Aputure V-Control @ AED 750 ($205.20) It is a handheld USB host device designed to control certain Canon DSLR cameras that use Canon USB protocol. Switch between still and video modes with ease. Seven versatile buttons & a center control give you full control over exposure, live-view, and focus settings. It will revolutionize the way you shoot stills and videos. 1- Worlds 1st mode-switching USB focus device. 2- Total exposure control (shutter, aperture, ISO, EC). 3- Total live-view control. 4- Compatible with many accessories. 5- LCD display for adjustment settings. 6- Multiple focus options in still mode. 7- Four focus point presets in video mode. 8- Two USB ports for ergonomic flexibility.