Circular polarising camera filter B+W 72E MRC, 72 mm, black

B+W 72E Circular Polarizer MRC, 72 mm, black is a circular polarising camera filter designed to reduce reflections, increase color saturation and improve contrast for photographic applications. The filter uses neutral gray polarizing material mounted in a slim black ring with a 72 mm thread, compatible with lenses that accept 72 mm filters. Multi-Resistant Coating (MRC) provides multiple anti-reflective layers and a hard, water- and dirt-repellent surface that eases cleaning and helps protect the optical glass.

Advantages

The circular polarizer reduces unwanted reflections from non-metallic surfaces such as water and glass and enhances sky and foliage saturation without affecting exposure metering or autofocus performance. The neutral gray polarizer material maintains accurate color balance while the high-quality optical glass preserves image sharpness. MRC improves longevity by resisting scratches and repelling moisture and grime.

Suitable for

• Landscape and nature photography to deepen skies and reduce haze
• Outdoor product and still-life photography to control glare on reflective surfaces
• Architectural and cityscape shots to minimise window and facade reflections
• General-purpose outdoor shooting where increased contrast and color saturation are desired

Key specifications

• Filter type: Circular polarizer
• Optical diameter: 72 mm thread size
• Finish: Black slim metal ring
• Coating: Multi-Resistant Coating (MRC) — multi-layer, water- and dirt-repellent
• Optical material: High-quality optical glass with neutral gray polarizer element
• Filter factor: approximately 2.3–2.8 depending on rotation and lighting
• Quantity: single filter

How to use

Screw the filter onto the front filter thread of a lens with a 72 mm diameter. Rotate the front ring while observing the viewfinder or live view to adjust the degree of polarization until the desired reduction of reflections and enhancement of color saturation is achieved. Meter and autofocus functions operate normally with circular polarizers, so standard exposure procedures can be used. Be aware that the filter reduces transmitted light; compensate exposure by the measured filter factor when precise exposure is required, especially in low light.

Usage recommendations

Use the filter mainly when shooting at a 90-degree angle to the sun for strongest sky darkening effects; avoid using it on ultra-wide lenses where uneven polarization across the frame can occur. Clean the glass with a soft microfiber cloth and mild cleaner; the MRC coating resists scratches and repels water but proper cleaning extends service life.