ND2-ND400 vs ND32-512: Which K&F Variable ND Fits?
By Camix | Published: 2026-10-31
Category: Comparisons
Compare the K&F Concept ND2-ND400 86mm fader and ND32-512 82mm Nano-X variable ND on density range, thread size and price to pick the right one for your lens and shoot.
Quick answer
Choose the K&F Concept ND2-ND400 86mm fader if you need a wide, flexible density range and your lens takes 86mm filters; choose the ND32-512 82mm Nano-X if you shoot in bright light and want stronger darkening at a lower price.
Density range: flexibility vs. strong bright-light control
The ND2-ND400 gives you a broad spread from very light to deep neutral density, so it covers a lot of lighting situations without swapping filters. The ND32-512 starts much darker and reaches further into heavy cut, which is useful when the sun is the main problem.
If you often move between shade and direct sun, the broader ND2-ND400 range is easier to live with. If most of your shooting happens in hard daylight, the ND32-512 keeps you in its useful zone more often.
Thread size decides more than the label
The ND2-ND400 is an 86mm filter and the ND32-512 is 82mm. That difference matters because a variable ND should match your lens thread or sit on a step-up ring you are happy to use. Check your lens front thread before comparing density ranges.
Neither listing supplies the step-up ring or adapter, so plan for that separately if your lens does not match the filter thread.
Price and warranty context
At catalog prices, the ND32-512 82mm is the lower-cost option, while the ND2-ND400 86mm sits higher. Both listings include a 1-year warranty and free UK delivery, so the practical difference is the density range and thread size rather than after-sales terms.
Trade-offs to weigh before you buy
- Range vs. bright-light strength: Pick ND2-ND400 for flexibility across changing light; pick ND32-512 when most of your work is in strong daylight and you want deeper cut. List your three most common lighting conditions before choosing.
- 86mm vs. 82mm thread: Match the filter to your lens thread. If your lens is 82mm, the ND32-512 mounts directly; if it is 86mm, the ND2-ND400 does. Otherwise budget for a step-up ring. Check the front thread diameter printed on your lens cap or barrel.
- Price vs. reach: The 82mm ND32-512 is the lower-priced option in the catalog, but it will not give you the light-density end of the ND2-ND400. Decide whether the lighter end matters for your video or stills work. If you often shoot wide open in shade, the lighter end is worth paying for.
Product facts
- K&F Concept 86mm ND Filter ND2-ND400 High Definition Nano X Adjustable Fader Neutral Density Filter: 86mm adjustable fader with ND2-ND400 range and 1-year warranty. A broad density range suits mixed lighting, but you need an 86mm lens thread or a step-up ring.
K&F Concept 86mm ND Filter ND2-ND400 High Definition Nano X Adjustable Fader Neutral Density Filter - K&F Concept ND32-512 Nano-X Variable 82mm Filter: 82mm Nano-X variable ND with ND32-512 range and 1-year warranty. The darker starting point helps in bright daylight, and the 82mm thread fits lenses that size directly.
K&F Concept ND32-512 Nano-X Variable 82mm Filter
Which one fits your shoot?
Best for
- Shooters who need one variable ND across mixed indoor and outdoor light
- Lenses with an 86mm front thread or a step-up ring already in the bag
Not for
- Lenses with an 82mm thread and no step-up ring
- Shooters who mostly work in hard midday sun and want the darkest starting point
