Features: * Variable ND FilterK&F CONCEPT ND2-400 Filter reduce the light from 1 to 9 f-stops. * MaterialMade by Completed Professional Optical Glasses, with double-side multilayer blue coating to help repel water. * Exposure ReductionND filters are good for rivers, waterfalls, and other bodies of water, especially under bright light. The longer exposure times allows for smoother water movements, shallower depth of field, and blurred motion. * Ultra-SlimThe filter frame is only 7.3mm, and super lightweight CNC ring used in construction prevents adverse effect * NoteThis Filter kit is compatible with all 37-82mm 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. Fractional transmittance Note: The silver box is the latest packaging of our products, the products are the same, don't worry, thank you~ Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store