Tiffen 138mm Variable Neutral Density

138mm Matte Box Mountable VND (Includes a Rubber Donut & 114mm light prevention threaded rear ring) Up to 6-stops Tiffen VND* (Variable Neutral Density) with index markings (Focal length dependent) with a minimum of 2-stops going up to 8-stops. (ND.6 to ND2.4) The ultra-compact patent-pending design does not impact on the original field of view of a standard rear 138mm filter ring Tiffen 138mm VND fits directly into bar mounted matte boxes manufactured with a 143mm rear filter ring port The Rubber Donut is supplied with a 114mm light prevention ring, which will accept ARRI R2 compatible threaded reduction rings Compatible with matte box manufacturers including ARRI, Bright Tangerine, Movcam, Tilta and Vocas: ARRI MMB-1 MB-14 MB-18 MB-19 MB-20 BRIGHT TANGERINE STRUMMER DNA VIV VIV5 MISFIT MOVCAM MM-1 MM-2 TILTA MB-T04 VOCAS MB455