Also, depth-of-field (zone of focus range) is deeper with wide-angle lenses than it is with telephoto lenses at the same aperture setting. Look at the photos of the model on Page 4 again where they were shot at the maximum aperture of f/2.8 of the lenses and compared the depth-of-field in the background from the 28mm to 300mm. After that, compared the depth-of-field of each focal length now shot at the aperture settings of f/5.6, closed down two stops from the maximum, from these photos below: << Back to Main . 1 . 2 . 3 . 4 . 5 . 6 . 7 . 8 . 9 .