Contrived photo of a converging lens.
The photo is the image of my Emmitt Smith pennant through my old glasses. I had strabismus, also known as lazy eye, when I was younger. At this point in my treatment, the lens for my affected eye only was used for magnification. The image through this lens is larger. It is also upright. The image appears on the same side as the object, which makes it a virtual image. The lens for my affected eye is a converging lens. Only converging lenses can have virtual images that appear larger than the actual object. The fact that the image is virtual and larger also means that the pennant is closer to the lens than the focal point of the lens. Since the image is upright and larger, the magnification of the lens is greater than one and positive. In research, I found that most strabismus lenses are farsighted lenses. Farsighted lenses are converging lenses, so it checks out. This lens is a perfect example of how converging lenses change the distance and height of an object's image.
