Image view displays one image, or an animated series of images, commonly known as a slideshow. Here we have the basic example of using an image in the Photos app. not technically, an image view is also used to display an icon, which is called the template image. The concept of image view is more important for developers actually, and has more technical considerations than design wise once designers just to know that there is such element as an image, which already know that of course, an image view doesn't have any predefined appearance, and it doesn't enable user interaction by default, but the user interaction can be enabled. So you can include some interactions with the image your slideshows and your designs and image of you can be stretched, scaled size to fit to a specific location. Also, Apple recommends to ensure as much as possible that all images in an image view have the same size and use the same scale.