Lesson 2/Learning Event 4
Learning Event 4:
STATE THE EFFECT ON PERSPECTIVE FOR A GIVEN FOCAL LENGTH LENS
1. The human eye sees objects in three dimensions: height, width and depth.
A photographic lens reproduces objects onto the focal plane in only two
dimensions: height and width. The missing dimension, depth, is suggested by
the relative size and position of the various objects in a picture. Note in
figure 2-10 that you are looking down a road with evenly spaced trees on
Notice how the road decreases in width and the trees appear
closer to each other as the depth increases.
Depth as viewed by the eye or normal lens
2. Changing the focal length of a lens DOES NOT change the actual depth
Depth perspective is dependent on lens-to-subject distance.
Focal length, however, changes the apparent perspective because the camera
does not record as much of a scene with a telephoto lens as it does with a
normal lens (fig 2-11).