Neutral Density Variable Filter K&F CONCEPT 58mm FADER Nano-C ND2–ND2000 (adjustable, grey)

The Neutral Density Variable Filter K&F CONCEPT 58mm FADER Nano-C ND2–ND2000 (adjustable, grey) is a screw-on variable ND designed for lenses with a 58mm filter thread. It provides a continuous density range from approximately ND2 to ND2000, allowing precise control over light transmission to achieve longer shutter speeds, wider apertures in bright light, or creative motion blur effects. The optical surface features an anti-reflective Nano-C coating that reduces flare and internal reflections for improved contrast and color fidelity when working in challenging lighting conditions.

Advantages

The variable design replaces the need to carry multiple fixed-density filters, offering immediate adjustment between light reductions without swapping filters. The Nano-C anti-reflective coating minimizes ghosting and unwanted reflections while maintaining neutral color balance. The filter is built to thread directly onto 58mm lens barrels for a compact, low-profile fit that preserves handling and composition during use.

Suitable for

• Landscape photography with extended exposures to smooth water and clouds
• Long-exposure urban and architectural photography to blur crowds or traffic
• Motion-blur effects for waterfalls, rivers, and moving subjects
• Controlling depth of field outdoors when shooting wide apertures in bright light

Key specifications

• Filter thread size: 58 mm
• Type: Variable neutral density (adjustable)
• Density range: ND2 to approximately ND2000 (continuous)
• Color: Grey (neutral transmission)
• Coating: Anti-reflective Nano-C coating to reduce flare and reflections
• Mount: Screw-on (standard 58 mm male thread)

How to use

Screw the filter onto the front of a lens with a 58 mm filter thread until it seats gently; avoid over-tightening. Rotate the front element to adjust the light reduction and observe the effect in the viewfinder or on the camera live view until the desired exposure or motion effect is achieved. When using wide apertures and long exposures, use a tripod and mirror lock-up or electronic first curtain where available to minimize camera movement. Monitor histogram and highlight warnings to ensure correct exposure as density is changed.

Usage recommendations

When using the variable ND at extreme settings, check for possible cross-polarization or uneven darkening at wide angles; if visible, reduce the density slightly or stop down the lens. Clean the coated surfaces with a soft microfiber cloth and appropriate lens cleaner to maintain coating performance. Store the filter in a protective case when not in use to prevent scratches and dust accumulation.