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UTILIZING THE LENS DEPTH OF FIELD
1
.
What
is
meant by Oepth of
Field
Ta ch
eck
th
e e
ff
ects
of
the
aperture vou have selected
-how weil you have blurred out
the
ba ckground or
how
w•d
e
th
e
depth of
sharpness
•s-ali you
have to
do
is
ta
look through the view
finder.
bec
a
use the
apertu
re w
1ll
close dawn to
the size vou
hav
e
selected
as
vou pr
ess
•n
th
e D ept
h of F•el
d
Prev •ew
Bunon
@
Thus.
the sharpness of a
p•ct
ure
extend
s over
a
con
s•derabl
e
ra
nge
bath
1n
fro
nt of and
beh
•n
d the
po•nt the
len
s
tS
locused
on
T
hts
zone
of sharpn
ess
o
s
relerr
ed
ta
as the
depth al f1el
d The
w
od
th
of th
e
depth of f1efd d1
ff
ers
depend
on
g
on
the
lens focal
len
gth.
sub1
ec
t
d•st anc
e.
and lens
ap ert
ure
(
1)
The
h1g
her th
e
apert
ure
number (th
e
smaller
the
aperture).
the w1de
r
the
de
pth of hefd
.
The fower
the ape rture
nu
mber.
the
narrower
1
1
become
s.
(2)
The longer
th
e foca
l
le
ngth
of the
lens.
th
e
narrower
th
e depth
of fleld
,
and the shorter
1t
•s
A
64
th
e
w•der
n
becomes.
(3)
The
farther
the
dos
tance
th
e
lens is
focused
on.
the
wo
der
the depth of
held.
(4)
The zone
of
sharpncss
on
front of the poont of
sharpest
foc
us
•s
narrowe
r than
the
zone of
sharp-
ness behmd
the
sam
e
pomt.
(5)
Exampl
e
A shows
the
aperture lully
open.
Example B
shows
the
aperture
stopped dawn ta
f/16.
2.
How
ta
see
th
e
Dopth
of
Field
Ali
th
e
ont
erchangca
bl
e
lenses
o
f
the
FUJICA
STX·
1
are provided
wnh
a
depth
of
fle
ld
md
ica tor
on the
lens
barrel.
For
example,
If
you ar
e
us1ng an F2.2
55 mm
normal
lens
and
have se
t th
e
apertur
e
at
f/
8
and
the distance
at
15 feo
t
(5
m).
ev
eryth1ng from
about
11
5 feet (3.5
m)
ta
28.5 feet
(8.7 m) w
1
ll
be 1n
sha
rp
locus.
B
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