Nikon D300 User Manual (en)

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100
Z
Metering
Metering determines how the camera sets exposure. The 
following options are available:
Method
Description
a
3D color 
matrix II
Recommended in most situations. Camera meters a wide area 
of the frame and sets exposure according to distribution of 
brightness, color, distance, and composition for natural 
results.
Z
Center-
weighted
Camera meters entire frame but assigns 
greatest weight to area in center of 
frame (defaults to 8-mm circle in center 
of viewfinder; if CPU lens is attached, 
area can be selected using Custom 
Setting b5, [Center-weighted area], 
pg. 277). Classic meter for portraits.
1
b
Spot
Camera meters circle 3 mm (0.12 in.) in 
diameter (approximately 2% of frame). 
Circle is centered on current focus 
point, making it possible to meter off-
center subjects (if non-CPU lens is used 
or if Auto-area AF is in effect (pg. 64), 
camera will meter center focus point). 
Ensures that subject will be correctly 
exposed, even when background is 
much brighter or darker.
1
1 For improved precision with non-CPU lenses, specify lens focal length and 
maximum aperture in [Non-CPU lens data] menu (pg. 197).
2 Metered area is not actually displayed in viewfinder.
Center weight area
2
Spot metering 
area
2