The Cactus V6 IIs is a wireless flash trigger dedicated for Sony camera and flash which supports HSS, and can remote control power output and zoom angle of Sony system flashes. It can also trigger the Cactus V6 II, which makes the V6 IIs the World's First Sony-supported wireless flash trigger that supports cross-brand high-speed sync (HSS) and control power output and zoom angle of Canon, Fujifilm, Nikon, Olympus, Panasonic and Pentax system flashes all at the same time. Two High-Speed Sync Modes 1 - Normal HSS: Supports shutter speed up to 1/8000s. 2 - Power Sync: Boosts flash contribution above camera's x-sync speed, perfect for extreme conditions where Normal HSS is not powerful enough. AF-Assist The Cactus V6 IIs has an automatic LED AF-assist light that makes auto-focusing in dark environments possible - even in pitched-black! Besides the camera-mounted V6 IIs, off-camera units will also activate the AF-assist light, which helps focusing even when camera is far from the subject. Dedicated For Sony Devices V6 IIs is specially designed for Sony camera and flashes with the MI (Multi-Interface) hot shoe. Older models with the Minolta/Sony iISO shoe are also supported with a hot shoe adapter. So it will be a simple plug-and-play for Sony users and makes the setting up extremely quick and easy that both amateurs and professionals appreciate. Flash Profile Customization Users may ma