Insten Lens Cap + Hood + UV Filter Compatible with 52mm Nikon D3100 18-55mm This Camera Lens Cap is great for protecting your digital camera/camcorder lens Protects the front portions of your lens from water, dust, and scratches Ultra Violet Lens Filter absorbs the ultraviolet rays which often makes photographs hazy and indistinct Absorption of ultraviolet rays without an increase in exposure provides a clearer image