Nikon SB-700 Speedlight Flash The SB-700 is equipped with wireless lighting capability, a feature that is indispensable to creative lighting. Until the SB-700, the SB-900 has been the only Speedlight equipped with a Master function. However, a condensed form of this function has been built into the SB-700, which is also equipped with accessories such as a bounce card and a diffusion dome. With a rated guide number of 28 m at ISO 100 and 35mm, the Nikon SB-700 Speedlight is a moderately compact flash unit packed with features for high-performance on-camera lighting capabilities. The flash is compatible with the i-TTL system for automatic metering with both FX- and DX-format cameras and is optimized for use with Nikon's Creative Lighting System for complete control over your lighting setup. Additionally, the auto zoom head has a coverage range of 24-120mm with FX-format cameras which can be extended down to 12mm with the use of the built-in wide-angle diffusion panel. Light distribution angle is automatically adjustable to the camera's image area in both FX and DX formats, Auto zoom head reaches from 24-120mm with FX format and 14-120mm with DX format. Auto zoom head reaches from 24-120mm with FX format and 14-120mm with DX format Light distribution angle is automatically adjustable to the camera's image area in both FX and DX formats Automatic color filter detection for adjusting the camera's color temperature settings and an optional color filter pack is available Specifications: Exposure Control Manual, i-TTL TTL Dedication Yes Vari-Power 1/1 - 1/128 Bounce Head -7 to +90 Swivel Head 360 Coverage Angle of Coverage: 60 - 18 Vertical78 - 25 HorizontalWide-Angle Adapter: 120 - 100 VerticalWide-Angle Adapter: 130 - 110 Horizontal Range Zoom Range: 24-120mm (12mm with Panel)Distance Range: 0.61 to 20.12 m Recycle Time Approximately 2.5 - 3.5 seconds Compensation -3 EV to +3 EV(in 1/3 EV steps) Wireless Commander Mode for Wireless TTL ControlOperation Method: Optical pulseOperation Distance: Up to 10 mOperation Mode: Commander, SlaveCommunication Channels:4 ChannelsGroups:2 Groups Power Source AA(Alkaline, Lithium, Rechargeable NiMH Batteries) x4 Mount Shoe Dimensions (WxHxD) 7.1 x 12.6 x 104.5 cm Weight 0.36 kg