Neutral Density Variable Filter K&F 62mm KF X Fader ND8–ND128 adjustable grey

The Neutral Density Variable Filter K&F 62mm KF X Fader ND8–ND128 adjustable grey is a photographic accessory that offers continuously variable light reduction in a compact 62 mm screw-in design. The filter provides effective control over exposure, enabling slower shutter speeds or wider apertures in bright light conditions while maintaining natural color balance. Constructed with neutral grey optical glass and a rotating control ring, it allows smooth adjustment from approximately 3 stops (ND8) up to 7 stops (ND128), making it suitable for landscape photography, long-exposure techniques and video work where precise light management is required.

Advantages

The variable ND design replaces multiple fixed-density filters, reducing gear weight and increasing flexibility on location. Neutral grey glass minimizes color cast to preserve natural tones in images and footage. A 62 mm thread fits lenses with the same filter diameter and the rotating mechanism provides fine-tuned, continuous attenuation between ND8 and ND128. The slim profile helps prevent vignetting on wide-angle lenses while the screw-in mount ensures stable, secure attachment.

Suitable for

• Landscape photography with long exposures to smooth water and cloud motion
• Portraits or studio work requiring wider apertures in bright daylight
• Videography to maintain slower shutter speeds for cinematic motion blur
• Urban and architectural shooting where controlled exposure is needed

Key specifications

• Filter type: Variable neutral density (adjustable ND8–ND128)
• Thread size: 62 mm screw-in
• Light reduction range: approximately 3 to 7 stops
• Optical material: neutral grey glass
• Mount: rotating control ring for continuous adjustment
• Profile: slim design to reduce risk of vignetting

How to use

Attach the filter to a lens with a 62 mm filter thread by screwing it on until it is secure. Use the rotating control ring to adjust the density: turn slowly while observing the exposure changes in the viewfinder or on the camera’s live view. For long-exposure shots, set the camera on a stable tripod and compose the frame before dialing in the desired ND strength. When using wide apertures in bright light, increase the filter density until the correct exposure is reached without closing the aperture beyond the intended f-stop. Check for potential cross-polarization or X-patterns at extreme settings and reduce density slightly if artifacts appear.

Usage recommendations

Store the filter in a protective case when not in use to avoid scratches and dust. Clean the glass with a soft microfiber cloth and appropriate lens cleaner. For critical color or exposure work, verify results with test shots and consider using a fixed ND or additional filtration if extreme densities introduce artifacts.