SmallRig ND Filter Kit for DJI Osmo Action 5 Pro / Action 4 (5-pack: CPL + FS ND8/ND16/ND32)

If you film outdoors a lot, exposure control gets old fast—especially when the sun is high and your action cam starts fighting glare. This SmallRig ND filter kit for DJI Osmo Action 5 Pro / Action 4 is designed to give you ND and polarising options in one go, so you can smooth out exposure and reduce reflections without constantly swapping gear.

On paper, it’s a practical set: a CPL (polarising) filter and three “FS ND” filters (ND8, ND16 and ND32), plus a silicone lens cover for storage. The key idea is that the filters use full-spectrum technology to reduce light uniformly across wavelengths, aiming to keep colour looking natural rather than tinted.

Key takeaways

What you’re really buying here is flexibility. The kit covers a range of brightness situations—FS ND8 for brighter daylight, ND16 for more moderate light, and ND32 for very bright conditions or longer creative exposures. Add the CPL for situations where reflections and glare get in the way, such as shooting through windows or dealing with shiny surfaces. The included lens silicone cover is a small detail, but it helps keep the lens surface safer when the camera is packed away.

The “snap-on” approach (without removing the lens) is also worth noting if you change settings on the move. It’s the kind of feature that’s convenient when you’re between locations and don’t want to faff.

That said, this is a focused kit: it’s not a bundle of every filter strength under the sun, and it won’t replace good shooting discipline (for example, you still need to choose the right shutter/ISO/aperture settings to match the scene).

What matters most for everyday shooting

This kit is built around two everyday problems: too much light and unwanted reflections.

• ND filters help you keep exposure under control in brighter environments, which can be handy for reducing “blown” highlights and achieving smoother motion effects depending on your settings.
• The CPL is there for clarity when light bounces off surfaces. Over water it can help cut glare, and with windows it can make the difference between a usable view and a washed-out reflection.

There’s also a lens-cover included, specifically described as a soft silicone cover to help protect against scratches during storage and transport. That’s the kind of practical add-on that gets forgotten when you only look at the filters themselves.

Where it shines (and where it may not)

This set makes the most sense if you often shoot in variable daylight—think outdoor adventures, bikes on bright days, beach walks where glare is constant, or travel footage where you’ll want options quickly.

It may not be the best fit if your style is mostly low-light indoor work or controlled studio scenes. ND filters are most useful when you need to tame daylight brightness, if your lighting rarely gets that strong, you might end up using only one or two filters most of the time.

Also, keep expectations realistic: while the kit is designed to reduce issues like lens flare and improve contrast, no filter is a magic wand. In harsh conditions, composition and camera settings still matter.

Quick overview of the filter build

SmallRig positions these filters as HD optical glass with multi-coatings. The description also mentions nano coating, and that coatings are applied on both sides to improve colour accuracy, while also aiming to provide water and oil resistance for easier cleaning.

A further point for reliability: the kit claims strong chemical stability for lasting performance in demanding shooting conditions. Again, that’s a “designed-for” promise rather than a lab report—but it does suggest this is meant for real-world handling, not just careful shelf use.

Fitting and compatibility check

The kit is explicitly made for the DJI Osmo Action 5 Pro / Action 4. It uses a snap-on style designed for quick installation “without removing the lens”, which should reduce downtime when you’re changing filters.

Before buying, it’s still worth checking that your exact camera model matches the stated compatibility and that you’re comfortable with snap-on handling in wet or windy conditions. Snap-on is convenient, but like any accessory, it’s better when you can fit it cleanly and keep the front element protected.

Mini FAQ

Will the filters change colours?

The kit is designed to reduce colour shifts by using full-spectrum technology that reduces light uniformly across wavelengths. The goal is real colour reproduction, not tinted results.

What’s the difference between ND8, ND16 and ND32 here?

The description frames them as a practical range: ND8 for brighter daylight to keep exposure balanced, ND16 for moderate light, and ND32 for strong light and more creative long-exposure style effects depending on how you shoot.

When should I use the CPL?

Use it when reflections and glare are hurting your footage—such as under water or when shooting through glass/windows, where the polarising effect can improve clarity.

Is the silicone lens cover useful?

It’s included for storage and transport protection, specifically to help guard against scratches. If you travel or throw your camera into a bag often, that small extra piece matters.

Is it worth it?

This SmallRig ND Filter Kit is a sensible pick if you want a ready-made ND + polarising setup for DJI Osmo Action 5 Pro / Action 4 and you regularly shoot in daylight where exposure control and glare reduction make a real difference. The five-pack coverage (CPL plus ND8/ND16/ND32), the quick snap-on approach, and the included lens silicone cover all point to a kit aimed at everyday use rather than one-off projects.

You may want to skip it if your filming is mainly low-light/indoor, or if you’re unlikely to change filter strength often. And if you already have ND or CPL filters that match your habits, this could be more than you need. Still, for most people who want options without constantly switching accessories, it’s the kind of bundle that earns its keep quickly.