lectronic construction
Automatic Insulated Gate Bipolar Transistor (IGBT) and series circuitry
Guide number (20°C/68°F)
34/111.5 (ISO 100, m/ft), 48/157.5 (ISO 200, m/ft)
Illumination pattern
Three illumination patterns: standard, even and center-weighted
The light distribution angle is automatically adjusted to the camera’s image area in both FX and DX formats
Flash shooting distance range
0.6 m to 20 m (2 to 66 ft) (varies depending on camera image area setting, illumination pattern, ISO sensitivity, zoom position, and lens aperture)
Flash mode
TTL, Auto Aperture flash, Non-TTL auto flash, Distance-priority manual flash, Manual flash, Repeating flash
Other functions
Test firing, monitor pre-flashes, AF-assist illuminator, and Modeling illuminator
Multiple flash operation
Advanced Wireless Lighting, SU-4 type wireless multiple flash
Compatible cameras
All cameras compatible with Nikon Creative Lighting System (other cameras can be used but functionality is reduced)
Flash exposure control set on the camera
Camera’s sync modes: Slow-sync, Red-eye reduction in slow-sync, Rear-curtain sync, Rear-curtain slow-sync
Shooting functions: Auto FP High-Speed sync, FV Lock flash
Bounce capability
Flash head tilts down to -7° or up to 90° with click-stops at -7°, 0°, 45°, 60°, 75°, 90°
Flash head rotates horizontally 180° to the left and right with click-stops at 0°, 30°, 60°, 90°, 120°, 150°, 180°
ON/OFF
Press the Power ON-OFF switch to turn the SB-900 on or off
Standby function can be set
Power source/min. recycle time/no. of flashes (at full output)
With fresh batteries (These data may vary depending on battery condition)
Two AA-size penlight batteries (1.5V or lower) of the following types (Batteries : Min. recycle time (approx.) / Min number of flashes / interval between full flash output and ready light on *) :- Alkaline-manganese (1.5V) : 4.0 sec. / 110 / 4.0-30 sec.
– Lithium (1.5V) : 4.5 sec. / 230 / 4.5-120 sec.
– Oxyride (1.5V) : 3.0 sec. / 125 / 3.0-30 sec.
– Ni-MH (2600 mAh) (rechargeable) (1.2V) : 2.3 sec. / 190 / 2.3-30 sec.
* When firing the Speedlight at full output once every 30 seconds (120 seconds with lithium batteries.)
Ready light
The SB-900 is fully recycled: Rear ready-light lights up and front light blinks
Insufficient light for correct exposure (in i-TTL, Auto Aperture flash, Non-TTL Auto flash, or Distance-priority manual flash operations): ready-lights and front lights blink after shooting
Flash duration
Approx. 1/880 sec. at full output
Mounting foot lock lever
Provides secure attachment of SB-900 to camera’s accessory shoe using locking plate and mount pin to prevent accidental detachment.
Dimensions (W x H x D)
Approx. 78.0 x146.0 x 118.5 mm (3.0 x 5.7 x 4.7 in.)
Weight (without batteries)
Approx. 415 g (14.6 oz.)
Supplied accessories
Speedlight Stand AS-21, Nikon Diffusion Dome SW-13H, Color Filter Set SJ-900, Color Filter Holder SZ-2, Soft Case SS-900
Optional accessories
Color Filter Set SJ-3, Water Guard WG-AS1/WG-AS2/WG-AS3, High-Performance Battery Pack SD-9, Wireless Slave Flash Controller SU-4, TTL Remote Cord SC-28/SC-29