REVIEW: K&F Concept 4-Pack Filters for Osmo Action 5 Pro & Action 4

Spending time outdoors capturing adventures with an action camera is fantastic, until challenging light conditions make the footage look less than ideal. I remember struggling with blown-out highlights on bright sunny days or flat, washed-out colours. It was frustrating knowing the camera was capable of so much more, but without the right tools, those perfect moments were being compromised. Addressing these light issues was crucial; otherwise, countless hours of filming dynamic scenes would result in mediocre videos, losing the impact and vibrance of the actual experience. Having a set of high-quality camera lens filters would have made a world of difference right from the start.

If you’re diving into the world of action camera videography, you quickly realize that the built-in lens, while great, isn’t always enough to handle every lighting scenario nature throws at you. This is precisely why one would seek to buy camera lens filters. They help you control the amount of light hitting the sensor and manage reflections, essential for getting professional-looking footage. The ideal customer for action camera filters is someone who regularly shoots outdoors, whether it’s for sports, travel, vlogging, or general adventure recording, and wants to have greater control over image quality beyond what automatic camera settings can provide. If you primarily shoot indoors or in consistent, controlled lighting, or if you’re happy with quick point-and-shoot results without fussing over settings, then specialized filters might not be necessary for you, and you might be better off focusing on camera technique or editing software instead. Before making a purchase, you’ll want to think about the specific types of filters you need (ND for light reduction, CPL for glare), the compatibility with your exact camera model, the quality of the glass and coatings, how easy they are to attach and remove, and their durability, especially considering the rugged environments action cameras are used in.

K&F Concept 4-Pack CPL, ND8, ND16, ND32 Filters for Osmo Action 5 Pro & Action 4, Optical Glass with...
  • 【Osmo Action 4/ 5 PRO Accessories】K&F Concept CPL + ND8 + ND16 + ND32 Lens Fitler Kit designed exactly compatible with DJI Osmo Action 5 PRO / Action 4 cameras.
  • 【Filter function】ND filter reduces the shutter speed in bright conditions and the amount of light entering the camera sensor. CPL prevents unwanted glare from non-metallic reflective surfaces when...
  • 【Precise mounting】 Screw on bayonet design, ultra-thin bezel, just rotate and screw in, the filter fits perfectly with the body lens base, fits perfectly with the camera lens base, easy to...

Introducing the K&F Concept Filter Set

The K&F Concept 4-Pack CPL, ND8, ND16, ND32 Filters for Osmo Action 5 Pro & Action 4 is a dedicated kit designed specifically for these popular action cameras. It promises to give users greater control over exposure and reflections, allowing for more cinematic and vibrant footage in various outdoor lighting conditions. The package includes four essential filters: a CPL (Circular Polarizer), an ND8 (3-stop Neutral Density), an ND16 (4-stop Neutral Density), and an ND32 (5-stop Neutral Density). These are built with optical glass and feature multi-layer coatings. Compared to simply using the camera without filters, this set offers significant creative control. While many action camera filter kits exist, K&F Concept is known for providing quality optics at competitive prices. This specific set is tailored for users of the DJI Osmo Action 4 and the newer Osmo Action 5 Pro who want to elevate their video and photo quality by managing challenging light and glare. It’s likely not for someone who needs filters for a different action camera brand or model, or someone who requires variable ND filters or different filter types like mist or star effects.

Here are some pros and cons based on the product information and user experiences:

Pros:
* Specifically designed for DJI Osmo Action 4/5 Pro, ensuring a perfect fit.
* Includes essential filters (CPL, ND8, ND16, ND32) for common outdoor scenarios.
* Made with imported AGC optical glass for good image quality.
* Features 28 multi-layer coatings for reduced glare, flares, and durability.
* Screw-on design is secure once attached.

Cons:
* Screw-on filters can sometimes be fiddly to attach/remove, especially with cold or wet fingers.
* The rotatable CPL design, while convenient, might slightly compromise the camera’s inherent water resistance seal compared to the original screw-in lens protector.
* The included case for a single filter might be bulky if you plan to carry multiple filters not in the original kit packaging.

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NEEWER 52mm Lens Filter Kit: UV, CPL, FLD, ND2, ND4, ND8, Lens Hood and Lens Cap Compatible with...
  • 【Complete Camera Lens Filter Kit】This lens filter set includes all the filter accessories you need for filming outdoors: ND2 ND4 ND8 neutral density filter, CPL, UV and FLD filter, collapsible...
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  • 【58mm Lens Filter Accessories】This NEEWER lens filter accessory kit offers 9 pieces for your choice: UV/CPL/FLD filter, ND2/ND4/ND8 filter, tulip lens hood, collapsible rubber lens hood, snap on...
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A Deep Dive into Capabilities

Having used these K&F Concept filters for quite some time, I can confidently say they’ve become indispensable for my Osmo Action 4. The kit includes four crucial filters, each serving a distinct purpose in managing light and reflections to capture better footage.

