Freewell Filter Set for O4 Air Unit Pro

Freewell filter set for DJI O4 Air Unit Pro is a dedicated ND filter system designed for FPV drone pilots who need precise exposure control in varying lighting conditions. The kit includes four neutral density filters—ND8, ND16, ND32, and ND64—each providing a different level of light reduction to match changing brightness levels during flight.

By limiting the amount of light reaching the sensor, the filters help prevent overexposure in bright sunlight while maintaining balanced image exposure. This allows for more consistent footage with improved highlight retention and more controlled dynamic range. The reduced light also enables the use of slower shutter speeds, which introduces natural motion blur and results in smoother, more cinematic FPV footage.

Each filter is made from premium optical glass designed to ensure high clarity and accurate color reproduction. Freewell’s True Color technology helps maintain natural color balance while minimizing unwanted color shifts, even in challenging lighting environments. The result is sharper detail and more realistic footage directly from the camera.

The filters are engineered specifically for the DJI O4 Air Unit Pro, ensuring a precise fit and secure installation without interfering with aerodynamics or camera operation. The ultra-lightweight construction is critical for FPV applications, where weight balance and flight performance are essential. Protective coatings help resist dust, scratches, and fingerprints, improving durability during intensive outdoor use.

The set includes ND8, ND16, ND32, and ND64 filters, a protective case, and a cleaning cloth.