K&F Concept 4-Pack Filters for DJI Osmo Action 5 Pro & Action 4: CPL, ND8, ND16, ND32

What it is and what it solves

This is a four-filter kit from K&F Concept designed specifically for the DJI Osmo Action 5 Pro and Action 4 cameras. The set includes a CPL filter and three ND filters (ND8, ND16, ND32). The aim is straightforward: give you control over light and reflections without compromising image quality, so you can shoot in bright conditions or outdoors with more creative options.

Build quality and optical design

Each filter uses AGC optical glass, chosen to minimise colour shifts and preserve the camera’s native colour rendering. The kit boasts 28-layer coatings, intended to reduce glare, flares and water or oil smudges. In practice, this means the filters should stay clearer in challenging light and easier to clean, which matters when you’re shooting on location or during travel.

How ND and CPL help in real life

• ND filters (ND8, ND16, ND32) reduce the amount of light entering the sensor, allowing slower shutter speeds or wider apertures in bright scenes. If you’re aiming for motion blur in a sunny scene or a shallower depth of field effect, these can help you achieve that without overexposing the shot.
• The CPL filter tackles glare from non-metallic reflective surfaces (think water, glass, foliage) and helps deepen colours and contrast in outdoor scenes. It’s worth noting that a CPL is most effective when the sun is at a specific angle, so you may need to rotate it for best results.

Practical notes on compatibility and installation

The frame design is described as a screw-on, ultra-thin bezel system that should mount directly to the Osmo Action lenses. From a user perspective, the installation should be straightforward: align the filter with the lens base, rotate lightly, and screw in. It’s designed to fit the body lens base closely to avoid gaps, which can reduce the risk of light leaks and wobble.

Pros and cons at a glance

What stands out: a compact four-filter solution for both the Action 5 Pro and Action 4, with dedicated lens fits and robust coating. The combination covers two core photographic needs—managing light and combatting reflections—without needing multiple separate accessories. What may not be perfect: if you rarely shoot in very bright conditions or don’t use a polariser regularly, the CPL might see less daily use. As with any external filter, you’ll want to keep it clean to maintain image clarity, especially in dusty or wet environments.

Who it’s for and who might skip it

If you frequently shoot outdoors, travel with your Osmo Action and want more control over exposure and reflections, this kit is a practical starting point. It embodies a mid-range approach: useful and capable without venturing into premium, higher-cost filter systems. If your shooting is mostly indoors or in controlled light, you may find fewer benefits from adding filters.

When it makes sense to buy

Consider this kit when you need predictable exposure control in bright daylight, or when you want to tame glare from water or glass surfaces while keeping the camera compact and portable. If you already own a similar ND/CPL set, compare compatibility with the Osmo Action’s specific mounts to ensure a snug fit and easy rotation.

What to check before purchase

Verify that the kit is explicitly marketed for the DJI Osmo Action 5 Pro and Action 4, and that the frame design aligns with the camera’s lens base. Consider how often you’ll use each filter type in your typical shooting scenarios and whether a single polariser covers your most common outdoor situations.

Practical usage example

Imagine filming a rugged lakeside scene at a late afternoon sun. You can attach the ND8 to keep shutter speeds reasonable for motion in bright water, add the CPL to cut glare off the lake surface, and switch to ND16 for a softer motion blur when the light shifts. The result is a more balanced exposure with richer skies and more detailed reflections, without overexposing the scene.

FAQ

• What exactly is included in the pack? A CPL filter plus ND8, ND16 and ND32 filters, all designed to fit DJI Osmo Action 5 Pro and Action 4.
• How do ND filters affect exposure? ND filters reduce the amount of light reaching the sensor, allowing slower shutter speeds or wider apertures in bright conditions.
• Is the CPL always necessary? Not always, it’s most beneficial when shooting outdoors with reflective surfaces. Its effect depends on the angle to the light source and your scene composition.

Is it worth it?

Worth considering if you want a compact, dedicated filter kit that covers common outdoor scenarios for the Osmo Action 5 Pro and Action 4. It isn’t the cheapest option, but the all-in-one approach can save time and help maintain image quality in varied lighting conditions.