The Raynox PNF-808 Filter Kit includes a Multi-Layer Coated (MC) Protection filter, a Polarizer filter and a Tube Adapter to mount on to Nikon Coolpix 900 Series Digital Cameras. The MC Protection filter protects the lens from dust, moisture and scratches, which can lead to costly repairs, and also reduces haze in landscape shots. The Polarizer Filter suppresses unwanted light reflections such as on the glass or water and maintains the cameras auto focus function while the filter is attached. Both filters have 37mm front and rear mounts so the filters can be stacked while the included filter cap will protect your filter surface when attached to the camera.