K&F Variable Neutral Density Filter 62mm ND2–ND400 Adjustable (KF01.1402)

The K&F Variable Neutral Density Filter 62mm ND2–ND400 Adjustable is a circular variable ND designed for lenses with a 62 mm filter thread. It provides a continuous density range from ND2 to ND400, allowing precise control over the amount of light reaching the sensor. This adjustable filter enables longer exposures, motion blur effects, and the use of wider apertures in bright conditions without changing shutter speed or ISO settings, making it suitable for landscape photography, long-exposure shots, and video work.

Advantages

The variable ND design eliminates the need to carry multiple fixed-density filters, offering a flexible, compact solution for controlling exposure. The filter's 62 mm mount ensures compatibility with lenses that accept this common thread size, while the smooth density adjustment helps achieve gradual exposure changes. Optical coatings reduce reflections and help maintain image contrast and color fidelity during extended exposures and bright-light shooting.

Suitable for

• Landscape photography requiring long exposures to smooth water and cloud movement
• Video capture where consistent motion blur and slower shutter speeds are needed
• Portraits or shallow depth-of-field work in bright light using wider apertures
• Urban and architectural photography to control highlights and moving elements

Key specifications

• Filter type: Variable Neutral Density (adjustable ND)
• Density range: ND2 to ND400 (continuous adjustment)
• Mount thread diameter: 62 mm
• Optical element: multi-coated glass to reduce reflections and flare
• Construction: slim circular filter design to minimize vignetting on wide-angle lenses

How to use

Attach the filter to the front of a lens with a 62 mm filter thread by screwing it into place until secure. Rotate the front ring to adjust the density and observe the effect in the viewfinder or on the camera monitor; the ND value changes continuously between ND2 and ND400. When composing long-exposure landscapes or video, set the desired shutter speed and aperture and then dial the ND to achieve correct exposure without raising ISO. Be aware of potential cross-polarization effects at extreme settings and check for any color shift when making large adjustments.

Usage recommendations

For best results, use the K&F variable ND with careful exposure testing at different rotation positions, especially at the darkest settings where X-pattern artifacts or color shifts can occur on some systems. Combine the filter with a tripod for long-exposure photography and consider a lens hood to reduce stray light. Clean the glass surfaces with a proper lens cloth before and after use to maintain optimal image quality.