Nikon Df User Manual page 138

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:
Flash unit
Feature
ISO 100 34/111 34/111 38/125
4
Guide No.
ISO 200 48/157 48/157 53/174 39/128 42/138
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.
• 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.
l
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).
118
1 1
SB-910 SB-900 SB-800
1
SB-700 SB-600 SB-400
28/92 30/98 21/69
30/98
2 2 3
SB-300 SB-R200
18/59 10/33
25/82 14/46