Master Flash HSS 1/8000s E-TTL Flashgun Autofocus Auxiliary Flash Speedlite for Canon DSLR Camera

Features: Radio Trigger: Insert a radio module, as a remote dependent unit, can be compatible with the radio trigger system.  The set-top ETTL flash: Install it on the Canons camera to achieve automatic flash photography.  Optical signal master control functions: Automatic wireless remote control flash (optical pulse).  Autofocus auxiliary functions.  Automatic zoom functions, flash zoom position can be back and forth with the change of the focal length of the lens.  Supporting access to the Canon's menu.    Specifications: Guider number: GN60 (ISO100, 200mm);  Wireless Flash: Radio transmission Slave, Optical pulse transmission Master/Salve;  Flash mode: ETTL, M, MULTI;  Zoom range: Auto, 20 ~ 200mm (When using wide-angle dispersion plate is 14mm);  High-speed sync: 1/8000s;  Master flash: Master optical pulse signal transmission;  Slave flash: Optical pulse SLAVE Canons, light trigger, S1/S2, wireless SLAVE (NEED to upgrade the software first);  Shutter Synchronization: High-Speed Sy