Nikon Autofocus Speedlight SB-24 - Manual (Page 67)

REAR-CURTAIN SYNC FLASH-For Natural Light Flows
IS ea ^I normali
When used with the F4 or F-801/N8008, the SB-24 lets you
synchronize the flash to the instant before the rear (second)
curtain begins to close.
Set the SB-24’s flash sync mode selector to ‘'REAR." This turns
available light into a stream of light that follows the flash-illumi­
nated moving subject.
Rear-curtain sync flash photography is most effective with
slower shutter speeds. Although the slowest possible shutter
speed for front-curtain sync flash photography in TTL mode
(with camera at PD, P, PH or A) is only 1/60 second, with rear-
curtain sync flash photography, depending on the background,
you can slow the shutter down to 30 seconds.
• In shutter-priority auto or manuat exposure mode, be sure to
seiect an appropriate shutter speed, in programmed auto or
aperture-priority auto exposure mode, confirm shutter speed is
not too stow. Otherwise, it couid affect image sharpness. To
prevent camera shake, use a tripod.
• Rear-curtain sync fiash is avaiiabie when Hash mode selector
is set to TTL, A or M.
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