The Mattebox Clip-on 4x4 is compatible with lenses that have a front side diameter of up to 114mm. The mattebox clips directly onto the lens. This advanced compact mattebox, includes one fully rotatable 4x4” filter frame, one fixed 4x4” filter frame and a French flag. An optional Side flag kit for this mattebox is available. Step-down rings available from 114mm to 110, 105, 98, 95, 87, 85mm and from 105mm to 82, 77 and 72mm.