Nikon D610 - Manual (Page 319)

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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.
Refer to the documentation provided with the flash unit for details.
❚❚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 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.
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).