Depth of Field Formula
DEPTH OF FIELD (FOCUS)
The zone in the front and back of the area
focused upon that will remain in focus. Anything
within this depth of field will appear sharp.
Depth of field has the following features:
| 1. |
Larger F-numbers give greater depth of
field. The more the iris is stopped down
the greater the depth of field. |
| 2. |
Shorter focal lengths give greater depth
of field. |
| 3. |
Greater subject distance gives greater
depth of field. |
| 4. |
Depth of field is greater behind the
subject than in front. |
|
Permissible
circle of confusion: |
1"
2/3"
1/2"
1/3"
1/4" |
=
=
=
=
= |
0.03mm
0.021mm
0.016mm
0.011mm *
0.008mm *
|
| * unofficial numbers |
|
