The Raynox PLP-H30 Filter Kit includes a Multi-Layer Coated (MC) Protection filter, a Linear Polarizer filter and a Tube Adapter to mount on to the Sony DSC-H1 Digital Camera. 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 Linear 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 52mm 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.