The E-Image MK07 4×4 Rod-Mounted Swing-Away Matte Box is a 4 x 4 matte box that fits lenses with a maximum front outer diameter of 85mm. It features a carbon fiber and aluminum construction that makes it lightweight. It features a rear rotating 4 x 4 filter stage and mounts onto lightweight 15mm rods. The matte box incorporates a swing-away design for rapid lens changes. The included 4 x 4 filter trays can slide in the stages, allowing you to adjust their height. The included removable top and side flags can be precisely set to block stray light from flaring your lens. The included anti-reflection rings protect your image by blocking stray light behind the camera bouncing off of filters in the matte box and flaring your image. In addition, the interior of the matte box is finished with a black anti-reflective coating to reduce reflection off the matte box back onto filters.