Choose Center-Weighted Metering when you want to base
exposure on either Auto or Manual Exposure control for a
centrally located subject, Selecting Center-Weighted Metering
overrides Matrix Metering and concentrates 60% of the meter's
sensitivity into the center of the viewfinder which is outlined by
a 12mm circle.
This metering system is available with the F4's supplied
standard Multi-Meter Finder DP-20 and the optional AE Action
Finder DA-20.
For selective metering of tiny subjects or for advanced manual
metering techniques, use Spot Metering.
The area metered is represented by the approx. 5mm-diameter
circle in the center of the viewfinder. This metering system is
effective when precise measurement of a special portion of the
subject is required. The spot metering sensor is incorporated
in the F4's body, so Spot Metering is available with any of the
F4's interchangeable viewfinders.