         }
         set(image){
             let imageView = UIImageView.init()
-            imageView.contentMode = .ScaleToFill
+            imageView.contentMode = .Center
             imageView.image = image
             overlayView = imageView
         }

        didSet{
            if let maskImage = maskImage {
                let _maskView = UIImageView()
                _maskView.image = maskImage
                maskView = _maskView
            } else {

        }
        set(image){
            let imageView = UIImageView.init()
            imageView.contentMode = .Center
            imageView.image = image
            backgroundView = imageView
        }
