Available Flash Modes; Slow-Sync Flash/Red-Eye Reduction/Red-Eye Reduction With Slow-Sync Flash Mode/Rear-Curtain Sync/Fv (Flash Value) Lock/Exposure Compensation And Flash Output Level Compensation/Manual Mode - Nikon Speedlight SB-400 User Manual

Available flash modes

The SB-400's available flash modes vary, depending on the
cameras and lenses in use or the camera's exposure mode.
• Each mode should be set on the camera body, since it cannot
be set through the SB-400. For details, see you camera user's
manual.
• For shooting with slow shutter speeds, use of a tripod is
recommended.
Slow-sync flash
The flash is controlled at a slow shutter speed to obtain the
correct exposure for both the main subject and background in
low-light situations or at night.
Red-eye reduction
To prevent the center of your subject's eyes from appearing red in
color pictures, the SB-400 fires three flashes at reduced output
just before the picture is taken.
Red-eye reduction with slow-sync flash mode
In this mode, red-eye reduction is combined with slow-sync.
Rear-curtain sync
Rear-curtain flash sync creates a picture in which the blur or a
moving subject appears behind the subject and not in front.
FV (Flash Value) Lock
Flash Value, or "FV", is the amount of flash exposure for the
subject. Using FV Lock you can lock in the appropriate flash
exposure for the main subject.
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