The following photos show the changes in the angle-of-views of the various focal lengths ranging from 28mm to 200mm: PERSPECTIVE: Perspective refers to the relative size of elements from front to back. It, too, varies inversely with focal length. That is, with a wide-angle lens, things seem comparatively farther apart than they do with a normal lens. Conversely, a telephoto lens makes various things seem closer together than they actually are. This compressing of distant elements with a telephoto lens is sometimes called "stacking" and is one of the most interesting properties offered by long lenses. << Back to Main . 1 . 2 . 3 . 4 . 5 . 6 . 7 . 8 . 9 .