Enter the distance to an object, the f-number, circle of confusion, and focal length into the calculator to determine the depth of field.
Depth of Field Formula
The following formula is used to calculate a depth of field.
DOF = 2*u*N*c/f2
- Where DOF is the depth of field
- u is the distance to the subject
- N is the f-number
- c is the circle of confusion
- f is the focal length
Depth of Field Definition
A depth of field is defined as the distance between the nearest and furthest distances that are the acceptably sharp focus in an image.
Depth of Field Example
How to calculate a depth of field?
- First, determine the distance of the subject.
Measure the distance of the subject.
- Next, determine the f-number.
Calculate the f-number of the lens.
- Next, determine the circle of confusion.
Calculate the total circle of confusion.
- Next, determine the focal length.
Measure or calculate the focal length.
- Finally, calculate the depth of field.
Calculate the depth of field using the equation above.
A depth of field is a measure of distance between the nearest and furthest objects that are acceptably sharp in an image.