The ring adapter and filter holder is attaches to lens to hold both square and round filters, as well as optional modular accessories such as the Cokin Modular Hood & Coupling Ring.
55mm cokin p Ring Adapter Filter-holder which can be precisely adjusted, coupled to the lens by means of a screw-in adaptor ring. The filter-holder has four grooves. One takes round filters,which can be rotated in the groove. The three others take squarefilters which can be adjusted up or down at will.
El soporte y el anillo encajan bien. La rosca del anillo enrosca bien en el filtro de la lente. Sería mejor que vendieran sólo los anillos de diferentes diámetros; no necesito un nuevo soporte de plástico cada vez que compro uno.
Adapter ring and filter holder ok. I have three different rings, but I don't need three filter holders. It would be nice, and cheaper, to buy only the rings.