Nikon d3s User Manual (en)

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311
U
This option controls flash sync speed.
e: Bracketing/Flash
e1: Flash Sync Speed
G button
➜ A Custom Settings menu
Option
Description
1/250 s 
(Auto FP)
Use auto FP high-speed sync with SB-900, SB-800, SB-600, 
and SB-R200 flash units. If other flash units are used, shutter 
speed is set to 
1
/
250
s. When the camera shows a shutter 
speed of 
1
/
250
s in exposure mode e or g, auto FP high-
speed sync will be activated if the actual shutter speed is 
faster than 
1
/
250
s.
1/250 s
1/60 s Flash sync speed set to selected value.
A
Fixing Shutter Speed at the Flash Sync Speed Limit
To fix shutter speed at the sync speed limit in shutter-priority auto or 
manual exposure modes, select the next shutter speed after the slowest 
possible shutter speed (30 s or bulb). An X (flash sync indicator) will be 
displayed in the viewfinder and top control panel.
A
Auto FP High-Speed Sync
Allows the flash to be used at the highest shutter speed supported by 
the camera, making it possible to choose the maximum aperture for 
reduced depth of field even when the subject is backlit in bright 
sunlight. The information display flash mode indicator shows “FP” when 
auto FP high-speed sync is active.