I've just learned that a Pixel 7's cameras at the rear are:
- 50 MP sensor that can be activated with 1X zoom
- Ultrawide 12 MP sensor activated with 0.7X zoom
Why doesn't the default GrapheneOS camera app have buttons for 1X and 0.7X? Instead of buttons you can easily tap, the app has a slider. But if you're not careful, you can slide into a zoom level that uses digital zoom (instead of hardware-only zoom).
I installed the Pixel Camera app from the playstore (made by Google) and there are zoom presets or 1x, 0.7x, and 2x.