Pentax ZX-5 ZX-5 Manual - Page 91
Depth, Field
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(17) DEPTH OF FIELD 87 Zoom 28-70mm f/4 lens focused at the distance of 1.5m with the lens focal length 28mm. SNOLLVEI3dO 03ONVA0V /1i O CO 15 10 9 B 7 6 5 4 3 I2 0 F4 F5.6 Camera-to- Ft subject F11 distance(m) F16 F22 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 increases as the aperture is closed down, the focal length of the lens becomes shorter, or the subject is positioned farther away. The Range Allowed for Focusing The in-focus range varies depending on the aperture in use. Zoom lenses do not have a depth-of-field scale for mechanical considerations.
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(17)
DEPTH
OF
FIELD
87
/1i
Zoom
28-70mm
f/4
lens
focused
at
the
distance
of
1.5m
with
the
lens
focal
length
28mm.
O
CO
15
10
9
B
7
6
5
F16
4
3
I
2
F
F4
F5.6
Ft
11
F22
0
Camera
-to
-
subject
distance(m)
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.
The
Range
Allowed
for
Focusing
The
in
-focus
range
varies
depending
on
the
aperture
in
use.
Zoom
lenses
do
not
have
a
depth
-of
-field
scale
for
mechanical
considerations.
SNOLLVEI3dO
03ONVA0V