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The nikon creative lighting system (cls), Cls-compatible flash units – Nikon D3100 User Manual

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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-900, SB-800, SB-600, SB-400, and SB-R200:

• The 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 in up to three groups. 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 AUTO or

N (flash) is selected for white balance, the

camera will automatically detect the filter and adjust white balance appropriately.

2 Controlled remotely using 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. (35 mm 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).