Neutral Density Variable Filter K&F 82mm Fader Gray ND2–ND400 adjustable

The K&F 82mm Fader Gray ND2–ND400 variable neutral density filter reduces light entering the lens across a wide adjustable range to enable longer exposures, wider apertures and controlled motion blur. Designed for 82mm thread lenses, this variable ND filter provides continuous attenuation from approximately 1 to 9 stops, allowing photographers and videographers to fine-tune exposure without changing filters. The filter preserves tonal neutrality for natural-looking color and contrast in landscape, long-exposure, and video work.

Advantages

The Fader Gray variable ND offers smooth, stepless light reduction in a single compact glass element that eliminates the need to carry multiple fixed-strength filters. Its adjustable range covers low to very strong attenuation needs, so you can shift from subtle exposure control to dramatic long exposures quickly. The optical surface is designed to maintain color fidelity and contrast while minimizing vignetting on full-frame and crop-sensor systems when used correctly. Built for practical field use, the filter mounts on lenses with 82mm threads and allows rapid changes to exposure settings without interrupting a shoot.

Suitable for

• Landscape photography requiring slower shutter speeds
• Long-exposure scenes such as waterfalls, rivers, and clouds
• Video production to control exposure and motion blur
• Portraits and shallow-depth-of-field work in bright light
• On-location shooting where carrying multiple filters is impractical

Key specifications

• Filter type: Variable neutral density (variable ND)
• Thread diameter: 82 mm
• Light reduction range: approximately ND2 to ND400 (about 1 to 9 stops)
• Optical construction: multi-element coated glass designed for neutral color transmission
• Mount: screw-in metal frame compatible with 82mm lens threads

How to use

Screw the filter onto a lens with an 82mm thread until it is secure but not overtightened. Rotate the front element to set the desired density while observing exposure changes through the camera or using a light meter. For long exposures, set a low ISO and a small aperture as required, then rotate the filter to increase attenuation until the correct shutter speed is reached. When using wide-angle lenses, check for vignetting and adjust framing or reduce density if needed. For video, make gradual adjustments to avoid abrupt exposure shifts in the recording.

Usage recommendations

Avoid stacking multiple filters with the variable ND to prevent excessive vignetting and uneven exposure. When using the highest attenuation settings, watch for cross-polarization effects or X-patterns; slightly rotating the filter or using lower density may reduce this. Clean the filter surfaces with a soft microfiber cloth and appropriate lens cleaning solution, and store it in a protective case when not in use.