The SB-300 AF Speed light from Nikon is a lightweight on-camera flash that is compatible with Nikon cameras featuring i-TTL. When used with cameras featuring Nikon's Creative Lighting System you can access advanced controls like rear-curtain sync and fill flash. It features a guide number of 59' at ISO 100 and a coverage of a 27mm lens with FX-format cameras, allowing for total coverage from 27-200mm. It has a distance range of 2-66'. Bounce light off a ceiling or wall with the 120° tilting head, and click into position at 120°, 90°, 75°, 60°. It has a recycle time between 3.5 and 30 seconds.