Vivitar RGPRO-648 Series 1 Digital TTL Shoe Mount Autofocus Flash for Nikon i-TTL

The Vivitar RGPRO648 Shoe Mount Flash is an economical full-TTL enabled flash with support for digital SLR cameras. It features a powerful Guide Number of 148'/45 m at 85mm, and features a power-zoom flash head that covers a focal range from 24mm to 85mm. The flash includes a built-in slave function which allows it to be positioned off-camera, and triggered by any second flash. You can also manually adjust the power level of the flash output from full-power down to 1/16th. It is the perfect economical all-purpose flash for any digital or 35mm SLR shooter.