Pentax Program Plus Program Plus Manual - Page 50
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DEPTH -OF -FIELD 15 10 9 8 7 6 f/1 A /5.6 f/11 1/22 with 50mm f/1.4 I 0 Distance (ml m C° 10 5 3 22 16 11 8 5.6 41.4 5.1 fi Depth-of-field is the range between the nearest and farthest distances which are in focus at a given lens aperture. The minimum aperture (for example f/22) gives you the greatest depth-of-field, or area in focus. The maximum aperture (for example f/1.4) gives you the smallest depth-of-field. When you vary aperture value, the range "in focus" changes accordingly, so that you can create different photographic effects in your pictures. As illustrated in the pictures on the right (examples of f/1.4 and f/22), the distance range in focus can be confirmed by the depth-of-field scale on the lens. • 46
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DEPTH
-OF
-FIELD
with
50mm
f/1.4
15
10
9
8
7
6
f/1
A
/5.6
f/11
1/22
I
0
Distance
(ml
m
C°
10
5
3
22
16
11
8
5.6
41.4
Depth
-of
-field
is
the
range
between
the
nearest
and
farthest
distances
which
are
in
focus
at
a
given
lens
aperture.
The
minimum
aperture
(for
example
f/22)
gives
you
the
greatest
depth
-of
-field,
or
area
in
focus.
The
maximum
aperture
(for
example
f/1.4)
gives
you
the
smallest
depth
-of
-field.
When
you
vary
aperture
value,
the
range
"in
focus"
changes
accordingly,
so
that
you
can
create
different
photographic
effects
in
your
pictures.
As
illustrated
in
the
pictures
on
the
right
(examples
of
f/1.4
and
f/22),
the
distance
range
in
focus
can
be
confirmed
by
the
depth
-of
-field
scale
on
the
lens.
•
46