The Canon E-52 II Lens Cap for 52mm EF-M Lens is a protective cap that fits on the front end of a 52mm EF-M lens from Canon. The EF-M lenses are compatible with the EOS-M mirrorless digital camera. The cap prevents dust and dirt buildup when the lens is not in use, and also safeguards it against scratches, bumps and other light impact. | Canon | | E-52 II Lens Cap | Clear | Best Buy