Nikon D300S User Manual page 202

D
Flash Control Mode
The information display shows the flash control mode for the built-in
flash (Built-in) and for optional flash units attached to the camera
accessory shoe (Optional) as follows:
2
TTL
Auto FP (0 281)
Repeating flash
Commander mode
1 Available with SB-900 and SB-800 only.
2 Flash control mode for built-in flash can be selected using Custom Setting e3
(Flash cntrl for built-in flash, 0 283).
D
See Also
See Custom Setting e1 (Flash sync speed, 0 281) for information on
flash sync speeds as fast as
l
176
i-TTL
Built-in Optional
—
2
— —
2
1
/ s.
320
1
/
Auto aperture (AA)
non-TTL auto flash (A)
Built-in Optional
—
—
— —
—
Manual
Built-in Optional
—