Red-Eye Reduction/Red-Eye Reduction With Slow-Sync Flash; Rear-Curtain Sync - Nikon autofocus speedlight SB-900 User Manual

Available functions to be set on the camera
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Red-eye reduction/Red-eye reduction with slow-sync fl ash
To prevent your subject's eyes from appearing red in color pictures shot in dim light,
the SB-900 fires three flashes at reduced output just before the picture is taken.
• In the Red-eye reduction with slow sync flash, red-eye reduction is combined
with slow-sync flash.
• Since slow shutter speeds are normally used in red-eye reduction with slow-sync
flash, use of a tripod is recommended to prevent camera shake.
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Rear-curtain sync

In normal flash photography, when shooting fast-moving subjects at slow shutter
speeds, unnatural-looking pictures can occur, because the subject frozen by the
flash appears behind or within the blurred movement (see photo below right).
Rear-curtain flash sync creates a picture in which the blur of a moving subject (for
D
example, the taillights of a car) appears behind the subject and not in front.
• In front-curtain sync, the fl ash fi res immediately after the front curtain opens
completely; in rear-curtain sync, the fl ash fi res just before the rear curtain starts
to close.
• Since slow shutter speeds are usually used, use a tripod to prevent camera shake.
• This function does not operate in Repeating fl ash operation.
• In multiple fl ash, the master fl ash unit can be set to either front-curtain or rear-
curtain sync fl ash. However, the remote units cannot be set to rear-curtain sync
fl ash. (kD-39)
Front-curtain sync
D–56
Rear-curtain sync