Don't adapt your Canon EF lenses for use on your Cion camera, replace the camera's mount instead with the Canon EF to AJA CION Replacement Lens Mount from MTF. Services Ltd. Take advantage of the CION's replaceable mount design and convert your Cion camera from a PL Mount to a Canon EF mount using just four screws.
The body of the adapter is made from aluminum for its balance between strength and weight, and it is anodized for scratch and corrosion resistance. The nickel-plated brass mounting surface mates with your Canon EF lenses. The replacement mount is mechanical only and does not contain any optics or electronics, which means you will need to use manual focus/iris lenses.