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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. The camera can be used with the
following CLS-compatible flash units:
❚❚The SB-900, SB-800, SB-600, SB-400, 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-900, SB-800, SB-600, or
SB-R200 flash units.
The SU-800 itself is not equipped with a
flash.
Flash unit
SB-900
1
SB-800 SB-600 SB-400 SB-R200
2
Feature
Guide
No.
3
ISO 100 34/111 38/125 30/98 21/69 10/33
ISO 200 48/157 53/174 42/138 30/98 14/46
1 If a color filter is attached to the SB-900 when v or N (flash) is selected for
white balance, the camera will automatically detect the filter and adjust white
balance appropriately.
2 Controlled remotely with optional SB-900 or SB-800 flash unit or SU-800
wireless Speedlight commander.
3 m/ft., 20 °C (68 °F), SB-900, SB-800, and SB-600 at 35 mm zoom head position;
SB-900 with standard illumination.
A Guide Number
To calculate the range of the flash at full power, divide the Guide
Number by the aperture.
For example, at ISO 100 the SB-800 has a Guide
Number of 38 m or 125 ft. (35mm zoom head position); its range at an
aperture of f/5.6 is 38÷5.6 or about 6.8 meters (or in feet,
125÷5.6=approximately 23 ft. 7 in.).
For each twofold increase in ISO
sensitivity, multiply the Guide Number by the square root of two
(approximately 1.4).