Viltrox EF-EII is an active adapter dedicated to cooperation with Canon EF and EF-s lenses and is used for mounting them on medium-format mirrorless cameras with Fuji GFX bayonet.
Due to the fact that the adapter has contacts, it supports communication between the lens and the camera enabling reliable autofocus, lens iris control from the camera level and EXIF data transfer. A micro-USB connector is used to update the adapter software yourself.
The adapter is made of aluminum and stainless steel, and its interior is blackened and prevents great reflections.