: Taking photos in Portrait Mode may default to a specific crop factor that results in these dimensions.

The string refers to a specific image resolution often associated with "zoomed" or cropped front-facing photos on newer iPhones, or the standard output for the iPhone 11 TrueDepth camera when not set to its maximum wide-angle mode. Camera Performance Review

: Tap the "expand" arrows in the camera app to switch from the cropped 7MP view to the full 12MP wide-angle view.