Designed to be universal, the DF3600U Flash from Sunpak is fully compatible with both Canon E-TTL / E-TTL II and Nikon i-TTL automatic exposure systems. The flash is quite capable, offering a guide number of 118' at ISO 100 and 180mm as well as a zoom range of 18-180mm, which can be expanded for wide-angle shooting thanks to a built-in diffuser panel. For full bounce capabilities, the DF3600U also features tilting from -7 to 90° and a full 360° of rotation. Taking things up a notch, the flash can be set up as a wireless slave, including full TTL functionality.
For smooth operation, the flash runs on four easily found AA batteries which can provide a recycle time of 0.5-8 seconds. Also, it features a stroboscopic mode for advanced effects and an AF assist light for dark situations. On top of this, it has high-speed sync support at up to 1/8000 second with compatible cameras along with slow, 1st and 2nd curtain sync. And, finally, it incorporates PC sync and HV power ports.