English: Angular magnification for a common magnifying glass. Size of eye (the pale blue blob at the right) exaggerated to "show" images on the retina. The green (dotted) image (subscript i) lies in infinity as the red object (subscript o) is placed in the focus of the lens, but is shown next to the image for showing approximation with linear magnification (i.e. using tangens instead of the angles themselves).