Nikon SB-600 Speedlight Flash for Nikon Digital SLR Cameras Easy-to-view LCD with 6 simple-to-understand backlit buttons FV lock holds flash value, enabling recomposition prior to shooting Accurate i-TTL flash control achieved through flash exposure monitoring control Ready light located beside the LCD on the back panel - highly visible even when used as a remote Auto zoom of 24 to 85mm, extendable to 14mm with built-in wide-flash adapter