Blackmagic Mini Converter Optical Fiber 12G is a compact converter that extends SDI connections over massive distances by converting SDI to optical fiber and optical fiber to SDI in both directions at the same time. Using the Blackmagic Mini Converter Optical Fiber 12G is an affordable way to increase camera coverage at live events because it lets broadcasters place cameras up to 10 miles away from their switchers, routers, and decks using low cost optical fiber cable.