/os did not ask to use it as internal storage and I cannot find a setting to switch app to the SD (as it exist on normal android version).
Yes, the settings in OpenCamera are complicated and in many cases you don’t know what they should mean. In this case here it’s questionable why there’s this damned option? When the user selects a directory on the SD card then he probably wants to use this one, this means then that he needs also the “Storage Access Framework”, If he lets the location on the internal device memory then not. This rather technical setting “Use Storage Access Framework” is completely superfluous for the user but it’s also used in other apps.
“Use Storage Access Framework - If selected, Open Camera will instead use the Android Storage Access Framework. This has some advantages, such as using the standard Android file picker, and being the only way to save to SD cards on Android 5+. Furthermore on Android 10+, it is the only way to save outside of the DCIM/ folder. (Requires Android 5.0 or higher.)”