             // とりあえず portrait に戻す
             let videoOrientation = AVCaptureVideoOrientation.portrait
             videoDataOutput.connection(with: .video)?.videoOrientation = videoOrientation
-
-            resetZoomFactor(sync: false)
         }
 
         if switchSucceed {

            OrientationDetector.shared.startSensor()
            sessionQueue.async {
                self.captureSession.startRunning()
                self.resetFocusAndExposure()
            }
        }

                    observer.simpleCameraDidSwitchCameraInput(simpleCamera: self)
                }
            }
            resetZoomFactor(sync: true)
            resetFocusAndExposure()
        }
    }
