Zeikos 46mm UV Protection Multi-Coated UV Filter For Olympus 25mm, 12mm f/2.0, 17mm f1.8, 60mm f/2.8, Panasonic LUMIX G 14mm f/2.5 & Lumix G X Vario PZ 45-175mm Reduces ultraviolet light; helps eliminate bluish cast in images Pictures gain brilliance Ideal for photography in high altitudes, by the sea and in regions with very clean air Essential filter for every outdoor photographer. NOTICE: This set is compatible with all 46mm lenses, please verify your camera's lens thread size before ordering. Your camera's lens thread size will be marked somewhere on the lens barrel or printed underneath your lens cap. This number is always preceded by a "" (diameter) symbol.For example: 46 = 46mm lens thread size.