Nikon F4 Instruction Manual page 21

Pull film leader across to red film index
mark.
Check to ensure film is properly posi-
tioned with no slack, and close camera
back.
Fully depress shutter release button; film
automatically advances to frame 1.
During film loading, shutter does
not operate, helping save on
battery power. Additionally, the F4
uses a minimum length of film
leader, so you can expect to get a
full 36 exposures and, often, even
more.
21