NiSi Polarizer 4x4 Ikan Polarizing Filter

The NiSi 4x4 Polarizing Filter is designed specifically for digital cinema workflows where image quality cannot be compromised. Built with high-quality AGC (Asahi Glass Co.) optical glass and Nitto polarizing film — both established names in optical manufacturing — this filter reduces unwanted reflections and glare from non-metallic surfaces such as water, glass, and foliage. The result is richer color saturation, improved contrast, and cleaner footage that requires less correction in post-production.

Precision cutting and polishing ensure that the 4x4-inch filter maintains extreme flatness and parallelism, which is critical for avoiding optical distortion when shooting with high-resolution cinema cameras. The square format slots into standard 4x4 matte box trays, making it compatible with widely used cinema rigs from manufacturers like Tilta, Bright Tangerine, and Wooden Camera. As with any polarizer, shooters should account for the 1-2 stop light loss and be mindful of the polarization angle relative to the light source, adjusting the filter's rotation within the tray to achieve the desired effect on each shot.