Neutral Density Variable Filter K&F 67mm (FADER ND8–ND2000) — adjustable gray ND filter

The K&F Neutral Density Variable Filter 67mm (FADER ND8–ND2000) is an adjustable gray filter that reduces the amount of light entering a lens to enable longer exposures, controlled motion blur and use of wider apertures in bright conditions. It fits lenses with a 67 mm filter thread and combines a metal frame with optical glass elements to provide stable mechanical support and consistent image quality across the adjustable density range from approximately 3 stops (ND8) up to about 11 stops (ND2000). The filter is suitable for landscape, architecture and video work where exposure control and shallow depth of field or slower shutter speeds are required.

Advantages

The metal housing gives secure mounting and resists wear during repeated attachment and removal, while the optical glass construction aims to minimise colour cast and preserve sharpness across the frame. The variable design replaces multiple fixed ND filters, offering continuous density adjustment without changing filters and saving time on set. Lightweight and compact, the filter is convenient to carry in a photo bag and quick to fit to a 67 mm lens thread.

Suitable for

• Long exposure landscape photography
• Creating motion blur for waterfalls, rivers and moving traffic
• Video recording requiring controlled shutter speeds in bright light
• Using wide apertures outdoors to reduce depth of field

Key specifications

• Thread size: 67 mm
• Density range: variable ND8 to ND2000 (approx. 3 to 11 stops)
• Construction: metal frame with optical glass elements
• Effect: adjustable light reduction for long exposures and aperture control
• Typical applications: landscape, architecture, video, creative motion effects

How to use

Attach the filter to a lens with a 67 mm thread and rotate the adjustable ring to set the desired light reduction. When composing for long exposures, choose an exposure time and aperture that achieve the intended motion blur or depth of field, then fine-tune the filter position while observing the viewfinder or live view histogram to avoid under- or overexposure. For video, set shutter speed according to frame rate and adjust the filter to maintain correct exposure without altering aperture or ISO. Check images for any changes in colour balance and make minor corrections in-camera or during post-processing if needed.

Usage recommendations

To minimise potential cross-polarisation effects and vignetting, avoid extreme rotations with very wide-angle lenses and use the filter within its effective density range for your focal length. When shooting long exposures, use a stable tripod and a remote release or camera timer to eliminate camera shake. Store the filter in a protective pouch when not in use to protect the glass and threads.