The position of an image is not the only way that it differs from the object. In general the size of an image differs from the size of the object. Magnification (or diminution) can be quantified in ...The position of an image is not the only way that it differs from the object. In general the size of an image differs from the size of the object. Magnification (or diminution) can be quantified in two ways, both of which we will explore here.