K&F Nano-X ND2-ND400 Variable ND Filter 67mm 1-9 Stops
Product Description
The K&F Nano-X ND2-ND400 is a 67mm variable neutral density filter giving 1 to 9 stops of adjustable light reduction, letting you dial exposure like a volume knob for stills and video.
It works by opposing two polarised elements: rotating the outer ring increases or decreases the darkening from ND2 to ND400 (density 0.3 to 2.7), with smooth action and no hard stops, plus dot and arrow calibration marks for repeatable results. This lets you use slower shutter speeds or wider apertures in bright light, for motion blur, shallow depth of field, or cinematic aperture control on video. An orange rotation tab adds leverage for easier, more secure handling.
Ideal for: photographers and videographers who want a single adjustable ND for bright-light long exposures, shallow depth of field, and consistent video exposure without swapping fixed filters.
In harsh daylight, a camera's aperture, shutter, and ISO can all top out, leaving no creative headroom. This filter acts as a fourth exposure control, and its slim 7.4mm double-threaded aircraft-aluminium frame stacks with other filters while reducing the risk of vignetting on wide lenses.
Please note: At the extreme end of the darkening range, variable ND filters can show a dark X cross across the frame. This is a normal byproduct of cross-polarisation (affected by focal length and lens type), not a fault, and clears by rotating the ring back from the maximum.
Key Features
- 1 to 9 stops variable: ND2 to ND400 (density 0.3 to 2.7) by rotating the ring.
- Nano-X optical quality: Japanese AGC glass, double-sided polished for up to 8K capture.
- 28-layer multi-coating: reduces reflections and ghosting, raises light transmittance.
- Hydrophobic and scratch-resistant: water-repellent, durable outer coating.
- Orange rotation tab: extra leverage for secure fitting and precise dialling.
- Calibration marks: dot and arrow markers for repeatable settings.
- Slim double-threaded frame: 7.4mm aircraft-aluminium, stacks with other filters and reduces vignetting.
- Includes a PU leather case: magnetic flip cover with a pull tab for touch-free access.
Specifications
| Specification | Detail |
|---|---|
| Model | K&F Nano-X ND2-ND400 |
| Filter thread | 67mm |
| Type | Variable ND (VND) |
| Range | 1 to 9 stops (ND2-ND400) |
| Density | 0.3 to 2.7 |
| Glass | Japanese AGC optical glass, double-sided polished |
| Coating | 28-layer multi-coating, hydrophobic and scratch-resistant |
| Frame | Aircraft-aluminium alloy with rotation tab |
| Frame thickness | 7.4mm (double threaded) |
| Series | Nano-X |
What's Included
- 1 x K&F Nano-X ND2-ND400 variable ND filter (67mm)
- 1 x PU leather filter case
