Bower SFD14N Digital Macro Ring Flash for Nikon Digital SLR Cameras Bounce and swivel zoom head allows versatile reflection for difficult lighting conditions Guide Number: 46 feet (50mm @ ISO 100) For Macro, Medical and Hobby Photography Compatible with all Nikon models including: D2X/Xs, D2Hs, D2X, D200, D3X/3S, D40/40X, D300S, D3000, D3100, D700, D7000, D5000, D5100, D50, D60, D70s, D80, D90 EV exposure control that synchs with Nikon SLR cameras