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.
II CLS-Compatible F lashUnits
The camera can be used with the following
CLS-compatible
flash units:
I Ifa color filter
is attached
to the SB-910, SB-900, or SB-700 when AUTOor _ (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.
3 Controlled
remotely
using optional
SB-910, SB-900, SB-800, or SB-700 flash unit or SU-800 wireless
Speedlight
commander,
4 m/if,
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,
• TheSU-800wireless speedlightcommander: W hen mounted
on a CLS-compatible
camera, the SU-800 can be used as a commander
for remote SB-91 O,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.
Guide Number
To calculate
the range of the flash at full power, divide the Guide Number
by the aperture.
For example,
at ISO I00 the SB-800 hasa 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=approximately23
ft 7 in.). For each twofold
increase in ISO sensitivity,
multiplythe
Guide Number
by the square root of two (approximately
1.4).
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