2. Depth of Field
Refers to the zone of focus in a photograph, or the distance between the closest and farthest parts of the picture that are sharp or in focus.

3. The depth of field is influenced by the following factors:
focus point
The depth of field is influenced by the following factors:
The lens opening (aperture)
The distance between the lens and the subject
The quantity of depth of field
The depth of field is influenced by the following factors:
The diaphragm or lens opening
The focal length of the lens used
The distance between the lens and the focus point

4. Remember this:
The smaller the aperture used, the greater the depth of field (more in focus). F16 creates an area with far greater depth of field than F2.
The greater the distance between the camera and the subject, the greater the depth of field. (landscapes have large depth of field)
The longer the focal length of the lens, the smaller the depth of field. If you use a telephoto lens, you will have a small depth of field.

5. Remember this: Small aperture (large opening)= F22, F16
Large aperture (small opening) = F1.8, F2.8, F5.6
The smaller the number of fstop, the larger the opening in the lens.

8. F F F 2.8
depth of field

13. Large depth of field

14. Large Depth of Field

15. Large depth of field

16. Large depth of field

17. Small depth of field

18. Small depth of field

19. Small depth of field

27. Student example small d. of f.

28. Student example