Nikon SB-910 - Manual (Page 108)

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E
Functions
Functions to Be Set on the Camera
Rear-curtain sync
In normal fl ash photography, when photographing fast-moving subjects at low
shutter speeds at night, pictures can appear unnatural because the subject frozen
by the fl ash appears behind or within the blurred movement. Rear-curtain sync fl ash
creates a picture in which the blur of a moving subject appears behind the subject
and not in front.
In front-curtain sync, the flash fires immediately after the front curtain is fully •
open; in rear-curtain sync, the flash fires moments before the rear curtain starts
to close.
Since low shutter speeds are normally used, use of a tripod is recommended to
•
prevent camera shake.
Rear-curtain sync does not operate in repeating flash mode.
•
Front-curtain sync Rear-curtain sync