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Minolta X-370 - Depth of Field Explanation

Minolta X-370
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28
DEPTH OF
FIELD
1.2
1.5
50
-A-
1'"
.~)
23510=
I I I I
II
'.
11
I I
22
16
B 4 4 B
16
22
m
1.7
2.8
4
5.8
8
11
16
.'
-B-
When a lens
is
focused on a given
subject,
there
is
a certain range
behind
and
in
front
of
the
subject
which
appears sharp. This range
is
called
"depth
of
field",
and
it
varies
according
to
the
aperture
set: large
apertures (e.g., f
11
. 7)
yield
a
shallow
depth
of
field
rendering
the
background
out
of
focus (example
A);
small apertures
(e
.g., f /22) give
greater
depth
of
field
with
sharper
background
(example
B)
. The
depth
of
field
can be checked
on
the
lens'
depth-of-field
scale
as
shown.
Depth
of
field
also varies
with
subject
distance:
when
the
lens
is
focused
on
a close subject,
the
depth
of
fiel
'd
is
shallow;
when
focused
on
a
distant
subject,
the
depth
of
field
is
greater.

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