K&F 72mm 3-in-1 Hybrid Filter Fader ND2–32 + CPL + Black Diffusion 1/4 (72 mm)

The K&F 72mm 3-in-1 Hybrid Filter Fader ND2–32 + CPL + Black Diffusion 1/4 (72 mm) combines a variable neutral density fader, a circular polarizer and a mild black diffusion element in a single 72 mm filter. This hybrid design lets photographers and videographers control exposure, reduce glare and reflections from non-metallic surfaces, and soften highlights to achieve smoother skin tones and more pleasing highlights in both stills and motion work. The variable ND provides continuous attenuation from approximately 1 to 5 stops, the CPL helps increase color saturation and contrast by cutting reflected light, and the Black Diffusion 1/4 reduces micro-contrast to create a subtle bloom effect without heavy softness.

Advantages

The integrated construction eliminates the need to stack multiple separate filters, saving setup time and avoiding vignetting on wide-angle lenses. Combining ND, CPL and diffusion into one unit reduces lens flare and internal reflections associated with multiple threaded elements. The filter is designed for consistent optical alignment so the polarizer can be rotated independently of the ND fader, allowing precise control over polarization and exposure simultaneously. Materials and coatings are selected to maintain image sharpness while delivering the intended exposure reduction and diffusion characteristics.

Suitable for

• Landscape photography and long exposures where controlled light reduction and reflection control are needed
• Portrait and beauty work requiring subtle diffusion to soften skin highlights
• Video production where smooth exposure transitions and reduced reflections are important
• Outdoor and architectural photography to manage glare from water, glass and foliage

Key specifications

• Filter diameter: 72 mm
• Variable neutral density range: approximately ND2 to ND32 (about 1–5 stops)
• Polarizer type: circular polarizer (CPL) with rotatable ring
• Diffusion strength: Black Diffusion 1/4 (mild diffusion)
• Construction: combined single-unit design integrating ND, CPL and diffusion
• Intended use: photography and video for exposure control, reflection reduction and highlight softening

How to use

Mount the filter on a lens with a 72 mm thread and ensure it is properly seated. Rotate the polarizer ring to reduce reflections and adjust color saturation; observe changes in a live view or through the viewfinder to set the desired polarization. Use the ND fader control to reduce light level gradually until the required shutter speed or aperture is achieved. When using the diffusion element for portraits or close-ups, check results on camera and fine-tune ND and CPL settings to balance exposure and the amount of highlight softening. For video, make slow adjustments to the fader to avoid abrupt exposure shifts.

Usage recommendations

Use the CPL primarily to control reflections from non-metallic surfaces and to increase color depth. When combined with the ND fader for long exposures, monitor the scene for color shifts and adjust white balance or post-processing as needed. For minimal vignetting on wide-angle lenses, avoid stacking additional filters; if stacking is necessary, verify corner performance at the widest focal length. Clean the filter surfaces with a microfiber cloth before use to preserve image quality.