The Chrosziel Matte Box Kit for the Sony FS700 with a 50:85 mm Flexi ring is an ideal choice for mounting a compact setup with the Sony FS700. It mounts onto 15 mm rods. Filters insert from the top and can be rotated laterally thanks to the integrated rotation mechanism. The R20 comes with Chrosziel multi-format filter holders (410-04) 4x4" and 4x5.65" as well as (402-12) 4x4" for the rear filter holder, including a top flag (450-11) for the MB-450 series matte boxes and a front mask, a 15 mm rod support, a protective plate with 110 mm threading, a lightweight support (401-431) for digital SLR cameras and the Nikon D800, and a Flexi insert ring (450-22) 110:50-85 mm. (Always use the front mask for focal lengths of 4.5 mm or more. It effectively improves image quality compared to flags mounted in front of the lens.) (The Chrosziel AC-401-63 lightweight support system is specially designed to accommodate the Chrosziel matte box when using the Sony FS700 camcorder. To add the support, simply install the central support on the matte box, install the lightweight support base on the camera, and insert the standard 15 mm rods directly between the central support and the lightweight support base.)