The nikon SB-300 AF Speedlight is a lightweight on-camera flash that is
compatible with nikon cameras featuring i-TTL support. The SB-300 has a guide
number of 59' at ISO 100 and a coverage of a 27mm lens with FX-format cameras.
This allows for a total coverage range of of 27-200mm. Additionally, the flash
has a distance range of 2-66'.