Hybrid Filter K&F Concept 2-in-1 CPL + Full Grey ND2–ND32 for 49 mm lenses

The K&F Concept Hybrid 2-in-1 CPL + Full Grey ND2–ND32 for 49 mm lenses integrates a circular polarizer and a solid neutral density filter into a single threaded unit compatible with 49 mm lens threads. The circular polarizer (CPL) component reduces surface reflections from water, glass, and foliage while increasing color saturation and contrast. The solid neutral density (ND) element provides a selectable light reduction range from ND2 to ND32, allowing for longer exposures or wider apertures without overexposure. The combined design saves time on location by eliminating the need to stack separate CPL and ND filters and keeps front lens elements protected during outdoor photography.

Advantages

The hybrid design offers the functionality of two filters in one compact accessory, reducing weight and the risk of vignetting that can occur when stacking filters. The CPL rotates independently to control polarization while the ND section supplies stepped density stops for flexible exposure control. High optical quality glass and multi-coating minimize flare and ghosting while preserving image sharpness. The metal threaded frame provides reliable mounting and consistent alignment with 49 mm lens threads.

Suitable for

• Landscape photography to enhance sky contrast and reduce reflections
• Long-exposure photography for smoothing water and motion blur in daylight
• Outdoor portrait and travel photography requiring wider apertures in bright conditions
• Architectural and product photography where reflections must be controlled

Key specifications

• Filter type: Combined circular polarizer (CPL) + solid neutral density (ND)
• Density range: ND2 to ND32 (equivalent to 1 to 5 stops of light reduction)
• Thread size: 49 mm
• Optical material: Multi-coated optical glass
• Mount material: Metal threaded frame

How to use

Mount the filter onto a lens with a 49 mm front thread and rotate the CPL ring to adjust the degree of polarization until unwanted reflections are reduced and color saturation meets your needs. Select the ND density stop appropriate for the exposure change you require; the filter delivers stepped reductions from ND2 through ND32 to lengthen shutter speeds or permit wider apertures. Check exposure and histogram while making adjustments and use a tripod for long-exposure shots to maintain sharpness.

Usage recommendations

For best results, compose and focus with the filter on, then switch to manual focus if necessary to avoid focus hunting. Use live view to preview long exposures and bracket exposures when working in mixed lighting. Clean the filter surfaces with a microfiber cloth and appropriate cleaner before shooting to prevent artifacts. When not in use, store the filter in a protective case to avoid scratches and dust.