The Evo Aluminum P Series Filter Holder holds multiple Cokin P Series 84mm-wide rectangular filters plus a circular filter. It fits up to three 2mm rectangular filters, or two at 2mm along with a circular 95mm screw-on filter, or one 4mm and one 2mm rectangular filter at the same time. A Cokin P Series Filter Holder Adapter Ring is first required to be attached to your lens. Compatible adapter rings are available for lenses with 49 to 62mm front filter threads.
The filter holder's back plate is what allows mounting rectangular filters to a lens with a compatible adapter ring. After being fitted onto an adapter ring, the back plate can be rotated 360°, permitting the use of graduated neutral density and other filters that are enhanced by varied positioning. Also included is a front plate that can be installed in front of the back plate, or in front of up to two of the back plate's filter slots. This front plate enables placing a screw-on 95mm filter at the very top of the filter holder assembly. This ensures that the adjustment ring of a filter such as a screw-on CPL remains accessible.
To help prevent stray light from coming in between the filter holder and a lens, two gaskets are positioned along the front of the back plate. These gaskets are designed to form a seal between the back plate and the first rectangular filter placed in front of it.