FP4 stock camera app has been upgraded. eOS camera app is not a fork of the stock app, it is a fork of OpenCamera, if I remember. FP4 stock camera works on my phone but I can’t use wide pixel feature (48MB). I had install this app time ago (v. 2.0.010), maybe now it’s different. But you can’t find the app in a store.
Edit: I asked time ago about stock camera app: Murena Fairphone 5 is now available for pre-order at murena.com
Any news @Manoj?