Redrock Micro LiveLens, Active Lens Mount for Canon EF Lenses

The Redrock Micro LiveLens active lens mount for Canon EF lenses is the first lens mount for 35mm adapters that let's you control the aperture of Canon EF lenses. By simply attaching your Canon EF lens and pushing the open/close buttons, you can set the EF lens' aperture to any stop in increments of 1/2 stop.