Viltrox EF-E II Speed Booster (Focal Reducer)

With the Viltrox EF-E II Speed Booster (Focal Reducer) you can use Canon EF lenses on a camera with a Sony E mount. Thanks to the built-in optical lens with four elements in four groups, the aperture can be increased by one f/stop and the focal length extended. This way you can capture more light for your recordings and choose the depth of field that your preference is. This EF-NEX IV Lens Mount Adapter is made of high quality aluminum alloy with a chrome layer on both sides for smooth and durable mounting. In addition, it features a USB port to perform firmware updates and a switch to choose between CDAF (contrast detection auto focus) and phase detection auto focus (PDAF) mode.