46
Exploring Photography
28 mm wide-angle lens
100 mm telephoto lens
50 mm normal lens
300 mm telephoto lens
Figure 3-36. This set of photos compares wide-angle, normal, and telephoto lenses. (Jack Klasey)
Figure 3-37. A mirror lens is lighter and more compact than a long lens because the mirror folds the light path.
(Sigma)
Mirror
Mirror
Lens elements
Focal
plane
Path of light rays