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Nikon D90 - Exposure; Metering

Nikon D90
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L-J
Spot
Exposure
Metering
The metering
method
determines
how
the
camera sets exposure. The
following
options are available:
Method
Description
.........
······················IRecommended··in·most·situiitions;··selected·ii·utomiiiicafiy··in·auto··andscene·····
!
3D color imodes. Camera meters a
wide
area
of
the frame and sets exposure according
~
r
matrix
II
i
to
distribution
of
brightness, color, distance, and composition for natural
I
! results.
..
···········!cameram-eterse·n·tireframe
but
assigns greatest·weight
to
center
area
C _ I(defaults
to
8-mm circle in center
of
frame;
can
be selected using Custom
[}8
e~t~r
d!
Setting b3, Center-weighted area, pg. 178). Classic meter for portraits;
welg
te
'recommended
when using filters
with
an
exposure factor (filter factor) over 1x
I(pg. 240).
fCamera meters circle 3.5mm (0.14in.) in diameter (approximately 2.5%
of
!frame). Circle
is
centered on current focus point, making
it
possible
to
meter
ioff-center subjects (if non-CPU lens
is
used,
or
if
Auto-area
is
selected for
AF-
Iarea
mode
as
described on page 173, camera will meter center focus point).
!
!Ensures
that
subject will be correctly exposed, even when background
is
much
_...._.._
J~.r..i.9.~t~r.~~.9.~r.~~r.~.
__
.
..
..
__
.._ .
To
choose a metering method, press
the
::.:
button
and rotate
the
main
command
dial until
the
desired
mode
is
displayed.
3D Color
Matrix
II
Metering
In matrix metering, exposure
is
set using a 420-segment
RGB
sensor.
Use
a
type
G
or
D lens for
results
that
include range information (3D color matrix metering
II;
pg. 228). With
other
CPU
lenses, 3D range information
is
not
included (color matrix metering
II).
87

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