Graphene is a fantastic operating system for Pixel devices. Simple, reliable and with plenty of security and privacy features to make you feel warm and fuzzy. System updates are automatic, actual phone functionality is flawless, perhaps the only complaint to be had is the quality of camera, which probably lacks proprietary drivers. Signal works fairly well - even without abusive Google Services installed, making this a perfect daily mobile driver. Much gratitude to the developers of this project.

GrapheneOS does not degrade the camera quality at all. The quality will depend on the app being used. If you use Pixel Camera on GrapheneOS, you'd be getting the experience you'd get on stock OS using that same app. Similar for our built-in camera app.

Didn't try it in a long while, but I remember being able to run the proprietary pixel camera app just fine.