This is a special filter that allows you to photograph a single subject three times. With the low-refraction type, the three images of the subject will appear close together. The actual appearance varies depending on factors such as the focal length of the lens. An example is shown at the end of the images. This product is an old item that is already discontinued, so there may be scratches, dirt, and coating wear that are not visible in the product images. The resolution will inherently decrease when using the Mirage filter, so it shouldn't be a major issue, but please refrain from purchasing if you are concerned about minor details.