Nikon PC-Nikkor 35mm f/2.8 Manual de instrucciones - Página 9
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Depth
of Field
Depth
of
field refers to the
zone of acceptab le focus
extend ing
in front of
and
behind the plane
of sharpest
focus. Within this
zone,
image blur is negligible
and
everything
can be considered
as
being in sharp
focus.
T
a observe
the depth
of
field with
the
PC-N
ikkor lens,
it is necessary to manually
set
the diaphragm to the
required
shooting aperture; for
procedures,
refer
to
"Setting the
Aperture"
on
page
6.
Depth of
field
can also
be determined by reading the
color-coded depth-of-field indicators
engraved on
the
lens
barrel opposite the distance
sca le.
Each
pair
of
colored
lin
es
corresponds to an f/number of the
same
color
engraved
on
the
lens
front
rim_
To find the depth
of field
at
a particular
aperture,
focus the
lens on
the
subject and
then check the numbers on the distance
scale opposite the
co lored
lin
es
that
match
the color
of the preset shooting
ape rture setting.
Wh en in
doubt
about
depth of
fie
ld
for
a
critical
shooting
situati on,
refe
r
to the tables
o
n
page 20
and
21 of this instruction manual.
Recommended Focusing Screens
Various
interchangeable focusing screens
are
available for F3- and
F2
-se
ries
ca
meras to
suit
any
ty
pe
of
lens
or
pi
cture-tak
ing situation.
Those
which
are
recommended for
use
with
your lens a
re listed below.
For screens
used
with
Nikon
ca
meras
other than F3-
a
nd
F2-
series
cameras
(e.g.,
Nikon
FA, FE2, FM2
a
nd
FE),
refer to the
co
lumn
for
F3-series cameras.
F or
the K2, B2 and
E2
focusing
sc
reens, refer
to the
co
lumn
s
on the K,
B
a
nd
E
screens,
respecti
ve
ly.
For
deta
il
s, a lso
refer to the
spe-
cific focusing
sc
reen's
instruction
sheet.
o
=
Excellent focusing
., =
Acceptable focusing
The split-image
rangefinder
,
micro prism
or
cross-
hair
area
is dim
_
Focus on
the
surrounding
matte
area.
0=
Exposure
measurement
via stop-down
met
hod
Blank
mea
ns not usable.
9