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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.
Wireless TTL and optical slave flash modes with ranges up to 98' indoors and 49' outdoors
Flash offers four wireless channels and three groups
Manual flash control from 1/1 to 1/128 in 1/3 EV steps