Designed with filmmakers in mind, this 4 x 5.65" Black Satin Diffusion Filter from Tiffen features a low density of 1/8 for an understated effect. It is designed to subtly soften the image and lower detail resolution, being often sought after by videographers who want to simulate the look of film footage while shooting on digital gear. The filter is made of water white glass and can be mounted on compatible square filter holders.