Freewell Magnetic Quick Exchange System 67mm Net Density ND16 (4 f Stops) Camera Filter

Very important: inside the black envelope, you get a QR code installation instruction card please see the video before you start using the product. INSTALLATION - Now change your filter in 2-3 seconds with the Freewell Quick Swap magnetic threadless system. Optical Glass: Made of high definition optical glass double sided multilayer zero chromatic aberration (color change). Function: ND16 neutral density filter (4 f-stops) helps control the depth of field during normal sunny days. Includes: Empty Magnetic Base Ring, ND Filter, Lens Cap, Microfiber Cleaning Cloth, Storage Locker.