Neutral Density Variable Filter K&F 55mm FADER ND8–ND2000 (adjustable) SB6576

The Neutral Density Variable Filter K&F 55mm FADER ND8–ND2000 (adjustable) SB6576 is a screw-in optical filter designed for lenses with a 55mm front thread. It provides continuous attenuation from approximately 3 stops (ND8) up to about 11 stops (ND2000), enabling longer exposures, wider apertures and controlled motion blur in bright lighting. The filter uses multi-coated glass to reduce reflections and maintain color neutrality, allowing photographers and videographers to manage exposure without altering ISO or aperture settings dramatically.

Advantages

This K&F variable ND filter offers a broad and smoothly variable density range that replaces multiple fixed ND filters, saving space and enabling quick adjustments on location. The slim, threaded metal frame minimizes vignetting on wide-angle lenses and the multi-coating reduces flare and ghosting for cleaner images. The adjustable design allows precise control over light transmission, making it easier to achieve long exposures, softened water or cloud motion effects, and cinematic motion control in video.

Suitable for

• Landscape photography with long exposures
• Seascapes and waterfalls to create smooth water effects
• Outdoor portraiture to use wider apertures in bright light
• Time-lapse and motion-control video shooting
• On-location workflows where quick exposure changes are needed

Key specifications

• Filter thread diameter: 55 mm
• Variable density range: ND8 to ND2000 (approximately 3 to 11 stops)
• Optical material: multi-coated optical glass
• Mount material: slim metal threaded frame
• Function: continuous light attenuation for long exposures and aperture control

How to use

Attach the filter to a lens with a matching 55mm front thread by screwing it on until secure; avoid overtightening. Rotate the outer ring to adjust the density between ND8 and ND2000 while observing the exposure changes in the viewfinder or on the camera monitor. For very long exposures, use a tripod and enable mirror lockup or electronic shutter features to reduce vibration. When shooting video, make smooth and gradual adjustments to avoid abrupt exposure shifts.

Usage recommendations

When using the variable ND at stronger densities, check for cross-polarization artifacts (X-pattern) by testing different rotation positions and, if needed, reduce the maximum density or use a fixed ND for the darkest settings. Clean the glass with a lens-safe cloth and store the filter in its protective case when not in use to preserve coatings and threads.