Features/Specifications - Nikon F25B Photomatic Instruction Manual

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FEATURES/SPECIFICATIONS
Type of camera:
35mm single-lens reflex (SLR)
Picture format:
24mm x 36mm (35mm film format)
Lens mount:
Nikon F mount (bayonet type)
Lenses
available:
Nikkor 50mm f/l.4, f/2
or
55mm
f/l.2
as standard;
more
than 50
Nikkor lenses in
all
Shutter:
Horizontal-travel
focal-plane shutter; speeds of
from
1 to 1/2000
second and "B"; speeds of from 2
to 10
seconds available via
built-in
self-timer;
inter-
mediate settings possible between 1 /80
and 1 /2000
second; shutter release via
shutter
button or
self-timer
Flash
synchronization:
Automatic selection as shutter
speed is
set;
hot-shoe
contact
with built-in
safety
switch provided; one threaded PC terminal provided
for
off-camera
flash operation
Synchronization range:
1
/2000~1
/125
sec.,
1
/30~1
sec.
and
"B"
for FP bulbs; 1/30
~1
sec. and "B" for
M
and
MF bulbs;
1/80~
1
sec. and
"B" for
electronic flash
Accessory
shoe:
Special Nikon-type built into body;
fitted with hot-shoe
contact and electric safety switch
which turns
on
contact
as flash
unit is mounted
Viewfinder:
Interchangeable
eyelevel
pentaprism
type
with bu ilt-in through-the-Iens (TTL) exposure meter
(model DP-3); selected aperture
and shutter
speed in-
dicated below viewfield;
eyepiece
shutter provided
Focusing
screen:
Matte Fresnel field with central split-
image rangefinder
surrounded
by microprism ring;
12mm diameter reference circle defines area of meter
center-weighting; Nikon Type K screen
46
Reflex mirror:
I nstant-return type; lockup lever provided
Exposure metering:
Through-the-Iens, center-weighted,
full -aperture measurement
employing two silicon
photo-
diodes (SPD)
for fast response; exposure correctly set
by
adjusting for illumination of single central
light-
emitting
diode
(LED)
indicator; meter cross-coupled
with both diaphragm
and shutter speed controls;
powered by
two
1.5V
silver-oxide batteries
Metering range:
EV
-
2
~
EV
17 (i.e., f/l.4at 8
seconds~
f/8 at
1/2000
second) with
50mm
f/l.4
lens
and
ASA
100
Film speed scale:
Settings provided
for
ASA 12
~
6400
Lens diaphragm coupling:
Bu ilt-in meter
coupling
pin
for automatic
lenses with maximum
apertures of from
f/1.2 to f/5
.6, meter/diaphragm
coupling of from f/1.2
to
f/32
Film winding:
Via
single-stroke
lever with 120
0
winding
angle and 20° stand-off angle;
lever
also serves as
meter
ON/OFF
switch
Frame counter
:
Shows number
of frames exposed
(ad-
ditive type);
automatically
resets
to
"
S"
(two
frames
before "0") when camera back is
opened
Film rewinding:
Manual via film rewind
crank;
coupling
provided on baseplate for
rewind via
motor drive
Depth-of-field preview:
Via button provided
on front
of
camera
Body finish
:
Satin-chrome and semi-gloss black
Weight:
850g (body only)
Dimensions:
152.5mm x 1 02mm x 66mm

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