Polarizing filters for square filter systems reduce reflections on water and glass and make skies more saturated. This category includes Cokin C-PL filters for M, L, EVO and NX 100 mm holders, the H&Y K-series 95 mm drop-in CPL filter, NiSi polarizers for the V7 holder, and NiSi Cine filters for matte boxes.

Choose a polarizer to match your holder system: Cokin M or L, the NX series, the EVO L holder or NiSi V7. For video work there are NiSi Cine polarizers in 4x5.65" and 6x6" formats, including rotating CPL models that can be turned without removing the filter.