Nikon F25B Bedienungsanleitung Seite 42

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Seitenansicht 41
CHANGING
THE
FOCUSING
SCREEN-continued
Focusing
Screen
Selector
Guide
D
42
Type A. L
Type
A:
Matte
Fresnel field
with
3mmq>.circul"r
split-image rangefinder spot
and
12mm¢circle.
Rap-
id
and
accurate
focusing. Excellent for general
photogra phy.
Type
L: Same as
Type
A screen
but
witll split-image
rangefindCI line
at
a 45° anglc. Bcst for subjects
with
horilontal
lines.
Type B: Matte Fresnel field with
12mm¢
fine-
ground matte focusi
ng
spot in the center. Good
for
general
photography,
especially
with
long
lenses.
Type C: Fine-ground matte field
with
4mm¢clear
spot and
cross
hair.
For
photomicrography I astra-
photography and other high-magnification applica-
tions,
and
for
parallax focusing on aerial images.
Typ
e 0 : Overall fine-ground
matte
field. For spe-
cialized
close-up
photography
and
for
use
with
long
lenses.
Ty
pe
E:
Malle
Fresnel field
with
12mmrJ>
fine-
ground
matte
spot
and
etched
horizontal
and
veni-
'
cal lines. Ideal
for
architectural
photography.
Ty
pe G:
Clear
Fresne
l field
with
extra-bright
12·
mm</>
microprism
focusing
spot
for
viewing
and
focusing
in
poor
light.
Four
models
(Gl-G4)
are
available
corresponding
to
specific
focal
length
lenses.
Depth
of
field cannOI be
observed.
Typ
e H: Clear Fresnel field with
microprism
focus-
ing
patter
n
over
the
entire
screen
area.
Permits
rapid
focusing
on
any
part
of
the
screen
with
opti-
mum
edge-to-edge
brightness
in
poor
light. Availa-
ble in
four
models
(1-1
' -
1-1
4)
corresponding
to
par-
ticular
focal
length
lenses.
Ty pe
J:
Matte
Fresnel field
with
central
microprism
focusing
spot
and
1
2mm</>
circle.
Good
for
gene
ral
photography.
Typ
e K:
Combination
of
Type
A
and
J
screens.
Matte
Fresnel field
with
3mm¢
sp
li
t-image
range-
finder
spot
surrounded
by 1
mm-wide
microprism
doughnut.
Rapid
and
accurate
focusing
for
sub-
jects
with
both
straight
lines
and
ill-defined
con-
tours.
Suitable
for
general
photography.
Typ
e M:
Fine
ground
Fresnel
field with 5.5mm</>
clear
spot
and
double
cross
hair
for
use in
parallax
focusing
on
aerial image, plus
millimeter
scales
for
cal
culation
of
individual
magnification
of
objects
or
for
measuring
objects.
Brilliant
image
in
dim
light.
Suitable
for
close-ups,
photomicrography
and
other
high-magnification
app
l
ications.
Type
P:
Same
as
Type
K
but
with
split-image
rangefinder
line
at
a 45
0
ang
le
and
etched
horizon-
tal
and
vertical lines
as
an
aid
to
composition.
Rapid
and
accurate
focusing
for
subject
wi
th
horizontal
or
vertical
lines
or
ill-defined
con
Lours.
Suitable
for
general
photography
.
Typ
e R:
Same
as
Type
A
but
with
rangef
i
nder
prisms
of
sloping
surfaces
at
a
smaller
angle
and
horizontal
and
vertical lines
to
aid
proper
composi-
tion.
Wo
rks
best
with
lenses
having
maximum
aperture
of
from
f/3.5
to
f/5.6
Seitenansicht 41
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