17) depth of field, Depth of field – Pentax ZX-5N User Manual
Page 91
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(17) DEPTH OF FIELD
Zoom 28-70m m f/'4 lens focused at the distance of 2m w ith the lens focal length 28m m .
15
10
8
7
6
F16
F5.6
1
Camera-to-
subject
distance(m)
>
O
<
>
o
m
30
>
•H
5
2
CO
Depth of field refers to the range around the optimum
focusing point of the subject in which the elements at
different distances are in focus. The depth of field in
creases as the aperture is closed down, the focal length
of the lens becomes shorter, or the subject is positioned
farther away.
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