Nikon F 4 - Exposure Compensation; AE-L (Auto Exposure Lock) Button

EXPOSURE COMPENSATION
In Automatic Exposure Modes
AE-L (Auto Exposure Lock) Button
1. Set exposure mode to Programmed (Рн, Р), Shutter-Priority
Auto (S) or Aperture-Priority Auto (A).
2. Center main subject inside viewfinder
or move in closer.
3. Lightly press shutter release button, and confirm shutter
speed and aperture in the viewfinder.