Tiffen 77VND 77mm Variable Neutral Density Filter for Camera

Provides 2 to 8 stops of light control depending on lens focal distance Thin profile black rotating ring: 9 millimeter. Black aluminum filter ring Wider outer optic to help reduce vignette at wide angles Made with high quality optical glass using Tiffen's color core technology for sharpness Made in the USA The Tiffen Variable ND filter is a unique, versatile and flexible tool, affording you the convenience of using several Neutral Density filters all in one. Primarily used as a photographic tool for controlling depth of field and exposure, the Variable ND is being sought in the video market as well because it is fast, easy to use, small, lightweight, and does not require additional accessories such as a matte box.