The Vivitar Series 1 DF-383 Power Zoom AF Flash is a fully automatic, system-dedicated shoe mount flash. It features full TTL support for Olympus and Panasonic digital SLR cameras. The bounce, zoom, and swivel head will give you more creative opportunities with your shots. The six position power zoom covers focal lengths of 24mm, 28mm, 35mm, 50mm, 70mm, and 85mm. It can be set to bounce at 0°, 45°, 60°, 75°, and 90°, and has a horizontal swivel of 270° to allow for softer lighting. The power level of the flash output can be set manually from full-power down to 1/16th.