Nikon F 4 - Exposure Metering Systems; Matrix Metering

EXPOSURE METERING SYSTEMS
This system is ideally suited for quick operation and for the
most dependable Auto Exposure control. It can also be used
for Manual metering and flash exposure control operation with
any Nikon TTL speedlight.
In Matrix Metering, the meter automatically provides the main
subject with correct exposure in virtually any lighting situation,
without the need of manual exposure compensation. The Matrix
Metering sensor determines scene brightness by dividing the
scene into five areas, analyzing each area for brightness and
scene contrast.
This metering system is available with the F4's supplied
standard Multi-Meter Finder DP-20.
Sensitivity of Five Segments