Nissin Di622 dedicated flash gun for Nikon film and DSLRs with zoom head and iTTL exposure dedication. The flash can be moved 90° upward, 90° to the left and 180° to the right. Powered by 4x AA battery offering a recyle time of 3.5sec. The flash has a guide number of 44 (ISO100/m) exposure compensation -1.5 to +1 in increments of 1/2 EV Steps. Flash duration: 1/800th (Full power) 1/800th sec - 1/30,000th sec TTL mode. AF assist and a built in wide panel. The zoom head covers 24-105mm. Red eye reduction.