Sony B4 mount to FZ Adapter
The LA-FZB1 lens mount adaptor increases the lens options for the PMW-F5/F55 camcorders shooting 4K productions. The small and lightweight lens mount adaptor converts the lens mount format from B4 to FZ.
It is compatible with most B4 mount lenses and features a 12-pin connector to provide communication between lens and camera.
You can laso purchase this product at PhotoCineShop.