Polaroid White Balance Lens Cap For The Sony Alpha NEX-C3, NEX-7, NEX-6, NEX-5N, NEX-5R, NEX-5, NEX-3, NEX-3N, NEX-F3, NEX-5T, A3000, A5000, A6000, A7, A7R Digital SLR Cameras Which Have The Sony E Series (18-200mm) Lens Helps Eliminate Undesirable Color Casts Provides Accurate White Balance Measurement Works with Any Digital Camera that has Manual White Balance Feature