Nikon  SB-910 Speedlight  

78.5mm x 145mm x 113mm / 3.1" x 5.7" x 4.4"

4 x Standard battery AA type

• Fully compatible with Nikon Creative Lighting System
• Three illumination patterns (standard/even/center-weighted), with increased light distribution accuracy, are available to match every shooting environment
• Automatically detects Nikon FX and Nikon DX formats and selects suitable light distribution angles
• Power zoom function covers wide 17-200 mm (in FX format) or 12-200 mm (in DX format) zoom ranges
• AF-assist illumination, compatible with multi-point AF system, covers wide 17-135 mm focal length range
• New MENU button enables quick access to custom settings, while improved LCD panel GUI (graphical user interface) enhances operability
• Durable and heat-resistant, easy-to-use, hard-type color filters (fluorescent or incandescent) included
• Automatically detects color filter types and transmits filter information to camera for optimum white balance setting
• Guide number: 34/111.5 (m/ft.) at 35 mm and 53/173.9 (m/ft.) at 200 mm (FX-format, standard illumination pattern, ISO 100, 20°C/68°F)
• Minimum recycling time: approx. 2.3 seconds with Ni-MH batteries
• Automatically detects increases in flash head temperature and controls recycling time accordingly, thus preventing overheating
• Firmware updates via Nikon digital SLR cameras
• Compatible with High-Performance Battery Pack SD-9 and Power Bracket Unit SK-6/6A
• Optional Water Guards WG-AS1 (for D3 series), WG-AS2 (for D300 series) and WG-AS3 (for D700) protect camera accessory shoe contact when SB-910 is mounted on Nikon digital SLR cameras 

34/111.5 (ISO 100, m/ft), 48/157.5 (ISO 200, m/ft)

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°, 75°, 90°, 120°, 150°, 180°

approx. 2.3 seconds with Ni-MH batteries

Nikon