Nikon D300 User Manual (en)

Download
113
Z
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 3-mm 
(0.12 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 8-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. 279), 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 f6 ([Assign AE-L/AF-L button], pg. 306).
Exposure mode
Settings
e
Shutter speed and aperture (flexible program; pg. 105)
f
Shutter speed
g
Aperture