11. ①AVCaptureSesison の準備 // セッションの作成 self.session = [[AVCaptureSession alloc] init]; _session.sessionPreset = AVCaptureSessionPresetHigh; @property (nonatomic) AVCaptureSession *session; 12. ②入力デバイス（カメラ）の準備 // 入力デバイスの設定 AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo]; ! AVCaptureDeviceInput *input = [AVCaptureDeviceInput deviceInputWithDevice:device error:n
