After two years in the making, Cactus V6 II - the second generation of the World's First cross-brand wireless flash transceiver, NOW supports high-speed synchronisation (HSS)! Besides the revolutionary remote power control of Canon, Fujifilm, Nikon, Olympus, Panasonic and Pentax flashes all at the same time, the new models now support HSS / FP mode in the same cross-brand environment. This unique function gives photographers flexibility undreamed of. Matching flashes with same camera systemfor off-camera flash photography is over. 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 Cactus also extends HSS capabilities to Fujifilm cameras despite them not yet supporting high-speed sync at the time of writing. AF-Assist Both the V6 II and IIs now has an automatic LED AF-assist light that makes auto-focusing in dark environments possible - even in pitched-black!3 Besides the camera-mounted V6 II/IIs, off-camera units will also activate the AF-assist light, which helps focusing even when camera is far from the subject. Highly Intelligent V6 II can now auto-detect the on-camera portable flashes at device start-up by selecting the system the flash belongs to and assigning an Auto flash profile. Moreover, it now works with previously u