Nikon D300 - Manual (Page 303)

277
U
b5: Center-Weighted Area
Note that the diameter is fixed at 8 mm when a non-CPU lens is
used, regardless of the setting selected for [Non-CPU lens data] in
the setup menu (pg. 196).
b6: Fine Tune Optimal Exposure
Use this option to fine-tune the exposure value selected by the
camera. Exposure can be fine tuned separately for each metering
method by from +1 to –1 EV in steps of
1 /
6
EV.
1
Select Custom Setting b6.
Highlight Custom Setting b6
([Fine tune optimal exposure])
and press
2.
When calculating exposure, center-
weighted metering assigns the greatest
weight to a circle in the center of the frame.
The diameter (
φ) of this circle can be set to
6, 8, 10, or 13 mm or to the average of the
entire frame.
Option
M φ 6 mm
L φ 8 mm (default)
N φ 10 mm
O φ 13 mm
P Average