Variable ND Filter K&F 72mm K&F X Fader Gray ND8–ND128 (adjustable) SB6627

The Variable ND Filter K&F 72mm K&F X Fader Gray ND8–ND128 (adjustable) is a screw-mount neutral density filter designed to reduce the amount of light entering the lens. With an adjustable density range from ND8 to ND128 it allows longer exposures or wider apertures in bright conditions without changing ISO settings. The filter fits lenses with a 72mm filter thread and is intended for photographers who need flexible light control for landscape, long-exposure, and motion-blur photography.

Advantages

This adjustable gray ND filter provides continuous light attenuation between ND8 and ND128, enabling precise exposure control and creative flexibility. The 72mm screw-mount design ensures direct compatibility with lenses that have the same thread size, eliminating the need for step-up rings when matched correctly. Constructed to preserve color balance and image sharpness, the filter reduces light evenly across the frame to support consistent results during extended exposures.

Suitable for

• Landscape photography requiring long exposures to smooth water and clouds
• Long-exposure urban and architecture shots to blur moving people or traffic
• Motion-blur and creative effects with slower shutter speeds
• Reducing depth-of-field in bright light by allowing wider apertures

Key specifications

• Filter type: Variable neutral density (adjustable)
• Density range: ND8–ND128 (continuous)
• Mount: 72mm screw-in filter thread
• Color: Gray neutral density
• Primary use: Light reduction for extended exposures and aperture control

How to use

Screw the filter onto a lens with a 72mm front thread until it is securely seated, taking care not to cross-thread. Compose and focus before applying strong ND settings when using autofocus systems that may struggle in low light. Rotate the front ring to adjust the density between ND8 and ND128; monitor exposure values and histogram while adjusting to achieve the desired shutter speed or aperture. When using long exposures, stabilize the camera on a tripod and use a remote release or self-timer to avoid camera shake.

Usage recommendations

For best results, set focus and compose the scene before increasing ND strength. Use a sturdy tripod for exposures longer than a second and check for any vignetting at wide angles. When stacking filters or using polarizers, verify that rotation of filter elements does not introduce uneven darkening or cross-polarization effects.