Nikon SB-900 AF Speedlight Flash Features & Technical Specs

THE SB-900 I-TTL SPEEDLIGHT LEADS THE NIKON CREATIVE LIGHTING SYSTEM DELIVERING THE PORTABILITY, POWER AND VERSATILITY TO SUPPORT ANY PHOTOGRAPHER’S CREATIVE LIGHTING IMAGINATION.

Estimated Retail Price	$494.95
Commander Function	Yes
Remote Function	Yes
Guide Number	34 m/111.5 ft. (at ISO 100, 35mm zoom head position, in FX format, standard illumination pattern, 20°C/68°F) to 48 m/157.5 ft. (at ISO 200, 35mm zoom head position, in FX format, standard illumination pattern, 20°C/68°F)
Electronic Construction	Automatic Insulated Gate Bipolar Transistor (IGBT) and series circuitry
Flash Exposure Control	Distance-priority manual flash i-TTL Balanced Fill-Flash with CLS compatible cameras Manual Flash (with Nikon Creative Lighting System digital and 35mm SLR cameras)
Lens Coverage	8 to 11mm (DX-format, Automatic mode with built-in wide-angle panel deployed) 12 to 17mm (FX-format, Automatic mode with built-in wide-angle panel deployed)  12 to 200mm (DX-format, Automatic mode)  17 to 200mm (FX-format, Automatic mode)
Illumination pattern	The light distribution angle is automatically adjusted to the camera's image area in both FX and DX formats Standard Even Center-weighted
Other Available Functions	Test Firing Monitor Pre-flashes AF-assist illuminator Modeling illuminator
Bounce Function (Tilt)	Flash head tilts down to 7° or up to 90° with click-stops at -7°, 0°, 45°, 60°, 75°, 90°.
Bounce Function (Rotate)	Flash head rotates horizontally 180° to the left and right with click-stops at 0°, 30°, 60°, 75°, 90°, 120°, 150°, 180
Minimum Recycling Time	2.3 sec. (approx.) with Ni-MH (2600 mAh) batteries 3.0 sec. (approx.) with Oxyride™ (1.5V) batteries 4.0 sec. (approx.) with Alkaline-manganese (1.5V) batteries 4.5 sec. (approx.) with Lithium (1.5V) batteries
Flash Duration	1/880 sec. at M 1/1 (full) output 1/1100 sec. at M 1/2 output 1/2550 sec. at M 1/4 output 1/5000 sec. at M 1/8 output 1/10000 sec. at M 1/16 output 1/20000 sec. at M 1/32 output 1/35700 sec. at M 1/64 output 1/38500 sec. at M 1/128 output
Power ON/OFF	Rotate the Power ON/OFF switch to turn the SB-900 on or off.
Required Power Source	Four 1.2V Ni-MH (AA-size) batteries Four 1.5V Alkaline-manganese (AA-size) batteries Four 1.5V Lithium (AA-size) batteries
Optional Power Supply	SK-6 Power Bracket Unit SD-8A High-Performance Battery Pack SD-9 High-Performance Battery Pack
Flash-ready Indicator	Rear and Front lights blink: Insufficient light for correct exposure (in i-TTL, Auto Aperture flash, Non-TTL Auto flash, or Distance-priority manual flash operations). Rear lights up and Front blinks: recycled and ready to fire.
Ready Light	Front Back
Flash Compensation	–3.0 EV to +3.0 EV in increments of 1/3 steps in i-TTL auto flash, Auto Aperture flash, Non-TTL auto flash and Distance-priority manual flash modes
Custom Setting	AF-Assist Illumination Modeling Illuminator Monitor pre-flashes Test firing
Minimum Number of Flashes / Recycling Time	110/4.0 – 30 sec. (1.5V Alkaline-manganese) 125/3.0 –30 sec. (1.5V Oxyride™) 165/2.3–30 sec. (Ni-MH (eneloop)) 190/2.3–30 sec. (2600mAh Ni-MH) 230/4.5–120 sec. (1.5V Lithium)
Wireless Flash Modes	Master Master (RPT) Off Remote SU-4
Wireless Communication Channels	Four: 1, 2, 3 and 4Channels
Wireless Groups	Three: A, B and C
Other Functions	Firmware update ISO sensitivity setting Key lock Recalling the underexposure value in the TTL auto flash mode Resetting the settings Thermal cut-out
Dimensions	3.0 x 5.7 x 4.7 in. (78.0 x 146.0 x 118.5mm) (Approx.)
Weight (Approx. without batteries)	14.6 oz. (415g)
Supplied Accessories	·         AS-21 Speedlight Stand ·         SW-13H Diffusion Dome ·         SJ-900 Color Filter Set ·         SZ-2 Color Filter Holder ·         SS-900 Soft Case