2 weeks ago, I bought a Fairphone 3 preinstalled with /e/OS. I have problems with the autofocus, too:
I you tab the screen, you see the camera optic trying different focal distances. The preview changes from blurry to sharp and back to blurry. It is very annoying since I see, there is a sharp optical setting possible. The camera app just does not use it.
Setting the focus-mode to “manual”, I can adjust the settings to get a sharp picture. So I guess, it is not a hardware problem.
A workaround, I discovered: If I disable “Use Camera2 API” in the settings, the auto-focus works just as expected: Tap the screen -> camera searches for correct focal distance -> good focal distance is found and set -> I get a nice, sharp picture.
I also have this issue on my Xperia Z5 Compact. When I press somewhere on the screen the AF square always become red (AF failed?). Only once in all my tries has it been green. Manual focus works, but I rather have AF.
Focus do not work with OpenCamera with my FP3 and has never worked. This is just unbelievable.
Focus works with BetterCamera and Camera at least.
I hope such bugs will be corrected before a production version of /e is released!
Perhaps, in my case, it is related to missing proprietary firmware blobs. I tried some other app, but result is unfortunately the same.
It’s a shame it doesn’t work for you if you bought your phone with /e/ (even though it is labelled as ‘beta’), at least in my case I installed the software by myself.
Hopefully this is being fixed in the near future or replaced by another app. I can try to manully focus on the Fairphone 3+ but the results aren’t always 100% sharp.