BestDealUSA Digital Matte Box 15 mm Rail Rod Support M1 for DSLR Camera D90 60D 5D T3i T4i

Pretty easy to use. Specification: Fit Rail Diameter: 15mm Fits Rails Center to Center Distance: 60mm/2.36'' Fits Lens Sizes: From 43mm to 77mm only. Top flag dimensions: Approx. 110X235mm/4.33X9.25'' Side flag dimensions: Approx.140X90mm/5.51X3.54'' Package Weight:Approx.11.6oz Suitable for: Almost All the General DSLR and Lens Almost All the General Camcorder and Lens Descriptions: In still photography and video, the matte box is a device used on the end of a lens to block the sun or other light source in order to prevent glare and lens flare. It performs essentially the same function as a lens hood and also mounts in front of the lens, it includes adjustable fins or flank flags. Another purpose of the matte box is to hold glass or plastic filters in place in front of the lens. The matte boxes are also made for Camcorder cameras and HD cameras for the same reasons as for film cameras. This matte box is supported by two rods that run the length of the camera. 1x Matte Box (M1)