1. Depth Of Field (DOF)

2. 1.Distance to Subject (Closer =Less)
The 4 Controls of DOF
1.Distance to Subject (Closer =Less)
2. Focal length of Lens ( Larger= Less)
3. f-stop ( smaller f stop # =Less)
4.Sensor size ( Larger = Less)

3. Limit depth of field to emphasizes subject and simplify image .
Shot with 200mm lens at f-stop 2.8

4. Closer to Subject = Less DOF
Shot with 85mm f 5.6

5. Further from subject + Wide angle lens = greater DOF
Shot at 28mm f2.8

6. Small Aperture = Large DOF
Shot at 60 mm f 16