Lens cap：A lens cover or lens cap provides protection from scratches and minor collisions for camera and camcorder lenses. Lens covers e standard with most cameras and lenses. Some mobile camera phones include lens covers, such as the Sony Ericsson W800 and the Sony Ericsson K550. A more secure lens cap is the metal screw-in lens cap which cannot pop off a lens accidentally. Although a screw-in cap takes more time to remove in order to take a photograph than a standard lens cap, it is stronger than plastic and therefore more protective.VY Optics is a professional manufacturer of photographic accessories,size of lens cap shown on picture is 37mm,other dimension is also available.The lens caps are fit for Canon,Nikon,Olympus,JVC,Kadak,Fuji,Casio and so on.Beside,we supply OEM service.