Circular Polarizing Filter b&w international B+W BASIC CPL MRC 46mm

B+W BASIC CPL MRC 46mm is a circular polarizing filter designed to reduce reflections, suppress glare and increase color saturation and contrast in photographic images. The filter screws onto lenses with a 46mm front thread and uses a circular polarizer element to selectively block polarized light, making skies appear deeper and reducing reflections from non-metallic surfaces. A multi-resistant coating (MRC) on the glass improves light transmission and provides additional protection against fingerprints and moisture.

Advantages

The filter provides consistent polarization control while maintaining image sharpness and color fidelity. Its 46mm screw mount ensures compatibility with lenses that have the same thread size. The MRC coating minimizes internal reflections and ghosting, and adds a durable surface treatment that eases cleaning and resists environmental contamination. The compact, lightweight construction is suitable for handheld and tripod photography without significantly altering lens balance.

Suitable for

• Landscape photography to enhance sky contrast and color saturation
• Outdoor portrait work to reduce glare on skin and eyes
• Architectural and product photography to manage reflections on glass and water
• Travel and general photography when controlling reflections is important

Key specifications

• Filter type: circular polarizer (CPL)
• Filter diameter: 46 mm (threaded mount)
• Optical coating: multi-resistant coating (MRC) for reduced reflections and easier cleaning
• Mount material: metal threaded ring for secure attachment
• Effect: reduces polarized light to increase contrast and color saturation

How to use

Attach the filter to the lens front by screwing it into the 46mm thread until it is secure but not overtightened. Rotate the front element to adjust the degree of polarization while observing changes through the viewfinder or on the camera monitor. For maximum sky darkening, position the lens roughly 90 degrees to the sun. Use live view or test exposures to confirm the desired effect and avoid uneven polarization with wide-angle lenses when close to the sun.

Usage recommendations

Clean the filter surface with a soft microfiber cloth and blower before use to avoid introducing dust or scratches. Store the filter in a protective case when not in use and avoid excessive tightening to preserve the threads and coating. Be mindful that polarizing effects are less pronounced at very wide angles and with some lens types; check results on your camera and adjust framing or remove the filter when necessary.