1、Reduce Shutter Speed: The main function is to reduce the amount of coming light, prolong the exposure time, can effectively reduce the shutter speed. 2、Safety Pin Design: With safety pin design, when recording a video, the amount of light can be easily adjusted by holding the safety pin and rotating, so that the hand will not be easily exposed. 3、Reduce Reflectivity: Multi layer anti reflection coating on both sides of the lens can effectively reduce the reflectivity. At the same time can protect the lens, reduce wear. 4、Visual Dimmer Design: Visual dimmer, a total of 5 adjusment, including ND2, ND4, ND8, ND16 and ND32, without cruciform design, this is undoubtedly a better choice for image creation. 5、Diversified Function: With waterproof and anti oil stain function, make the lens easier to use and clean. 6、Manufacturing Material: Frame is made of 6063 aluminum alloy material, lightweight and corrosion resistant, with ultra thin frame design. Item Type: ND2‑32 Lens Filter Material: 6063 Aluminum Alloy + Optical Glass Coating Process: Multi Layer Coating Coating Effect: Waterproof, Anti Oil Stain, Anti Mold Filter Effect: Reduce The Amount Of Incoming Light And Blur The Background 1 x Filter