The Vivitar DF-283 Series 1 TTL Flash is a fully automatic, system-dedicated shoe mount flash, featuring full Sony/Minolta ADI / P-TTL flash support for digital cameras. Although it is an economical and simple to use flash, it still provides some extra features like bounce & swivel, and a manual zoom head and outputs a substantial amount of light. This model features the older Sony/Minolta style Auto-lock Accessory Shoe and is not compatible with the newer Multi Interface Terminal.