Nikon D800, D800E The Nikon Creative Lighting System (CLS), ❚❚CLS-CompatibleFlash Units, SU-800, AGuide Number, •The SB-910, SB-900, SB-800, SB-700, SB-600, SB-400,and SB-R200:

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, and SB-R200:

Flash unit
Feature		SB-910 1	SB-900 1	SB-800	SB-700 1	SB-600	SB-400 2	SB-R200	3
Guide	ISO 100	34/111	34/111	38/125	28/92	30/98	21/69	10/33
No. 4	ISO 200	48/157	48/157	53/174	39/128	42/138	30/98	14/46

1If a color filter is attached to the SB-910, SB-900, or SB-700 when vor 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 with the SB-400.

3Controlled remotely with built-in flash in commander mode or using optional SB-910, SB-900, SB-800, or SB-700 flash unit or SU-800 wireless Speedlight commander.

4m/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.

•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.

AGuide 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	n
sensitivity, multiply the Guide Number by the square root of two
(approximately 1.4).

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