[g6taa]

You can select the different cameras and avoid digital zoom.

[seanw444]

Open Camera does that though. It's right next to the main "take photo" button. At least on the version I have.

[g6taa]

I hadn't seen that button, but at least for me it's not enough: I want to be able to select the camera directly. And in Open Camera I can only select two out of the three cameras.