Let’s start with the ND filters: the ND8, ND16, and ND32. In essence, these are like sunglasses for your camera. They reduce the amount of light hitting the sensor by a specific factor (8x, 16x, and 32x, respectively), which corresponds to reducing light by 3, 4, and 5 stops. Why is this important? When shooting video, especially in bright daylight, you typically want to maintain a shutter speed that is roughly double your frame rate for smooth motion blur (the 180-degree rule). For example, shooting at 30fps, you’d aim for a shutter speed around 1/60s. However, in bright sun, your camera’s auto mode will drastically increase the shutter speed to prevent overexposure, often resulting in motion that looks choppy or unnaturally sharp. Using an ND filter forces the camera to use a slower shutter speed, allowing you to achieve that desirable cinematic motion blur.

The ND8 filter is useful for moderately bright conditions, perhaps overcast but still bright, or sunny conditions later in the day. Stepping up, the ND16 is ideal for brighter sunny days, providing a significant reduction in light to keep your shutter speed in check. The ND32 filter is for the brightest conditions imaginable – harsh midday sun on reflective surfaces like snow or water. I’ve found this one particularly helpful when touring on the motorcycle under clear skies where the sun is directly overhead, preventing the sky and ground from being completely blown out. Using these ND filters allows me to shoot at frame rates like 24fps or 30fps while maintaining a shutter speed of around 1/50s or 1/60s, giving my motorcycle ride videos a much more professional, fluid look. The effect on colours is also noticeable; instead of looking washed out by excessive light, colours appear more saturated and vibrant, closer to how the scene looked in reality.

Next up is the CPL filter, or Circular Polarizer. This filter is magic when dealing with reflections and boosting contrast. Non-metallic surfaces like water, glass, wet roads, and even foliage reflect polarized light. A CPL filter blocks this light. For me, this means I can shoot near water without distracting glare off the surface, or capture scenes through a window without reflections obscuring the view. It also deepens the blues in the sky and enhances the contrast between clouds, making for more dramatic landscape shots. The ability to rotate the outer ring of the filter allows you to adjust the level of polarization, fine-tuning the effect to minimize glare precisely where you need it. This is a key feature that distinguishes it from a simple polarizer and is essential for getting the desired result in different orientations to the sun.

Beyond the specific effects, the build quality of these K&F Concept filters is impressive for the price. They are made from imported AGC optical glass, which feels solid and substantial. Crucially, I haven’t noticed any degradation in image sharpness or introduction of unwanted colour casts (like a purple tint sometimes seen in cheaper ND filters). The clarity is excellent. The 28 multi-layer coatings are also a significant feature. From a user perspective, this translates to resilience. The filters repel water effectively – I’ve seen water droplets bead up and roll off, which is fantastic when shooting near splashes or in light rain. They also resist scratches well from typical handling and cleaning, and they seem to be less prone to fingerprints and dust sticking, making cleaning easier. This protection is vital for an action camera lens that’s likely to encounter challenging conditions.

The mounting mechanism is a simple screw-on bayonet design, specifically engineered for the DJI Osmo Action 4/5 Pro lens base. Installation is just a matter of unscrewing the camera’s original lens protector and screwing the desired filter into place. This is generally quick and secure. However, as noted by some, the small size and smooth edges of the filters can make them a little tricky to grip and unscrew if your fingers are cold, wet, or sweaty, which is a minor but occasional annoyance in the field. The fit is precise, with no wobble once installed. The low profile of the filters also means they don’t cause vignetting (darkening at the corners) in standard wide-angle modes, though stacking filters (which isn’t recommended for video due to stabilization issues mentioned elsewhere, but possible for photos) or using certain accessory mounts might affect this.

In summary, the performance of each filter type delivers on the promise. The ND filters effectively manage light for smoother video and richer colours, while the CPL filter drastically cuts glare and boosts contrast. The quality of the optical glass ensures the image itself remains sharp and colour-accurate, and the coatings provide practical benefits in terms of durability and ease of use in varying environmental conditions. These features directly address the core problem of difficult lighting, turning potentially compromised footage into high-quality, visually appealing content.

What Other Users Think

Having scoured various online forums and retail sites, it’s clear that many users share a positive sentiment about the K&F Concept filter set for the Osmo Action cameras. Many reviewers highlight the perfect fit and high-quality feel of the filters, comparing them favourably to more expensive options. Users consistently praise the effectiveness of the ND filters in managing bright light for smoother video motion and the CPL filter’s ability to reduce glare and enhance colours. The optical clarity and the protective coatings are also frequently mentioned as standout features, providing peace of mind and tangible performance benefits.

Bringing It All Together

Capturing compelling footage with your action camera in dynamic outdoor environments is often hampered by challenging light conditions, leading to overexposed skies, washed-out colours, and choppy video motion. Failing to address this means missing out on the full potential of your camera and compromising the quality of your adventures captured on video. The K&F Concept 4-Pack Filter Kit for Osmo Action 4/5 Pro is an excellent solution to these problems. Offering a range of essential ND filters and a versatile CPL, it provides the tools needed to control exposure, manage reflections, and achieve smoother, more cinematic video. The high-quality optical glass and durable coatings ensure that while you’re improving the light characteristics, you’re not sacrificing image clarity or the longevity of the filters themselves. To explore these filters further and enhance your action camera footage, Click here to check the product out.

Last update on 2025-07-14 / Affiliate links / Images from Amazon Product Advertising API