 
 final class CameraThumbnailCell: UICollectionViewCell {
     
-    private let backView = UIView()
     private let button = UIButton()
     
     private var cameraOutputBinder: CameraOutputGLKBinder?

    override func layoutSubviews() {
        super.layoutSubviews()
        
        backView.frame = bounds.shrinked(top: 0.5, left: 0.5, bottom: 0.5, right: 0.5)
        cameraOutputBinder?.view.frame = backView.frame
        button.frame = bounds
    }
    

        )
        
        let view = cameraOutputBinder.view
        view.clipsToBounds = true
        view.layer.cornerRadius = 6
        insertSubview(view, belowSubview: button)
        
        self.cameraOutputBinder = cameraOutputBinder
        self.backgroundColor = .white
    }
    
    func setOutputOrientation(_ orientation: ExifOrientation) {
