1. In every mode the trigger button is in the bottom center so you’re always able to take a photo.
2. To change the camera’s settings, just tap the settings you want to adjust. Scroll the picker to select the value you want – values will be updated in the camera immediately.
3. Settings that are greyed out, are read-only: You can see the settings, but you can’t change them from the app (because they are changed via a hardware dial on your camera). Settings that are dark grey and have a “Not available Icon” are not available at all.
4. Tap on a greyed out setting to see the reason why it’s read-only or not available.