This post is from the Activity iPhone Duo Photos & Camera Q&A.
Physical camera sensors deliver pixel buffers in native landscape orientation, requiring coordinate transformations when rendering into portrait or split viewports.
What is the recommended pipeline design using AVCaptureDeviceDirectionCoordinator and AVCaptureDevice.RotationCoordinator to guarantee that live preview layers and photo captures remain upright across varying fold angles without manual Core Graphics or Core Image buffer rotation passes? Are there specific considerations when the view hierarchy bridges across the physical hinge division?