Nikon D90 User Manual page 109

• Adjusting Shutter Speed and Aperture
While exposure lock is in effect, the following settings can be adjusted without altering the
metered value for exposure:
Mode
Programmec{auto
Shutter-priority auto
...............
"
-
..
-
"' .
Aperture-priority auto
Setting
shutter
speed
··and~iperture·(fiexjbfeprogra·m;·pg:80)·········_····
Shutter speed
Aperture
The new values can be confirmed in the viewfinder and control panel. Note that the metering
method can not be changed while exposure lock is in effect (changes to metering take effect
when the lock is released) .
• SeeAlso
If On is selected for Custom Setting c1 (Shutter-release button AE-L, pg. 179), exposure will
~
lock when the shutter-release button is pressed halfway. For information on changing the role
~
of the
AE-LIAF-L
button, see Custom Setting f4 (Assign AE-L/AF-L button, pg. 200).
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