Pentax A3000 A3000 Manual - Page 38

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DEPTH OF FIELD with 50mm f/1.4 00 15 10 9 8 7 6 5 4 2 1/ 1.4 1/5.6 f/11 1/22 I 0 Distance (m) Depth of field is the area of acceptable sharpness in front of and behind the point of focus. The depth of field becomes progressively greater as the lens opening becomes smaller. The distance at which the lens is focused also affects the depth of field: it increases as you get further away. The focal length of the lens is another factor to determine the depth of field. The shorter the lens, the greater the depth of field. To check the depth of field on your camera, you can use the depth-of-field scale in front of the aperture ring on the lens. First focus the camera, then move the aperture ring to the shooting aperture. Now check the f-numbers on the scale in front of the aperture ring. Notice the alignment in relation to the distance markings on the focusing-ring scale. Your depth of field is between the distances aligned with the proper pair of f-stop numbers. • 34

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DEPTH
OF
FIELD
with
50mm
f/1.4
00
15
10
9
8
7
6
5
4
2
1/
1.4
1/5.6
f/11
1/22
I
0
Distance
(m)
Depth
of
field
is
the
area
of
acceptable
sharpness
in
front
of
and
behind
the
point
of
focus.
The
depth
of
field
becomes
progressively
greater
as
the
lens
opening
becomes
smaller.
The
distance
at
which
the
lens
is
focused
also
affects
the
depth
of
field:
it
increases
as
you
get
further
away.
The
focal
length
of
the
lens
is
another
factor
to
determine
the
depth
of
field.
The
shorter
the
lens,
the
greater
the
depth
of
field.
To
check
the
depth
of
field
on
your
camera,
you
can
use
the
depth
-of
-field
scale
in
front
of
the
aperture
ring
on
the
lens.
First
focus
the
camera,
then
move
the
aperture
ring
to
the
shooting
aperture.
Now
check
the
f-numbers
on
the
scale
in
front
of
the
aperture
ring.
Notice
the
alignment
in
relation
to
the
distance
markings
on
the
focusing
-ring
scale.
Your
depth
of
field
is
between
the
distances
aligned
with
the
proper
pair
of
f-stop
numbers.
•
34