BlueTech 40.5MM CPL Circular Polarizer Lens Filter For Nikon 1 AW1, J1, J2, J3, J4, J5, S1, S2, V1, V2, V3 Mirrorless Digital Camera System with 10mm, 18.5mm, 30-110mm Lens NOTE: This Filter is compatible with all 40.5mm lenses. Please Check your camera's lens thread size before ordering. THE CPL filters (Circular Polarizer) are great for removing unwanted reflections from non-metallic surfaces such as glass or water. Take richer scenic shots and notice improved clarity in distant objects by cutting through haze and increasing color saturation.