Nikon D300s - Manual (Page 308)

282
U
Flash Control at 1/320 s (Auto FP)
When
1/320 s (Auto FP) is selected for Custom Setting e1 (Flash
sync speed, 0 281), the built-in flash can be used at shutter
speeds as fast as
1 /
320
s, while optional SB-900, SB-800, SB-600, and
SB-R200 flash units can be used at any shutter speed (Auto FP High-
Speed Sync).
This option determines the slowest shutter
speed available when using front- or rear-
curtain sync or red-eye reduction in
programmed auto or aperture-priority auto
exposure modes (regardless of the setting
chosen, shutter speeds can be as slow as 30 s
in shutter-priority auto and manual exposure modes or at flash
settings of slow sync, slow rear-curtain sync, or red-eye reduction
with slow sync). Options range from
1 /
60
s (
1/60 s) to 30 s (30 s).
Flash sync speed 1/320 s (Auto FP) 1/250 s (Auto FP) 1/250 s
Shutter speed
Built-in
flash
Optional
flash unit
Built-in
flash
Optional
flash unit
Built-in
flash
Optional
flash unit
1 /
8,000
– 1 /
320
s — Auto FP — Auto FP — —
1 /
320
– 1 /
250
s Flash sync * — Auto FP — —
1 /
250
–30 s Flash sync
* Flash range drops as shutter speed increases. Flash range will nevertheless
be greater than that obtained at the same speeds with Auto FP.
D The Flash-Ready Indicator
When the flash fires at full power, the flash-indicator in the camera
viewfinder will blink to warn that the resulting photograph may be
underexposed. Note that the flash-ready indicators on optional flash
units will not display this warning when
1/320 s (Auto FP) is selected.
e2: Flash Shutter Speed
G
button ➜ A Custom Settings menu