Notes On Continuous Flash Shooting; A Note On Microcomputer-Controlled Speedlights - Nikon SB-400 Manuel D'utilisation

Reference information

Notes on continuous flash shooting

En
WARNING
Max. number of continuous firings
Flash mode
i-TTL auto flash
Manual flash (Flash output level: M1/1, M1/2)
Manual flash (Flash output level: M1/4 to M1/128)

A note on microcomputer-controlled Speedlights

The Speedlight incorporates a microcomputer to control flash operations. In
rare cases, the Speedlight may not work properly even after a fresh battery is
properly installed. If this happens, replace the battery while the Speedlight's
power is turned on.
20
Do not exceed the maximum number of continuous
firings
You should allow the SB-400 to cool off for at least 10 minutes after
the maximum number of continuous firings are performed as shown
in the table below:
Max. number of continuous
firings
15
40