Cactus Wireless Flash Transceiver V6II The Cactus V6 II is the World’s First wireless flash trigger that supports cross-brand high-speed sync (HSS) & can control power output & zoom angle of Canon, Fujifilm, Nikon, Olympus, Panasonic & Pentax system flashes all at the same time. Two High-Speed Sync Modes: Normal HSS: Supports shutter speed up to 1/8000s. 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 & IIs now has an automatic LED AF-assist light that makes auto-focusing in dark environments possible – even in pitched-black! 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 & assigning an Auto flash profile. Moreover, it now works with previously unsupported digital-only TTL flash models on the V6 & expands its compatibility. Similarly, the V6 II will auto-detect the camera & selects the system accordingly.4 This simple plug-&-play makes the setting up extremely quick & easy that both amateurs & professionals appreciate. Flash Profile Customization: Users may still manually choose from more than 60 popular flash models from Canon, Nikon, Pentax, Olympus, Panasonic, Metz, Nissin, etc. should they wish to. & for those who demands the utmost accurate power outputs they may adjust each power level using the Cactus Profile Editor, a computer-installed software that allows the saving of up to 10 personalized flash profiles. Remote Power & Zoom Control: Besides remote power control, remote zoom control is now available to all compatible TTL flashes, which was only available on Cactus RF60 series Wireless Flash before. This will give photographers much quicker controls by swapping controls of power & zoom settings directly on the V6 II. Multi-master: The V6 II now allows multiple photographers to trigger off-camera flashes at the same time. Not only is this great for wedding & events, it is also perfect for running photography workshops.