Nikon has reimagined both on- and off-camera lighting with the SB-5000 AF Speedlight, which brings revolutionary radio control to the Creative Lighting System with Advanced Wireless Lighting and comes equipped with a world's first shoe-mounted flash cooling system that enables up to 100 consecutive full-power flashes. These features alone are enough to put it at the top of the speedlight heap, but the SB-5000 doesn't rest and provides a powerful guide number of 113' at ISO 100 and 35mm while also shrinking in overall size compared to its predecessors. Of course, the SB-5000 AF Speedlight is fully compatible with Nikon's i-TTL automatic exposure system found in a majority of their cameras for fast, accurate operation. The radio control implemented in the SB-5000 requires a compatible DSLR using the WR-A10 Wireless Remote Adapter and WR-R10 Wireless Remote Controller in order to fully realize the power of the system. This enables the camera and flash to wirelessly control up to six groups of flashes from up to 98' away, without requiring any line of sight. Also, the SB-5000 and the radio system are fully compatible with the existing optical triggering method of older units and can even be mixed and matched for maximum versatility. Designed for reliability as well as versatility, the innovative built-in cooling system of the SB-5000 is a first for shoe-mounted flashes. It vents heat quickly and efficiently, allowing you to fire up to 100 consecutive full power flashes without issue. It also means that the flash can be made smaller without compromising performance. This new design also ensures speedy and intuitive operation, implementing an Info button for fast access to some of your most commonly used settings. As a standard flash the SB-5000 will not disappoint, providing a wide ranging zoom head of 24-200mm which can be extended down to 14mm with use of the built-in diffusion panel. The head will also tilt from -7 to +90° and rotate left and right 180° for complete bounce capabilities. Full sync mode support is available with slow, high-speed, 1st and 2nd curtain options. The flash has a quick recycle time of 1.8-2.6 seconds and runs on four AA batteries. It can be powered by select external battery packs. A PC terminal can be found on the SB-5000 for further triggering options and it comes with a stand, diffusion dome, fluorescent and incandescent filters, and a soft case.