The image is for illustrative purposes only. Cameras and other accessories are not included. To install the Half ND4 PRO, a compatible filter holder and adapter ring are required. A square-shaped ND4 filter that allows for convenient adjustment of the ND section boundary. [ND section reduces light by 2 stops]. Reduces blown-out highlights and crushed shadows on the screen, allowing you to achieve the desired effect. Glass / [100X125 Half NDPRO4X] 100X125 Half NDPRO4X A square-shaped ND4 filter that allows for convenient adjustment of the ND section boundary. [ND section reduces light by 2 stops]. Reduces blown-out highlights and crushed shadows on the screen, allowing you to achieve the desired effect. Glass ■ Specifications ■ Filter Shape: Square Size: Width 100 x Height 125mm Made of Glass *The image is for illustrative purposes only. Cameras and other accessories are not included. To install the Half ND4 PRO, a compatible filter holder and adapter ring are required.