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3 Recompose the
photograph.
Keeping the AE-L/AF-L button
pressed, recompose the
photograph and shoot.
A Metered Area
In spot metering, exposure will be locked at the value metered in a 4-mm
(0.16 in.) circle centered on the selected focus point.
In center-weighted
metering, exposure will be locked at the value metered in the center of
the viewfinder (the default area for center-weighted metering is an
12-mm circle in the center of the viewfinder).
A Adjusting Shutter Speed and Aperture
While exposure lock is in effect, the following settings can be changed
without altering the metered value for exposure:
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).
A See Also
If On is selected for Custom Setting c1 (Shutter-release button AE-L,
pg. 296), exposure will lock when the shutter-release button is pressed
halfway. For information on changing the role of the AE-L/AF-L button, see
Custom Setting f7 (Assign AE-L/AF-L button, pg. 325).
Exposure mode Settings
e Shutter speed and aperture (flexible program; pg. 117)
f Shutter speed
g Aperture