NEEWER Rotating CPL Filter for GoPro Hero 13/12/11/10/9 (FL-GP23) – Multicoated HD polariser

What it is and why action shooters actually use a CPL

A CPL filter (circular polariser) is one of those accessories that sounds technical until you’re outside with glare everywhere. The NEEWER rotating CPL filter for Hero 13/12/11/10/9 is built to help you control reflections and improve the look of your footage, especially when there’s sun on water, glass, or glossy surfaces.

On a GoPro-style action camera, the benefit is practical: you can dial in the polarisation effect by rotating the filter ring, rather than swapping filters or guessing. That rotation is the main “feel” of this product—turn it slightly, check your framing, then settle on the angle that reduces the unwanted brightness and brings detail back.

It’s not perfect for every scenario, though. Polarisation can be less dramatic in some lighting/sky conditions, and it won’t magically fix overexposure. Also, even if the filter itself is described as water-resistant, the note is clear that you shouldn’t use the camera under water while this is fitted.

Key benefits: glare control and more convincing colour

Where this filter tends to earn its keep is in real-world highlights—water ripples, car windows, shop fronts, or anything shiny that throws back the sun. By reducing non-metal reflections, a CPL can make scenes look calmer and more readable.

The base description also points to boosted saturation and contrast. In plain terms, that often means: - colours can look a bit more “alive” rather than washed out by haze and glare - finer details can stand out more, particularly on textured surfaces

There’s a sensible trade-off to keep in mind: because a polariser changes what light reaches the sensor, it may make the overall exposure feel different depending on the conditions. If you rely on a very specific exposure look, you’ll want to check your settings and test before committing to a long run.

What stands out about the rotating design

The rotating element is the core idea here: you align the filter with the lens position, fit it, then rotate smoothly to get the polarisation effect you want.

This matters because reflections aren’t always at one fixed angle. As you walk, pan, or tilt the camera, the best polarisation angle can shift. Being able to adjust on the fly is a more flexible approach than using a fixed polariser.

A quick micro-example: imagine filming a coastal path with bright, choppy water in the frame. With a CPL on, you’d start with the filter roughly set, then rotate while watching for the water glare to drop and the surface texture to become more visible. Once the reflections calm down, you lock in the setting and shoot your sequence.

Tech specs (the parts you’ll want to know)

• Name: Neewer Rotating CPL Filter for Hero 13
• Type: Circular polariser (CPL) filter
• Format: Rotating adjustable circular polarizer
• Material: Multicoated HD optical glass (water-resistant coatings noted)
• Compatibility: GoPro Hero 13, 12, 11, 10, 9 Black (action camera fit as stated)
• Model code: FL-GP23

A couple of practical caveats are worth repeating: the filter is described as water-resistant, but it’s not intended for underwater use, and the camera itself can’t be used under water with this setup.

Durability and handling: coatings help, but care still matters

The description highlights multicoated HD optical glass, with coatings on both sides that are resistant to water, fingerprints, stains, and scratches. That kind of resistance is useful if you’re shooting outdoors where you’re constantly wiping smears off the front element.

Still, it’s wise to treat it like a lens component rather than a rugged window. In muddy, sandy conditions, quick wipes can turn into scratches over time, so you’ll get more longevity by rinsing or using proper lens cloth habits when possible.

Also note the installer approach: you remove the original lens cover from your action camera, align the filter with the lens position, then rotate gently to secure. If you’re frequently swapping filters in the field, that extra step is part of the deal.

Who it suits (and who may want to skip it)

This CPL filter makes the most sense if you regularly shoot scenes with heavy reflections—think water sports, seaside trips, city streets with reflective windows, or any environment where glare hides detail.

It also suits people who prefer adjusting for the moment. If you’re the type to tweak the camera angle and want the filter effect to follow, rotating is a genuinely helpful feature.

It may not be the best fit if you mostly film indoors, in flat, even light, or you rarely encounter glare. For those situations, the benefit may feel subtle, and it can become “another thing to fit” without much payoff. It might also be a mismatch if you specifically need underwater use—because the guidance here is that underwater operation isn’t intended.

Getting the most from it: a few practical tips

• Before you record a full take, rotate the filter while watching the bright areas in your view. If reflections reduce and detail looks cleaner, keep that position.
• Don’t assume it’s a one-size-fits-all setting across different locations, polarisation can look different as you change angles.
• If you find your footage looking darker or less punchy than expected, that’s a cue to re-check exposure settings rather than forcing the filter angle.

A final note to keep you grounded: a CPL can improve look, but it can’t replace good technique. It won’t solve dirty lenses, bad focus, or movement blur.

Final verdict

It’s worth considering the NEEWER rotating CPL filter for GoPro Hero 13/12/11/10/9 if you want a practical way to dial down non-metal glare and pull out more colour and detail in bright outdoor scenes. The rotating mechanism is the reason to buy—it makes the polarisation effect adjustable rather than guesswork.

You may want to skip it if you rarely shoot reflective environments, or if underwater filming is part of your routine. Also, bear in mind that the filter’s water-resistant wording doesn’t translate to underwater camera use.

For buyers weighing “do I actually need a filter?”, think of this as a targeted upgrade: less about general improvement, more about controlling reflections when the sun and shiny surfaces are doing their worst.

Mini FAQ

Does this filter work for GoPro Hero 13 as well as older models?

The description states compatibility with GoPro Hero 13, 12, 11, 10, and 9 Black, so it’s positioned for that range.

Can I use the filter underwater?

No. Even though the filter is described as water-resistant, the note says it’s not designed for underwater use, and the camera can’t be used under water with it.

What does rotating the filter actually do?

Rotating the circular polariser changes the strength and direction of the polarisation effect, which helps reduce reflections and glare from non-metal surfaces.

Will it improve colours in every situation?

It can help saturation and contrast, but results depend on light and angles—if glare isn’t an issue, the improvement may feel limited.

How do I fit it?

You remove the camera’s original lens cover, align the filter with the lens position, then rotate gently to ensure it’s secured.