Nikon F4 Instruction Manual page 108

Frame counter
Two additive types provided - on top
of camera and inside viewfinder
(LCD)
Film rewind Choice of automatic or manual; au-
tomatically rewinds when film rewind
levers (R1) and (R2) are used; takes
approx. 8 sec. per 36-exposure roll
(with six AA-type batteries); stops
automatically when film is rewound;
manual rewind when R1 lever is used
Self-timer Electronically controlled 10 sec. ex-
posure delay; blinking LED indicates
self-timer operation; cancelable
Camera back
Hinged back; interchangeable with
Nikon Multi-Control Back MF-23 or
Data Back MF-22
Accessory shoe Standard ISO-type hot-shoe contact;
ready-light contact, TIL flash contact,
monitor contact
Flash synchronization
1/60 to 1/250 sec. in PH , P or A
mode; in M or S mode, shutter fires
at speed set, and when set from
1/250 to 1/8000 sec., shutter is auto-
matically set to 1/250 sec.; down to
30 sec. shutter is available by using
SB-24 in rear-curtain sync in PH, P or
A mode
108
Flash ready-light
Autofocus flash
photography
Power source
Viewfinder LED lights up when Nikon
dedicated speedlight is ready to fire;
blinks to warn of poor
cameral
speed light con nection or insufficient
light for correct exposure
Possible with Nikon Autofocus
Speed lights SB-24, SB-23, SB-22 or
SB-20
Nikon High Speed Battery Pack
MB-21 (six AA-type alkaline-manga-
nese or NiCd batteries), Battery
Pack MB-20 (four AA-type alkaline-
manganese batteries), External
Power Regu lator MB-22
Number of 3S-exposure film rolls per set of fresh
baHeries
Batteries
At 20°C At -10°F)
(S8°F) (14°F)
High Speed Bat-
Alkaline-manganese (LR6) approx.90 approx. 15
tery Pack MB-21
NiCd batteries (NiCd) approx.70 approx. 35
Battery Pack
Alkaline-manganese (LR6) approx.30 approx. 5
MB-20
"For Continuous Servo Autofocus With AF Zoom-Nlkkor 35-70mm
f/3 .3-f/4.5
lens, film advance mode selector at CH and a shutter speed
of 1/250 sec. or faster.