Nikon D500 - Manual (Page 228)

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❚❚ Choosing a Flash Mode
To choose the flash mode, press
the
W (M) button and rotate
the main command dial until
the desired flash mode is
selected in the control panel:
1 Y icon flashes if flash unit does not support red-eye reduction.
2 Red-eye reduction with slow sync is available only in exposure modes P and A. In modes S and
M, red-eye reduction with slow sync becomes red-eye reduction.
3 Available only in exposure modes P and A. In modes S and M, slow sync becomes front-curtain
sync.
4 In exposure modes P and A, flash-sync mode will be set to slow rear-curtain sync
when the W (M) button is released.
A Studio Flash Systems
Rear-curtain sync can not be used with studio flash systems, as the
correct synchronization can not be obtained.
W (M) button Main command
dial
Front-curtain sync Red-eye reduction 1
Red-eye reduction
with slow sync 1, 2
Flash off Rear-curtain sync 4 Slow sync 3