Reference Manual (complete instructions)

C-17
En-01
C
Flash Modes
v When insufficient flash output for correct exposure is
indicated
When the flash-ready indicators on
the SB-5000 and in the cameras
viewfinder flash slowly for approx.
3 seconds after firing, underexposure
due to insufficient flash output may
have occurred.
To compensate, use a wider aperture
(smaller f-number) or higher ISO
sensitivity and reshoot.