[NoImmatureAdHom]

You can use Google's camera application, which is optimized for the Pixels of course. I think it will probably work with the new sandboxed play services implementation, but there is a simpler way: https://github.com/lukaspieper/Gcam-Services-Provider

This is a stub implementation of what gcam needs and it works great. I believe, independent of sandboxed play services, GrapheneOS team plans to implement stub play services like this for all parts, not just those required by gcam.

You can install gcam and just give it no permissions (especially network). It will chug along merrily.

[jmnicolas]

Hi, thanks for the tip. I have a Pixel 4 XL, do you know where could I find Google's camera app (obviously without connecting to the play store)?

[xanaxagoras]

APK mirror. Risk is mitigated with no network connection.

[NoImmatureAdHom]

I think you can get it via Aurora Store, which you can get via F-Droid