NiSi 49mm Swift True Color CPL Polarizer Filter

The NiSi 49mm Swift True Color Pro Nano CPL is a rotating circular polarizer engineered for photographers who prioritize color accuracy. Where many CPL filters introduce a noticeable warm tone to images, NiSi's True Color technology is designed to preserve a neutral color balance, allowing skies, foliage, and water to appear closer to how the eye perceives them. The filter reduces reflections and glare from non-metallic surfaces — glass, water, and wet foliage — while also deepening sky saturation and improving overall contrast in outdoor scenes.

Built with high-definition optical glass and NiSi's proprietary Pro Nano coating, the filter resists water droplets, dust adhesion, and surface scratches, which helps maintain clean image quality in the field. The filter mounts via the NiSi Swift system, a friction-based press-on mechanism that replaces traditional screw threads and magnetic attachments. This allows quick, secure filter swaps, but it does require a compatible Swift base — either the 49mm Swift Variable ND or a 49mm Swift Adapter — as the filter cannot attach directly to a lens. For photographers already invested in or considering the Swift ecosystem, this CPL adds a valuable tool for controlling reflections while maintaining true-to-life color.