Metz has just released a must-have product for macro photographers. The new 15 MS-1 Digital Macro works directly off the IR transmission of an on-camera flash. Because it works off the IR, this one flash unit works on eight different brands of cameras. Although designed for macro work, the Metz 15 MS-1 also has enough power for ring-lighting portraits. For more information see our product page on the Metz 15 MS-1.