Nikon 2SB Photomic Instruction Manual - Page 42
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Print PageCHANGING THE FOCUSING SCREEN-continued
Focusing Screen Selector Guide
D
42
Typ
e
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.
Ty pe 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.
Type
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
Fresnel
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.
Type
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.
Type
K: Combination of Type A and
J
screens.
Matte Fresnel field with
3mm¢
spli
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.
Type M: Fine
ground
Fresnel
field
with
5.5mm</>
clear spot and double cross
hair
for
use
in parallax
focusing on aeria
l
image,
plus
millimeter
scales for
calculation of individual magnification of
objects
or
for measuring
objects. Brilliant
image in dim
light.
Suitable for
close-ups,
photomicrography and
other high-magnification applications.
Type P
:
Same as Type K but with
split-image
rangefinder
line
at
a 45
0
angle
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
.
Type
R
:
Same as
Type A but
with
rangefinder
prisms
of sloping surfaces at a smaller angle and
horizontal and vertical
lines to
aid
proper
composi-
tion.
Wor
ks best with lenses having maximum
aperture of from
f/3.5
to
f/5.6