1、Multi-coated optical elements, 11X magnification, high definition and durable 2、Telescopic design, the view finder can be pulled out for different uses 3、Eyecup has a lock ring, you can click it to stop for aspect ratio ring 4、Suitable for most film and TV formats, all standard aspect ratios including 16:9 5、37mm standard filter thread, allows for the addition of a 37mm wide angle converter 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 Glass Color: Black Formats: 1"(S16), 2/3", 1/2" & 1/3" TV; Anamorphic, 35 & S16 Film Aspect 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: Adjustable Filter Thread: 37mm P= 0.75 Length: Approx. 2.56"/65mm  Diameter: Approx. 1.62"/ 42mm Weight: Approx. 143g Package Includes: 1 x VD-11X Director's Viewfinder 1 x Eye Cap  1 x Neck Strap 1 x Pouch