The LEE Filters Seven5 Filter Holder is a precision-engineered filter holder designed specifically for the Seven5 75 x 90mm filter series. The compact size of the holder and filters is especially suited for compact interchangeable lens cameras, such as mirrorless cameras, and supports the use of two rectangular filters at a time. A dedicated circular polarizer is also available and can be used in combination with other rectangular filters simultaneously. This holder requires the use of a Seven5 adapter ring to attach to lenses with filter ring diameters between 37-72mm.