Concepts in Photography
181
DOF depends on focal length
The longer the focal length is, the lower the DOF gets. A telescope lens with a longer focal
length than a wide-angle lens with a short focal length is better to take a photo of a low DOF.
A photo taken with a
20 mm wide-angle lens
A photo taken with a
100 mm telescope lens
DOF depends on the distance between the subject and the camera
The shorter the distance between the subject and the camera is, the lower the DOF gets.
Therefore, taking a photo close to a subject can result in a photo of low DOF.
A photo taken with a 100 mm
telescope lens
A photo taken close to the
subject