Circular Polarizing Filter K&F Concept Nano-X MRC CPL 86 mm

The Circular Polarizing Filter K&F Concept Nano-X MRC CPL 86 mm is an optical accessory designed to reduce reflections from non-metallic surfaces, deepen color saturation and increase contrast in outdoor and landscape photography. The filter uses multi-resistant coated (MRC) glass to maintain high light transmission while resisting water, oil and smudges, and it fits lenses with an 86 mm front thread for compatibility with a range of wide-angle and telephoto lenses.

Advantages

The Nano-X MRC coating provides improved durability and easier cleaning compared with untreated glass, while preserving image sharpness and minimizing ghosting and flare. The circular polarizer removes or reduces unwanted reflections from water, glass and foliage, enhancing sky contrast and color definition without altering exposure settings significantly. Built with a low-profile metal frame, the filter is designed to minimize vignetting on wide-angle lenses and offers smooth rotation for precise polarization control.

Suitable for

• Landscape and nature photography to enhance skies and reduce haze
• Urban and architectural photography to cut reflections from windows and building surfaces
• Travel photography where reducing glare and improving color saturation is needed
• Outdoor product and food photography involving reflective surfaces

Key specifications

• Filter type: Circular polarizer (CPL)
• Filter diameter: 86 mm thread
• Glass: Multi-resistant coated optical glass (MRC)
• Frame: Low-profile metal mount designed to reduce vignetting
• Surface properties: Water- and oil-resistant coating for easier cleaning
• Operation: Rotating ring for adjustable polarization effect

How to use

Screw the filter gently onto the lens front with the camera turned off or lens cap on to avoid cross-threading. Rotate the outer ring while observing the viewfinder or live view until reflections are reduced and desired contrast or sky saturation is achieved. Monitor exposure and white balance as polarization can change light levels; use exposure compensation if necessary. When stacking filters, check for vignetting on wide-angle lenses and avoid excessive tightening to maintain smooth rotation.

Usage recommendations

For best results, use the CPL filter when the sun is at an angle to the scene rather than directly behind or in front of the camera. Clean the multi-resistant coated surface with a microfiber cloth and a small amount of lens cleaner to preserve coatings. Store the filter in its protective case when not in use and avoid touching the glass surface to maintain optical performance.