Nikon Z 8 Reference Manual page 415

6
C/f: Compose the shot and arrange the flash units.
See the documentation provided with the flash units for more information.
Test-fire the units and confirm that they are functioning normally. To test-fire the units, use
the [Test flash] item in the i menu, which can be added to the menu using Custom Setting
f1 [Customize i menu].
7
C/f: Take the photograph after confirming that the flash-ready lights for all flash units
are lit.
Tip: Flash Info
Quick wireless control settings can be viewed using the [Flash info]
item in the imenu, which can be added to the menu using Custom
Setting f1 [Customize i menu].
Remote Repeating (SB‑5000 Only)
The flash units fire repeatedly while the shutter is open, producing a multiple-exposure effect.
1
C: Select [Remote repeating] for [Flash control] > [Remote
flash control].
2
C: Highlight [Remote repeating options] in the [Flash
control] display and press 2.
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Optical AWL