The Vivitar DF-283 Shoe Mount Flash is an economical full-TTL enabled flash for digital SLR cameras. Featuring a flash reflecting plate this fully automatic, system-dedicated TTL auto flash creates beautiful lighting that greatly enhances your images. With the zoom, bounce, and swivel head, the shoe mount flash gives you immense creative opportunities for your photo shoots. You can cover focal length of 24mm, 35mm, 50mm, and 85mm with the four-position zoom and allow for dimmer lighting with a horizontal swivel of 270 degrees. The Vivitar flash for Canon features a built-in slave function that enables it to be positioned off-camera, and triggers it by any second flash. You can attain focus in reduced light settings with a red focus beam, and increase your battery life with an auto-off incorporated power-saving circuitry. Red-eye reduction prevents the shoe mount flash from reflecting light off your target's eyes.