Nikon D4S Manuel D’Utilisation

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Autoexposure (AE) Lock
Use autoexposure lock to recompose photographs after using 
center-weighted metering and spot metering (
exposure. Note that matrix metering will not produce the desired 
results.
1
Lock exposure.
Position the subject in the selected 
focus point and press the shutter-
release button halfway. With the 
shutter-release button pressed halfway 
and the subject positioned in the focus 
point, press the center of the sub-
selector to lock exposure (if you are 
using autofocus, confirm that the 
I in-
focus indicator appears in the 
viewfinder).
While exposure lock is in effect, an AE-L 
indicator will appear in the viewfinder.
2
Recompose the 
photograph.
Keeping the center of the sub-
selector pressed, recompose 
the photograph and shoot.
Shutter-release 
button
Center of sub-
selector