Features 1、High Quality Material: The lens adapter is made of high quality copper material, it is strong, durable, wear resistant and has a long service life. 2、Manual Control: This lens adapter ring for EF mount supports fully manual control and manual focus. At the same time the adapter supports infinite focus. 3、Good Performance: Lens mount adapter support AV/M mode, with lens lock and release and stop screw, bring you a lot of fantasy experience. 4、Application: The lens adapter support for Pentacon PB lens, suitable for EOS EF mount SLR camera body. Applicable cameras for 5D 6D 7D 70D 650D 700D, etc. 5、Easy to Install: The lens adapter owns a fine finishing. And you can install, remove and operate the lens smoothly. It is also has light weight and small size, easy to carry. Specification Item Type: Lens Adapter Ring Gross Weight: 30g / 1.1oz Material: Copper Item Model: PB-EOS Applicable Lenses: For Pentacon PB mount lenses. Applicable Cameras: For EF mount digital SLR cameras, such as: for 5D, for 6D, for 7D, for 70D, for 650D, for 700D, etc. Package List 1 x Lens Adapter Ring