Control exposure with the K&F Concept ND2-ND400 Variable Neutral Density Camera Lens Filter, available in multiple sizes and series. Featuring premium optical glass, adjustable 18.6 stop light reduction, multi-coated and nano-coated options, and a precision rotating aluminium frame, it's ideal for long-exposure photography, videography and creative shooting in bright conditions.
Take complete control of your exposure with the K&F Concept ND2-ND400 Variable Neutral Density Camera Lens Filter. Available in a wide range of filter thread sizes, this versatile variable ND filter allows photographers and videographers to precisely reduce the amount of light entering the lens, making it easier to achieve slower shutter speeds and wider apertures even in bright lighting conditions.
With an adjustable light reduction range from ND2 (1 stop) to ND400 (approximately 8.6 stops), this filter offers exceptional flexibility without the need to carry multiple fixed ND filters. Simply rotate the filter ring to dial in the desired level of light reduction, allowing you to adapt quickly to changing lighting conditions.
To provide the best balance of performance, durability and value, this product includes filters from two K&F Concept filter series depending on the filter size selected. Both series feature precision optical glass and lightweight aluminium alloy frames, while the Nano B Series incorporates enhanced nano-coating technology for improved optical performance and durability.
Ideal for landscape photography, long exposures, waterfalls, seascapes, architectural photography and professional video production, the K&F Concept ND2-ND400 Variable ND Filter gives you the creative freedom to capture stunning results in almost any lighting environment.
K&F Concept Filter Series
B Series (37mm, 40.5mm, 43mm & 46mm)
The B Series offers excellent value and dependable performance for everyday photography and videography. Manufactured using high-quality optical glass with multi-layer coatings, these filters deliver accurate colour reproduction, reduced reflections and smooth variable light reduction. They are ideal for photographers looking for reliable performance at an affordable price.
Nano B Series (49mm, 52mm, 55mm, 58mm, 62mm, 67mm, 72mm, 77mm & 82mm)
The Nano B Series builds on the B Series by incorporating advanced nano multi-layer coatings that improve light transmission while reducing flare, ghosting and unwanted reflections. The nano coating also provides excellent resistance to water, oil, dust and fingerprints, making these filters easier to clean and better suited to demanding outdoor environments. This series is an excellent choice for enthusiasts and professionals who require enhanced durability and optical performance.
Why Use a Variable ND Filter?
A Variable Neutral Density (VND) filter reduces the amount of light entering your camera without affecting colour balance. Unlike fixed ND filters, a variable ND filter allows you to quickly adjust the amount of light reduction by simply rotating the outer ring, making it ideal for changing shooting conditions.
Using a Variable ND filter allows you to:
- Create smooth, silky waterfalls and flowing rivers
- Capture motion blur in clouds, crowds and moving subjects
- Shoot at wider apertures for beautiful background blur in bright daylight
- Maintain cinematic shutter speeds when recording video outdoors
- Reduce overexposure without changing ISO or aperture
- Replace multiple fixed ND filters with one versatile solution
Whether you're photographing landscapes, shooting cinematic video or creating long-exposure images, a Variable ND filter provides greater creative flexibility and a faster workflow.
Premium Optical Performance
Every K&F Concept ND2-ND400 Variable ND Filter is manufactured using high-quality optical glass and a precision aluminium alloy frame. Depending on the selected series, the filter features either multi-layer or advanced nano multi-layer coatings that help minimise ghosting, flare and unwanted reflections while maintaining excellent image sharpness and natural colour reproduction.
The precision-engineered rotating filter ring provides smooth, consistent adjustment throughout the ND2-ND400 range, allowing precise exposure control for both photography and video applications.
Available Sizes & Series
This is a variable product available in multiple filter thread sizes.
| Filter Size | K&F Concept Series |
| 37mm | B Series |
| 40.5mm 43mm | B Series B Series |
| 46mm | B Series |
| 49mm | Nano B Series |
| 52mm | Nano B Series |
| 55mm | Nano B Series |
| 58mm | Nano B Series |
| 62mm | Nano B Series |
| 67mm | Nano B Series |
| 72mm | Nano B Series |
| 77mm | Nano B Series |
| 82mm | Nano B Series |
Simply select the correct filter diameter for your lens before placing your order.
Tip: Your lens filter size is printed on the front of your lens or inside the lens cap and is indicated by the Ø symbol (for example, Ø67mm).
Ideal For
The K&F Concept ND2-ND400 Variable ND Filter is ideal for:
- Landscape Photography
- Long Exposure Photography
- Waterfall Photography
- Seascape Photography
- Travel Photography
- Architectural Photography
- Portrait Photography
- Videography
- Filmmaking
- Content Creation
K&F ND2-ND400 Filter Specs
| Specification | Details |
| Enclosure Material | Optical Glass |
| Water Resistance | Waterproof |
| Compatible Devices | Cameras with matching lens thread size |
| Exposure Control | Manual (M) |
| Colour | Black |
