K&F CONCEPT 55mm True Color Variable Fader ND2-32 ND + CPL Circular Polarizing Filter (Nano-X Series)

If you shoot photos or video and you keep running into the same problem—too much light but also unwanted glare—this 55mm K&F CONCEPT variable ND + CPL filter is built to tackle both with one piece of glass. It’s designed to darken the scene (via variable ND) while also helping cut reflections (via CPL), which can mean fewer compromises when you’re working around water, glass, or bright skies.

That said, a variable filter combo can be “more convenient than perfect.” If your priority is absolute neutrality across every lighting scenario, you’ll still want to pay attention to your exposure and the way the filter behaves through the full range.

Key takeaways

This is a single 55mm circular filter that combines ND and CPL functions. By rotating the ring you can move through roughly 1 to 5 stops of light reduction (ND2-32 range), and the filter frame is designed to self-lock so it doesn’t drift while you’re shooting. It’s also positioned as a way to improve contrast and color while reducing reflections from non-metallic surfaces like water and glass.

It’s not just a “darken-the-image” tool. The CPL part is where the everyday difference tends to show—think of making a wet road or a window reflection feel less distracting, while also keeping colors looking more natural.

What stands out in real use

The most practical advantage here is workflow: one filter for two jobs. Instead of swapping an ND filter for a polarizer mid-session, you can adjust light reduction and polarization as conditions change.

Here’s a concrete example: you’re shooting a landscape near a lake with bright sky. With a variable ND you can slow the shutter effect or manage exposure for a calmer look, and with CPL you can reduce glare on the water surface so the scene doesn’t look washed out. On a windowed building shoot, CPL can help control reflections so your subject stands out more.

K&F CONCEPT also calls out a few design choices: the filter rotates infinitely between 1 and 5 stops and uses self-locking technology, and it’s meant to avoid the “black cross” artifact that some designs can produce.

Tech specs

• Type: Variable ND & CPL circular polarizing filter in one
• Size: 55mm
• ND range: ND2-32
• Stops of light reduction (claimed): 1 to 5 stops
• Glass/coating: Imported AGC optical glass with multi-layer coating (waterproof, scratch-resistant)
• Coating note: Titanium coating technology to avoid partial yellow and color shift

Where it shines, and where it may not

This filter makes the most sense if you frequently shoot mixed lighting and reflective scenes—water, glass, and bright outdoor setups—where you want to control both exposure and glare without adding extra filters.

It may not be your best pick if you’re the kind of shooter who prefers to standardize on a fixed ND for the most consistent results across the entire adjustment range. Variable NDs can be convenient, but depending on your scene, you may find your results are more “good and controllable” than “completely bulletproof.”

Things to verify before ordering

Two simple checks can prevent a bad match: confirm your lens thread size is 55mm by reading the number next to the ø (diameter) symbol on your lens. Also note the packaging detail: old and new packaging may be distributed randomly, and the product contents will stay the same.

There’s also a practical accessory requirement mentioned for this 55mm filter: a 58mm lens cap is required for this filter.

Is it worth it?

Buy this K&F CONCEPT 55mm True Color Variable Fader ND2-32 ND + CPL filter if you want one 55mm solution to manage both light reduction and reflection control, especially for outdoor work with water, glass, or bright skies. It’s a strong “grab-and-go” approach for creators who don’t want to swap filters constantly.

Skip it if you need the most consistent look possible across all lighting and adjustment extremes, or if you already have a preferred setup that separates ND and polarization for tighter control. In that case, you may be happier with a more specialized approach.

Mini FAQ

Getting the most from it

To get cleaner results, treat the adjustment ring as part of your exposure process: set your ND first for the overall exposure you want, then fine-tune the polarization effect for glare and contrast. Don’t assume it will behave the same in every scene—reflections and skies change quickly as you move.

Will it fit my lens?

It’s listed as compatible with all 55mm lenses, but you should still verify your lens thread size by checking the ø diameter number on your lens.

Does it avoid color shift?

The brand claims the titanium coating technology helps avoid partial yellow and color shift, aiming for true colors for images and videos.

Does it avoid the black cross effect?

The filter frame is designed to avoid producing black crosses, and it uses self-locking technology for stable rotation.

Is it a single-filter solution?

Yes—this is specifically marketed as an ND and CPL filter in one circular filter, so you can control both features through the same filter.