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About the SB-900
Wireless multiple flash
(kD-39)
Advanced Wireless Lighting (kD-43)
In this mode, you can divide the remote flash units into three groups and set the
flash mode and flash output level compensation values separately for each group
as well as the master flash unit.
SU-4-type wireless multiple flash (kD-50)
You can perform SU-4 type wireless multiple flash in two ways: in which the
wireless remote flash units start and stop firing in sync with the master flash unit,
and in which the remote flash units only start firing in sync with the master.
Functions that are set on the camera
Auto FP High-Speed Sync
(kD-55)
The SB-900 automatically fires at faster shutter speeds than the camera’s sync
shutter speed.
FV Lock (Flash Value Lock)
(kD-55)
Since it is possible to lock in the flash exposure level for the subject, you can alter
picture composition while keeping the brightness of the subject constant.
Slow-Sync
(kD-55)
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.
Red-Eye Reduction flash mode/Red-Eye Reduction Slow-Sync
(kD-56)
Red-eye effect, which causes the subject’s eyes to appear red in color photographs,
is reduced.
Rear-Curtain flash sync
(kD-56)
Rear-curtain flash sync creates a picture in which the blur of a moving subject
appears behind the subject and not in front. In this mode, the flash fires just before
the rear curtain starts to close.
Support functions
Power zoom function
(kD-57)
Automatically adjusts the zoom position to match the lens focal length.
Setting the ISO sensitivity
(kD-60)
The ISO sensitivity is automatically set based on information from the camera.
AF-Assist illuminator
(kD-58)
This enables you to perform autofocus flash photography when there is not enough
light for normal autofocus operation.
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