Features:Multi-coated optical elements, 11X magnification, high definition and durable.Telescopic design, the view finder can be pulled out for different uses.Eyecup has a lock ring, you can click it to stop for aspect ratio ring.Suitable for most film and TV formats, all standard aspect ratios including 16:9.37mm standard filter thread, allows for the addition of a 37mm wide angle converter.Specification:Materials: Aluminum + Multi-coated Optical GlassColor: BlackFormats: 1"(S16), 2/3", 1/2" & 1/3" TV; Anamorphic, 35 & S16 FilmAspect ratios: 4:3 / 1.33 (TV, ~ Academy 35mm & ~ 16mm film), 1.66 (Super 16), 16:9 / 1.78 (HD), 1.85 (Widescreen 35), 2.2 (65mm film), 2.4 (Anamorphic), 2.55 (Dinemascope)Rear Eyepiece: AdjustableFilter Thread: 37mm P=0.75Length: Approx. 2.56"/65mm Diameter: Approx. 1.62"/ 42mmWeight: Approx. 143gPackage Includes:1 x VD-11X Director's Viewfinder1 x Eye Cap 1 x Neck Strap1 x Pouch.