Table of Contents
Advertisement
(12) DEPTH OF FIELD
Zoom 28-80 mm lens focused at the distance of 2m with the lens focal length 28mm.
n
E
GE
Ха
Ar
«7
1
T
6
a-to-
}- subject
distance(m)
и
кє
Depth of field refers to the range around the optimum
The Range Allowed for Focusing
focusing point of the subject in which the elements at
Тһе in-focus range varies depending on the aperture in
different distances are in focus. The depth of field in-
use.
creases as the aperture is closed down, the focal length
Zoom lenses do not have a depth-of-field scale for me-
of the lens becomes shorter, or the subject is positioned
chanical considerations.
farther away.
[3]
змо
азо
IW
Advertisement
Table of Contents
