Nikon F3 Instruction Manual - Page 38

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Nikon F3 Instruction Manual
-ACCESSORIES-continued--------------
38
Focusing Screen Selector Guide
D
Type
A:
M~Ue/Fresnel
field
with
3mm; circular split-Iml.lge rangefinder
spot and
12mm~
c
ircle. Rapid
and o!Iccurote focusing.
Excellent for
general
photogrophy.
Type B:
Matte/
Fresnel field with
12mm; line-ground
matte
focusing
spot
In the center. Good for general
photography
,
especltlUy
with
long
-lenses.
Type
C
: Fine-ground
matte field
with
4mm; clear spot o!Ind cross hair.
For
photomicrography, ostrophotogrophy
and
other
high-magnifi-
cation
applications. using
~rollax
focusing on
aerial
images.
Type D:
Overilll
line-ground
malte Ileid. For
specialized close-up
photography and for use with long lenses.
Type
E:
MatteI Fresnel field with
12mm;
fine-ground matte spot
and
etched
horizontal
and
vertical lines. Ideal for
architectural
photog-
rllphy.
Type
G
: Cle"r
Fresnel field with
extro!l
-bright l2mm
;
mlcroprism
focus-
ing spot for
viewing
lind focusing in poor light. Four models
(GJ-G4)
o!Ire
o!IvlIllllble
corresponding to
specific focal length lenses. Depth
of
field
cllnnot
be
observed
.
Type
H:
Cle"r
Fresnel field with microprism focusing Po!J,ttern over the
entire screen lire".
Permits ro!lpid focusing
on
lIny Po!J,rt
of
the screen
with
optimum edge-io-edge brightness
in poor
light. AVllilllble in four
models (HI-H4) corresponding to Po!J,rticulllr focal length lenses.
Type
J:
MlIUe/
Fresnel
field
with
centro!ll microprlsm focusing spot and
12mmjll
Circle.
Good
for
generlll
photognphy
.
Type
K:
Comblno!ltion 01
Type A
and
1
screens.
Malle/Fresne
l
field with
3mm
pf
spiit-imllge rangelinder
spot surrounded
by
I
mm-wide
micro-
prism doughnut.
Ro!Ipld &1d
accurate focusing lor subjects
with
both
slralght lines
o!Ind
ill-defined
contours. Suilo!lble
for
general photog-
raphy.
Type
L:
Same as
Type A
screen
bul with split
-imllge range
linder
line at
lI45° &1gle.
Best
for subjects
with horizontal lines.
Type M:
Fine-ground Fresnel
field
with 5.5mm; clear spot and
double
cross
hair for use
In
po!Irallllx focusing
on
o!Ierlal image, plus millimeter
scales for
calculation of
IndiVidual mllgnification
of objects or
for
measuring
objects. Brilllo!lnt imo!lge in dim light. Suitable
for close-ups,
photomicrography
and other
high-magnification
o!Ipplications.
Type
P: SlIme as Type K but with split-Image ro!lngefinder line o!It o!I
45
0
lingle
and
etched horizontal
and
vertical lines
o!IS
an aid to
composition.
Rapid
and accurate focusing
for
subject with horizontal
or
vertical lines
or ill-defined contours. Suito!lble for genero!li photography.
Type
R:
Same liS Type A
but
with
rangeflnder
prisms 01 sloping surfaces
at a smllUer angle and horizontaillnd vertical lines
1
0
aid proper
com-
position
.
Works best with lenses having maximum o!Ipertures
from
113.5
to
1
/5.6.
Type
T:
Matte/Fresnel field
with
split-Image rangeflnder,
l2mm~
re-
ference
circle,
and
horizontal and vertlclillines.
Used
whe
n
preparing
slides for
TV
broadcasts
.
Dotted lines indicate stando!lrd TV screen
format. Solid outline shows "So!Ife
action"
area, whereas broken lines
indicate
nSo!lfe
title"
area.