SB-900的改良加速電子線路提供了高速回電時間。另外，可透過尼康數位單眼相機更新軔體(全球首創*)，確保閃光燈能更新新技術。當配合尼康數位單眼相機使用，SB-900成為創意閃光系統的核心，它可於無線閃光系統中擔任主控燈或遙控燈，帶領攝影師探索更多創意的機會。

主要功能

多級自動變焦範圍涵蓋17-200mm(SB-800:24-105mm)
3 種照明模式(標準、偏重中央和平均分佈) 配合各種拍攝環境
自動偵測尼康FX格式及尼康DX格式以選擇適合光線分佈
改良加速電子線路提供了高速回電時間，使用4枚AA型電池時與SB-800使用5枚AA型電池的回電時間相約
新的AF輔助照明範圍涵蓋20-105mm，支援Multi-CAM3500 FX/DX 自動對焦感應器
可透過D3及D700更新軔體(全球首創*)
過熱保護系統限制閃光數目防止由連續閃光導致及光部份損壞
自動偵測顏色濾色片(螢光燈或白熾燈)功能，令相機可根據SB-900提供的濾色片資料控制色溫
旋轉式選擇器提升操作性
利用大型LCD點陣螢幕改進用戶介面
反射閃光：向上90度，向下負7度，左或右旋轉180度
由SB-900控制3組遙控SB-900或其他遙控閃光燈，提供先進無線閃光系統及多功能用途
另購的防水套 WG-AS1(D3專用) ，WG-AS2(D300專用)及WG-AS3(D700專用) 可裝在SB-900時保護相機上的熱靴接觸位置

適用機種

D3系列・D3・D3x・D3s・D2系列・D700・D300系列・D300s・D300・D200・D7000・D90・D80・D70s・D70・D5000・D3100・D3000・D60・D50・D40x・D40・F6・P6000・P5100・P5000・E8800・E8400

Electronic 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
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°
Power source		Four AA-size alkaline-manganese (1.5V), lithium (1.5V), Oxyride (1.5V) or Ni-MH (2600 mAh) (rechargeable) (1.2V) 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

These performance specifications are applicable when fresh batteries are used at normal temperature (20°C/68°F). Specifications and design are subject to change without notice.

Oxyride Battery is a registered trademark of Matsushita Electric Industrial Co., Ltd. Products and brand names are trademarks or registered trademarks of their respective companies.

Specifications and equipment are subject to change without any notice or obligation on the part of the manufacturer. July 2008