Nikon D4S - Manual (Page 210)

188
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Preserving Detail in Highlights
and Shadows
Active D-Lighting
Active D-Lighting preserves details in highlights and shadows,
creating photographs with natural contrast. Use for high contrast
scenes, for example when photographing brightly lit outdoor
scenery through a door or window or taking pictures of shaded
subjects on a sunny day.
It is most effective when used with
matrix metering ( 0 123).
Active D-Lighting off Active D-Lighting: Y Auto
A
“Active D-Lighting” versus “D-Lighting”
The Active D-Lighting option in the shooting menu adjusts exposure
before shooting to optimize the dynamic range, while the D-Lighting
option in the retouch menu (
0 379) brightens shadows in images after
shooting.