Metabones Canon EF to E-mount CINE eND Smart Adapter (Black Matt)

The Metabones EF to E mount CINE eND Smart Adapter is built-in with the swapping eND filter system, allowing users to change between the clear-glass filter and the eND filter in one click within a second.
The internal system prevents the adapter and camera from the dust.
The Smart Adapter provides an electronically variable ND.
The eND module has a minimum setting of 2 stops and can provide up to 7 stops of exposure adjustment in 1/3 of a stop increments without degrading your image.
It provides you with exposure control without requiring you to add ND glass to the front of the lens.