Adjustable CPL Filter for Action 5 Pro

The essentials

If you film sports or outdoor action, a circular polarising filter can make a noticeable difference to how your footage looks. The NEEWER adjustable CPL filter for DJI Osmo Action 5 Pro and Action 4 helps cut glare from water, glass and other nonmetallic surfaces, while also boosting colour saturation and contrast for a more punchy, clearer result. 🌊

This is the kind of action camera accessory that earns its place on days when conditions are bright, reflections are constant, or you are moving between environments such as lakes, city streets and mountains. You get an adjustable polariser that you can fine tune by rotating the outer frame to the marked positions, which helps you dial in the effect without stopping the shoot. For content creators capturing fast scenes, that practical control matters.

Because it is designed with HD optical glass and multiple protective coatings, it is built to handle everyday handling and filming conditions, including exposure to dust and everyday marks during shoots. You also benefit from a slim, lightweight frame designed to avoid unwanted vignetting and reduce the chances of lens flare when light is challenging. 📷

The filter is screw on, so once you remove the original lens, fitting and swapping is quick. There is one important limitation to keep in mind: the filter is not weather sealed and it is not for underwater use, since water entering the filter can degrade image quality.

Key features

The adjustable circular polarising effect is the headline feature here. By rotating the outer frame to the exact marks, you can set the level of polarisation to match the scene and lighting. That makes it useful when reflections change as you move, such as when you are kayaking, surfing or skiing across bright, reflective surfaces.

The filter is described as using multicoated HD optical glass. In practical terms, HD optical glass is intended to help keep images sharp and reduce issues such as chromatic aberration or optical distortion. The coating stack on both sides is also intended to resist water, oil, dust and scratches, which supports durability and easier cleaning after busy filming days. 🧽

For on camera setups, the slim frame matters. The frame uses a premium aluminium alloy build with a matte finish, aimed at maintaining durability in challenging conditions while keeping the overall profile minimal. A low profile helps avoid unwanted vignette and can help reduce lens flare, which is often a concern with action camera lenses and wide angles.

It is also designed for convenience. The filter mounting uses a straightforward screw on method, so you remove the original lens first and then screw the filter in place for a secure setup. You may still want to handle it with care during fast transitions, especially when you are switching between locations.

Worth noting, since this is an important buying consideration, the filter is not weather sealed and should not be used underwater. If your plan includes wet environments where the filter could be exposed to water ingress, you will need to protect your kit accordingly to help maintain image quality.

Tech specs

• Name: NEEWER Adjustable CPL Filter
• Type: Screw on circular polarising lens filter
• Compatible model: DJI Osmo Action 5 Pro and Action 4
• Material: Aluminium alloy frame
• Glass: HD optical glass
• Coatings: Multiple protective coatings on both sides
• Frame profile: Ultra slim and lightweight frame

Who it’s for

It’s a good fit if you shoot action sports and outdoor content and you want a simple way to control glare and reflections without changing your whole setup. It suits you if your footage often includes water, glass, or other nonmetallic reflective surfaces where saturation and contrast can look washed out in bright light.

You may want to skip it if you need an underwater solution or if you require a weather sealed filter for harsh exposure. It might not be a great match if you prefer a no adjustments approach, because this filter is designed to be fine tuned by rotating the outer frame to the marked positions. For most everyday creator workflows on land and in changeable daylight, it can be a practical, screw on upgrade to your action camera accessories.