The Vivitar DF-283 Shoe Mount Flash is an auxiliary flash with full TTL support for Pentax digital SLR cameras. The flash's built-in slave function allows it to operate when disconnected from the camera for greater flexibility. With the bounce, zoom, and swivel head, photographers have more creative license over their shots. The Vivitar DF-283 has a four position zoom setting covering focal lengths of 24 mm, 35 mm, 50 mm, and 85 mm. The flash head can be set to bounce at 0, 45, 60, 75, and 90 degrees and this shoe mount flash also has a horizontal swivel of 270 degrees for softer lighting. With the red focus beam, the Vivitar DF-283 Shoe Mount Flash helps the photographer focus the shot in low light. The Vivitar DF-283 preserves battery life with an auto-off element, and a red-eye reduction feature helps prevent flash reflection. This shoe mount flash includes a reflecting plate and wide-angle diffuser for additional shooting capabilities. A flash readiness indicator lets the photographer know when the flash is charged. The Vivitar DF-283 Shoe Mount Flash also has front- and rear-curtain synchronization. With the wide range of options on this device, photographers can shoot in a variety of settings.