Nikon D4S - Manual (Page 218)

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The Nikon Creative Lighting System (CLS)
Nikon’s advanced Creative Lighting System (CLS) offers improved
communication between the camera and compatible flash units
for improved flash photography.
❚❚CLS-Compatible Flash Units
The camera can be used with the following CLS-compatible flash
units:
• The SB-910, SB-900, SB-800, SB-700, SB-600, SB-400, SB-300, and SB-R200:
• SU-800 Wireless Speedlight Commander: When mounted on a CLS-
compatible camera, the SU-800 can be used as a commander for
remote SB-910, SB-900, SB-800, SB-700, SB-600, or SB-R200 flash
units in up to three groups. The SU-800 itself is not equipped
with a flash.
Flash unit
SB-910 1 SB-900 1 SB-800 SB-700 1 SB-600 SB-400 2 SB-300 2 SB-R200 3 Feature
Guide
No. 4
ISO 100 34/111 34/111 38/125 28/92 30/98 21/69 18/59 10/33
ISO 200 48/157 48/157 53/174 39/128 42/138 30/98 25/82 14/46
1 If a color filter is attached to the SB-910, SB-900, or SB-700 when v or
N (flash) is selected for white balance, the camera will automatically detect the
filter and adjust white balance appropriately.
2 Wireless flash control is not available.
3 Controlled remotely with optional SB-910, SB-900, SB-800, or SB-700 flash unit
or SU-800 wireless Speedlight commander.
4 m/ft, 20 °C (68 °F), SB-910, SB-900, SB-800, SB-700, and SB-600 at 35 mm zoom
head position; SB-910, SB-900, and SB-700 with standard illumination.
A
Guide Number
To calculate the range of the flash at full power, divide the Guide
Number by the aperture. If, for example, the flash unit has a Guide
Number of 34 m or 111 ft (ISO 100, 20 °C/68 °F); its range at an aperture
of f/5.6 is 34÷5.6 or about 6.1 meters (or in feet, 111÷5.6=approximately
19 ft 10 in.). For each twofold increase in ISO sensitivity, multiply the
Guide Number by the square root of two (approximately 1.4).