Nikon D3s Technical Manual page 49

h
-Mode Movies
Notes
If On is selected for ISO sensitivity settings > ISO
sensitivity auto control in the shooting menu, ISO
sensitivity will automatically be adjusted for optimal
exposure at the shutter speed selected in the exposure
preview. A m icon in the monitor indicates that On
is selected for Movie settings > High-sensitivity
movie mode. Off is recommended in most situations.
To switch quickly between normal ISO sensitivity and
high-sensitivity movie mode, use My Menu.
Noise reduction is not available during movie record-
ing.
If you exit live view while the exposure preview is dis-
played, the preview will be displayed the next time you
start live view. Changes to settings in the exposure pre-
view remain in eff ect when you exit live view.
AE Lock
AE lock can be used during exposure preview to lock
exposure at the current value or to reduce variations in
exposure. Assigning AE lock (Reset on release) or AE
lock (Hold) to the AF-ON, Fn, Pv, or AE-L/AF-L button al-
lows you to lock exposure while leaving your hands free
for other tasks.
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