Power Zoom Flash For Nikon I-TTL: * The Dedicated Power Zoom Shoe-Mount is an autofocus TTL power zoom lens for digital Nikon SLR cameras * Its auto-zoom flash head senses the focal length of the camera"s lens and adjusts accordingly * There is a built-in slave mode and it can tilt up to 90 degrees and swivel up to 270 degrees for complete lighting control and shadow-free flash photography * Additional features include red-eye reduction, automatic shutter speed setting, front and rear curtain synchronization, and a 24mm-85mm zoom range