K&F Concept
K&F Concept ND8-2000 Variable ND Filter 40.5mm
Adjustable ND8 to ND2000 filter cuts light by 3 to 11 stops for long exposures and shallow depth of field on 40.5mm threads
- TypeNeutral Density
- Size40.5mm
- CoatedMulti-Coated
- CompatibilityAll DSLR Camera
- Package Contents1*ND8-2000 Filters
- Adjustable ND8-ND2000 range covers 11 stops for flexible exposure control
- Multi-resistant nano coating repels water oil dust and reduces flare ghosting
- 5 mm thread fits all DSLR lenses with matching diameter
- 5 mm slim CNC trapezoidal frame ensures smooth rotation and wide-angle vignette-free use
- Enables slow shutter speeds for motion blur in waterfalls clouds and moving subjects
40.5 mm Variable ND Filter
The K&F Concept ND8-2000 is a variable neutral density filter that threads onto 40.5 mm lens barrels. It lets photographers and videographers reduce incoming light by rotating the front ring, enabling longer exposures or wider apertures in bright conditions without changing filters.
Suited for creative motion blur and depth control
This filter suits shooters who want to smooth waterfalls, clouds or traffic using slow shutter speeds, or who need shallow depth of field in strong daylight. It is not for lenses with a different thread diameter, nor for users who require a fixed-stop ND or a circular polariser function.
Verify thread size and vignetting risk
Before ordering, confirm the lens barrel carries the ø40.5 mm marking, usually found under the front cap or on the barrel side. The frame thickness is 7.5 mm, so check whether stacking or ultra-wide focal lengths cause corner darkening on your specific lens.
Highlights
- Adjustable ND8-ND2000 range covers 11 stops for flexible exposure control
- Multi-resistant nano coating repels water oil dust and reduces flare ghosting
- 5 mm thread fits all DSLR lenses with matching diameter
- 5 mm slim CNC trapezoidal frame ensures smooth rotation and wide-angle vignette-free use
- Enables slow shutter speeds for motion blur in waterfalls clouds and moving subjects
Specifications
| Brand | K&F Concept |
|---|---|
| Model | ND8-2000 |
| Part Number | 40.5mm |
| Type | Neutral Density |
| Size | 40.5mm |
| Coated | Multi-Coated |
| Compatibility | All DSLR Camera |
| Package Contents | 1*ND8-2000 Filters |
Questions about this item
What lens thread size does the 40.5mm filter fit?
It fits lenses with a 40.5mm front thread, marked with the ø symbol on the barrel or under the lens cap.
Will the 7.5mm frame thickness cause vignetting on my wide-angle lens?
The 7.5mm frame is slim, but vignetting depends on your specific lens focal length and sensor size; test at the widest setting.
How can I confirm the ND8-2000 range is working after mounting?
Rotate the ring from MIN to MAX; exposure should shift by about 8 stops, letting you blur waterfalls or clouds at slow shutter speeds.
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