The Chrosziel 412-02F130 matte box is a lightweight 16:9/4:3 clip-on matte box designed to work with 2/3" lenses with a minimum focal length of 4.3 mm. The matte box reduces reflections, helping to eliminate flare. This matte box includes a top French flag. In addition, the kit includes two filter stages (one fixed, one rotating) with trays accommodating square filters. The front filter stage can accommodate 4 x 5.65" and 4 x 4" filters, and the rear rotating stage can accommodate 5 x 5" and 4 x 5.65" filters. Note! Reducing rings are required — use the 411 series for the 130 mm rear mount.