Sigma ef 610 dg st na ittl flashgun nikon afd fit
Autozoom function bounce flash function with movable flash head built in catch light panel af auxiliary light mechanism manual flash power level control auto power off function the ef 610 dg st is multifunctional shoe mount type flash featuring a powerful guide number of 61 and designed to work with the most popular digital slr cameras this flash unit provides fully automatic flash photography for digital slrs with automatic ttl exposure control it combines a