This Nikon Shoe Mount Flash provides the professional with sophistication and power, on camera, in studio, or on location. The Nikon Speedlight SB 910 is designed for FX and DX-format D-SLRs and COOLPIX P7000 Series cameras. Where this Speedlight Flash really shines is its versatility as a hot shoe mounted Speedlight, remote unit, or wireless Commander. When using CLS compatible D-SLRs, the Nikon Speedlight SB 910 makes handy, wireless programming work for up to three groups of other flash sets. Sporting guide numbers of 34 m (111.5 ft) for standard ISO 100, and 48 m (157.5 ft) for ISO 200, the Nikon Shoe Mount Flash masters the shooting scene. At full output, the Speedlight Flash shines for 1/880 s, down to 1/38500 s at 1/128 output. Convenient to power with AA-size batteries, the Nikon Speedlight SB 910 also takes supplemental SK-6, SD-9, or SD-8A battery packs for extended occasions. With a simple graphical user interface for programming, wireless remote control, and advanced protection against overheating, the Nikon Speedlight SB 910 is a dream for the serious photographer.