K&F Concept Push-in CPL ND Filter Kit for DJI Osmo Action 5/4/3

In this review of the K&F Concept Push-in CPL ND Filter Kit, the bottom line is simple: vloggers and outdoor action shooters who want control over exposure and glare will appreciate this compact, easy-to-use set. The kit includes a polarized filter and five neutral density options that reduce light by 3 to 10 stops, so it is aimed at users who film in bright conditions and want natural motion blur or richer color without fiddling with exposure settings. Installation is straightforward thanks to the push-in fit and the multi-coated AGC glass keeps images sharp.

Key Features

• 6-Pack filter set: Includes CPL, ND8, ND16, ND32, ND64, and ND1000 to cover a wide range of bright-light shooting scenarios.
• Light reduction: ND filters provide 3 to 10 stops of light control so the camera can achieve balanced exposure and motion blur in bright sunlight.
• Polarizing control: The CPL filter reduces non-metallic reflections from water and glass and improves color and contrast for scenic footage.
• High-definition glass: Made from AGC optical glass with double-sided 28-layer nano coatings to maintain clarity while adding water repellency and scratch resistance.
• Push-in fit: Designed to mount directly without removing the protective filter, making changes quick for run-and-gun filming.
• Multi-coated finish: The coatings lower reflections and support consistent image quality across the filter set.

Who It's For

This kit is best for DJI Osmo Action 5, 4, and 3 owners who shoot outdoors, including travel vloggers, watersports enthusiasts, and action videographers who need predictable exposure under bright conditions. The variety of ND stops plus a CPL gives them flexibility to capture motion blur, reduce highlights, and deepen colors without extensive camera setup.

It may not be ideal for users who rarely shoot in bright daylight or who need specialty filters beyond CPL and ND, such as variable NDs or uneven graduated filters. Also, those needing threaded screw-in filters for other lens systems should look for a different mounting style.

Pros & Cons

Pros

• Good range of ND stops and a CPL give practical exposure and glare control for most sunny outdoor shoots.
• Push-in mounting is fast and preserves the camera's protective filter for quick swaps.
• Multi-coated AGC glass appears to keep images sharp and resists water and light scratches.
• Well-priced for a six-piece set that covers many shooting situations.

Cons

• Some users report mixed impressions of image quality and functionality, so expect slight variation in real-world results.
• Push-in style is specific to compatible action cameras and is not a universal screw-in solution.

Specifications

Compatibility	DJI Osmo Action 5 / Osmo Action 4 / Osmo Action 3
Included filters	CPL, ND8, ND16, ND32, ND64, ND1000 (6-Pack)
Light reduction	3 to 10 stops (ND8 to ND1000)
Glass	AGC optical glass with double-sided 28-layer nano coating
Mount type	Push-in fit (no screw-in required)
Coatings	Multi-coated, water repellent, scratch resistant

Our Verdict

The K&F Concept 6-pack is a practical, economical option for action camera users who film outdoors and need reliable exposure control and reduced glare. It combines useful ND stops with a CPL and durable multi-coated glass, making it a good value for vloggers and outdoor filmmakers who want improved image quality without complex accessories.

Frequently Asked Questions

Will these filters fit my Osmo Action camera?
They are designed for DJI Osmo Action 5, 4, and 3 models and use a push-in mounting system intended for those cameras.

How much light do the ND filters block?
The ND filters in this kit reduce exposure by approximately 3 to 10 stops, covering ND8 through ND1000 for a range of bright-light control.

Does the CPL affect image sharpness?
The CPL and ND filters use AGC optical glass with multi-layer nano coatings to minimize reflectivity and preserve image clarity, though user reports on image quality are mixed.