K&F Concept 72mm Neutral Density ND Filter Set ND2 ND4 ND8 Lens Filters Kit + Microfiber Lens Cleaning Cloth + Filter Bag Pouch Includes: K&F Concept 72MM Neutral Density Professional Photography Filter Set (ND2, ND4, ND8) + MagicFiber Microfiber Lens Cleaning Cloth+3 Slot Filter Pouch ND filters (Neutral Density) reduce the amount of light reaching the film without affecting the color. Can be used to enable slower shutter speeds. Also can be used to better separate subjects from the background by allowing wider apertures, effectively decreasing depth of field. Great for portraiture and outdoor scenes. Made of import optics resin,top level of transmittance. Metal sealing ring instead of the plastic sealing ring, better tightness, avoids fall or loose.Extinction paint seiko manufacturing,To achieve the testing sights on military standard Ideal for Wide Angle Lenses. Double threaded metal frame for additional filters or Hood. Compatible with Sony Alpha(A99, A77, A58, A57, A65, A55, A 390, A100, A33, A900, A850, A700, A500 A330, A300 A230, A200) DSLR cameras with 18-55mm, 75-300mm f/4.5-5.6, 50mm f/1.4 lenses.