The Chrosziel AC-411-50 clamp-on 4x4 lens shade is a filter holder/mattebox designed for broadcast lenses with internal focus. This device works with 4:3 image formats and also comes with a 16:9 mask. Designed for focal lengths from 5.2 mm, it can also be used with wider lenses via a special reduction ring, allowing focal lengths down to 4.5 mm. This kit works as a mattebox, allowing the user to achieve better image control — ideal for videographers shooting in a cinematic style and event camera operators wishing to enhance their image quality. Wide profile This device has a wide profile to work with wide-angle lenses and 16:9 image formats. Adaptable With the addition of adapters and lighting supports, this device adapts to a wide variety of video cameras and lenses. Filter holder This device comes with two filter holders for excellent control and filter stacking; one of the filters is fixed and the other rotates for use with circular polarisers and graduated filters. French flag A French flag is supplied as standard for additional control of reflections and stray light.