Nikon d3s User Manual (en)

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Notes on Optional Flash Units
Refer to the flash unit manual for detailed instructions. If the unit 
supports CLS, refer to the section on CLS-compatible digital SLR 
cameras. The D3S is not included in the “digital SLR” category in the 
SB-80DX, SB-28DX, and SB-50DX manuals.
i-TTL flash control can be used at ISO sensitivities between 200 and 
12800. At values over 12800, the desired results may not be achieved at 
some ranges or aperture settings. If the flash-ready indicator blinks for 
about three seconds after a photograph is taken, the flash has fired at 
full power and the photograph may be underexposed. View the 
photograph in the monitor; if it is underexposed, adjust aperture, ISO 
sensitivity, or the distance to the subject and try again.
When an SC-series 17, 28, or 29 sync cable is used for off-camera flash 
photography, correct exposure may not be achieved in i-TTL mode. We 
recommend that you select standard i-TTL flash control. Take a test shot 
and view the results in the monitor.
In i-TTL, use the flash panel or bounce adapter provided with the flash 
unit. Do not use other panels such as diffusion panels, as this may 
produce incorrect exposure. The D3S supports power zoom with the 
following optional flash units: the SB-900, SB-800, and SB-600. Power 
zoom is not supported with other flash units.