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EXPOSURE
METERING
SYSTEM
SELECTING METERING SYSTEM
IWl
Matrix Metering
This system
is
ideal for quick operation
in
any exposure mode
(pages 46
to
60). With D-type
AF
Nikkor lenses (including
AF
-S/
AF-I Nikkor lenses), 3D Matrix Metering
is
automatically
activated. 3D Matrix Metering uses three types of data:
(1)
scene
br
ightness,
(2)
scene contrast and
(3)
focused subject's
distance (Distance Information). Data on scene brightness and
contrast are detected by the camera's eight-segment
Advanced Matrix Sensor, while data on the focused subject's
distance is detected and relayed by the D-type
AF
Nikkor lens
in
use.
In
addition, the information sent by the camera's
autofocus system indicating whether the main subject
is
centered is also considered in the computation. By analyzing
these data, the N70's built-in microcomputer
is
able
to
provide
correct exposure even in extremely complex lighting situations.
If
a non-D-type lens
is
used,
Advanc~d
Matrix Metering
is
performed. Although lens' Distance Information
is
not given,
eight-segment Advanced Matrix Sensor provides the correct
exposure
in
most lighting situations.
Note that Matrix Metering system can be used only with lenses
that have a built-in CPU (such as
AF
Nikkor and AI-P lenses.)
43