K&F CPL Filter for GoPro Hero 9, 10, 11, 12, 13 Nano-X Series | KF01.2336

Remove reflections and boost colour in your GoPro footage

The K&F Circular Polariser Filter for GoPro Hero 9 through 13 brings the most useful optical effect in outdoor photography and videography to action camera shooting. A polariser cuts the reflected glare from water surfaces, making rivers, lakes, and oceans appear clearer rather than bleached white. It also deepens the blue in skies, increases the saturation of greens in vegetation, and improves overall contrast in high-contrast outdoor scenes.

The mechanics of circular polarisation work through a two-layer optical element. The outer layer is a linear polarising film that blocks light waves vibrating in one plane. The inner layer is a quarter-wave retarder that converts the remaining light into circularly polarised light, which is required for accurate metering and autofocus in modern cameras that use beam-splitter mechanisms internally. The result is a filter that cuts reflections and boosts contrast without interfering with the camera's exposure and focus systems.

The filter rotates to let you select the polarisation strength depending on the angle of the light source. The maximum polarisation effect occurs when the light source is at approximately 90 degrees to the camera axis, and the effect diminishes as the angle decreases. For water surface reflections, maximum polarisation typically gives the most dramatic clarity improvement. For sky enhancement, the effect is strongest when the camera is aimed perpendicular to the sun's position. On flat-water kayak runs, coastal cliff shots, mountain lakes, and skate park footage with wet surfaces, a CPL is one of the filters that makes the biggest visible difference to the final images.

The filter is custom-engineered for the GoPro Hero 9 through 13 lens assembly, providing a secure fit that does not loosen during the vibration and G-force typical of action camera mounting conditions. The optical glass meets the same standard as the UV filter in the range, with multi-layer anti-reflective coatings that prevent flare from direct and oblique light sources. The waterproof coating keeps the filter surface clean and water-repellent in wet shooting conditions.

For GoPro users who film near water, in bright outdoor environments, or in conditions where reflections from wet surfaces consistently degrade the image quality, the K&F Circular Polariser is one of the highest-value single filter purchases available for the Hero 9-13 range.

Frequently Asked Questions

Frequently Asked Questions:
Q: Do I need to adjust this filter during filming?
A: Set the polarisation angle before filming relative to the light source for best results.

Q: Does this work inside an underwater housing?
A: No. The filter attaches to the outside of the GoPro and is not designed for underwater housings.

Q: Is this compatible with GoPro Hero 8?
A: No. This filter is designed specifically for Hero 9, 10, 11, 12, and 13.

Technical Specifications:
 - Filter Type: Circular Polariser (CPL)
 - Compatible Models: GoPro Hero 9, 10, 11, 12, 13
 - Package Weight: 50g
 - Coating: Multi-layer anti-reflective, waterproof, scratch-resistant
 - Warranty: 2 Years Limited