:The Metz mecablitz 64 AF-1 digital Flash is a powerful unit with a guide number of 210' at ISO 100 and 200mm that works with Olympus/Panasonic. This model is equipped with a metal shoe for durability. The unit features an automatic zoom with a range between 24-200mm and comes with a built-in wide-angle diffuser that extends its reach to 12mm. The 64 AF-1 also has a secondary light reflector with two output levels for achieving even lighting as well as wireless functionality as either a master or slave unit with ratio control options.