Nikon 25215 manual Metering, Controlling How the Camera Sets Exposure, B6-Center Weight

Taking Photographs—Exposure

Exposure

Controlling How the Camera Sets Exposure

Metering

The metering method determines how the camera sets exposure:

Method		Description
	1,005-pixel RGB sensor sets exposure based on variety of information
	from all areas of frame. With type G or D lens, camera uses 3D color
	matrix metering II for natural results even when frame is dominated by
3D color	bright (white or yellow) or dark (black or dark green) colors. With other
matrix II/	CPU lenses, 3D range information is not included; instead, camera uses
Color	color matrix metering II. Color matrix metering is available when focal
	length and maximum aperture of non-CPU lens are specified using Non-
matrix II/
Color	CPU lens data item in shooting menu (			128; center-weighted metering
	is used if focal length or aperture is not specified). Matrix metering will
matrix
	not produce desired results with autoexposure lock (				95) or exposure
	compensation (	97), but is recommended in most other situations.
	Camera meters entire frame but assigns greatest weight to area in center
Center-	of frame 8 mm (0.31˝) in diameter, shown by corresponding 8-mm refer-
	ence circle in viewfinder. Classic meter for portraits; recommended when
weighted	using filters with an exposure factor (filter factor) over 1 × (					245).*
	Camera meters circle 3 mm (0.12˝) in diameter (approximately 2% of
	frame). Circle is centered on current focus area (in group dynamic AF, on
	center focus area of current group;		76), making it possible to meter
Spot	off-center subjects (if non-CPU lens is used or if dynamic-area AF with
	closest subject priority is in effect, camera will meter center focus area).

Ensures that subject will be correctly exposed, even when background is much brighter or darker.*

*For improved precision with non-CPU lenses, specify lens focal length and maximum aperture in Non-CPU lens data menu (128).

Before shooting, press the metering selector lock button and rotate the metering selector to choose a method suited to the composition and lighting conditions, and confirm your selection in the viewfinder.

b6—Center Weight (191)

This option controls the size of the area assigned the greatest weight in center- weighted metering.

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