Nikon SB-910 - Manual (Page 50)

C–11
C
Flash Modes
Non-TTL Auto Flash Mode
t
Checking exposure before taking a picture
Test fi re the Speedlight under the same
conditions and with the same Speedlight
and camera settings before taking the actual
picture.
When the flash-ready indicators blink after •
test firing, underexposure due to insufficient
flash output may have occurred.