Camera Filter K&F Concept 2-in-1 CPL Polarizer + Variable ND2–ND32 Fader 67mm

The K&F Concept 2-in-1 CPL Polarizer + Variable ND2–ND32 Fader 67mm is a hybrid camera filter that combines a circular polarizer and an adjustable neutral density element in a single 67mm threaded unit. The CPL function reduces reflections on non-metallic surfaces and increases color saturation, while the variable ND fader provides continuously adjustable light reduction from approximately 1 to 5 stops (ND2–ND32). This combination allows photographers to control glare, deepen skies, balance exposures and extend shutter times without changing filters during a shoot.

Advantages

This 2-in-1 filter saves time and attachment swaps by integrating polarization and variable density into one compact accessory compatible with lenses that accept 67mm threads. The circular polarizer improves contrast and color fidelity in landscape and architecture scenes, and the variable ND fader lets you fine-tune exposure for motion blur, long exposures and shallow depth-of-field in bright conditions. The combined design reduces the need for stacking separate filters, lowering the risk of vignetting on wide-angle lenses and simplifying field workflow.

Suitable for

• Landscape photography to deepen skies and enhance foliage color
• Architectural photography to reduce window and facade reflections
• Motion blur and long-exposure photography for smoothing water and clouds
• Video shooting to control exposure and achieve cinematic motion at wider apertures
• Outdoor portraits when managing harsh highlights and achieving shallow depth-of-field

Key specifications

• Filter type: Circular polarizer combined with variable neutral density (hybrid 2-in-1)
• Variable ND range: ND2 to ND32 (approx. 1 to 5 stops of attenuation)
• Thread size: 67 mm
• Optical construction: multi-coated glass elements for improved light transmission and reduced flare
• Mount: rotatable front element for polarization control with graduated rotation for ND adjustment
• Intended use: color saturation enhancement, reflection reduction and adjustable light attenuation

How to use

Screw the filter onto a lens with a 67mm front thread. First rotate the CPL element to achieve the desired reduction in reflections and color enhancement; observe changes in sky contrast and reflections in water or glass as you rotate. Then rotate the variable ND control to set the required amount of light attenuation for the exposure or motion effect you want. Check the viewfinder or live view histogram to avoid underexposure or unwanted color shifts at higher ND settings. When composing wide-angle shots, monitor for vignetting and adjust composition or reduce stacked accessories if necessary.

Usage recommendations

Use the polarizer primarily at 90 degrees to the sun for strongest sky darkening and color boost. Avoid extreme ND settings when using autofocus systems or cameras prone to color cast under heavy filtration; test exposure and white balance before critical takes. Remove the filter when not needed to prevent unnecessary light loss and keep protective caps on to preserve multi-coatings and glass surfaces.