NiSi 800394 True Color CPL 4x5.65" Rotating Polarizing Filter

The NiSi 800394 True Color CPL is designed for the working cinematographer who needs polarization control without compromising color accuracy. On exterior shoots — water reflections, sky contrast, storefront glass, vehicle windows — a CPL is often essential, but the warm color shift introduced by conventional polarizers creates grading work downstream. The True Color formulation targets that problem directly, aiming to give the camera a neutral polarized image that doesn't push the colorist toward unnecessary correction. This is a tool built for narrative film, commercial production, and high-end documentary work where the grade starts from an intentional, clean capture.

The filter's 4x5.65" form factor and 6mm thickness fit directly into professional cinema matte box workflows. The M0.8 focus gear ring elevates it beyond a static optical element — paired with a small cine motor, you can adjust polarization angle continuously during a shot, something useful in scenes with moving reflective surfaces or shifting sun angles. The included 15mm support rod addresses the weight and balance demands of a large glass element in a matte box, and the padded pouch offers adequate day-bag protection. Build quality is consistent with NiSi's cinema filter line — precise rotation, neutral glass, and a form factor that integrates cleanly into a professional rig.