Specifications

Three illumination patterns (standard, center-weighted and even) are available to match each shooting environment
Automatically detects Nikon FX and Nikon DX formats and selects suitable light distribution
Improved booster circuit for high-speed recycle time: Recycle time using four AA-size batteries is almost equal to the SB-800 with five AA-size batteries
New AF-Assist illumination covers a wide 20-105 mm focal range compatible with the new Multi-CAM3500 FX/DX AF sensor
Firmware update via Nikon D3 and D700 is possible (world’s first*)
Thermal Cut-out function limits the number of flashes to avoid deterioration of light emitting parts caused by continuous flash firing
Automatically detects color filters (fluorescent or incandescent), enabling camera to control color temperature according to filter information from SB-900
Improved switch panel for enhanced usability
Improved GUI using a large-size LCD dot panel
Bounce capability: tilts up to 90º, down to -7º, rotates horizontally 180º to right and left
Advanced Wireless Lighting and versatile functions for up to three remote groups of SB-900s or other compatible Speedlight controlled through the master SB-900
Optional Water Guard WG-AS1 (for D3), WG-AS2 (for D300), and WG-AS3 (for D700) is useful for protecting the camera's hot shoe contact when the SB-900 is mounted on these Nikon digital SLR cameras

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