Neutral density camera filter B+W 806 MASTER, 77 mm, MRC coating

B+W 806 MASTER neutral density camera filter, 77 mm thread, with Multi Resistant Coating (MRC) reduces incoming light by six f-stops to enable longer exposures or wider apertures without changing colour balance. Constructed from finely ground and polished optical glass, this ND filter delivers uniform light attenuation across the visible spectrum and preserves image colour neutrality. The thin-film technology and multi-layer anti-reflective coating minimize reflections while an outer dirt- and water-repellent layer protects the glass and makes cleaning easier. The filter is designed for use with both digital and analog cameras and is intended for situations where control of exposure time and motion blur is required.

Advantages

The B+W 806 MASTER provides extreme light reduction (approximately six f-stops) in a single filter, allowing exposures to be extended significantly without altering depth of field. High-quality optical glass ensures no degradation of lens performance, while the multi-layer MRC system reduces reflections and maintains colour neutrality. The protective repellent outer layer resists dirt and water and simplifies maintenance, and the thin, optically consistent construction supports reliable image resolution across the frame.

Suitable for

• Landscape photography requiring long exposures to smooth water and cloud motion
• Long-exposure urban photography to remove moving people and traffic
• Portrait photography when a larger aperture is needed without changing exposure
• Creative motion-blur effects and light-trail capture

Key specifications

• Filter type: neutral density (ND) with approx. six f-stop attenuation
• Thread diameter: 77 mm
• Optical material: finely ground and polished special glass
• Coating: Multi Resistant Coating (multi-layer anti-reflective plus dirt/water-repellent outer layer)
• Coating layers: seven layers per side in the anti-reflective system
• Light attenuation: uniform across the visible spectrum for neutral colour rendering
• Construction: thin optically consistent filter pane to minimize vignetting on wide-angle lenses
• Recommended support: tripod required for long exposures

How to use

Attach the B+W 806 MASTER to a lens with a 77 mm filter thread and secure it by gently screwing until finger-tight. Compose and focus with the filter removed or use live view/manual focus if necessary; then replace the filter before making the exposure. Because the filter reduces light by approximately six stops, use a tripod and a cable release or camera timer to avoid camera shake. Meter or use exposure-referencing methods to adjust shutter speed for the desired motion blur or exposure length while maintaining aperture to preserve depth of field as needed.

Usage recommendations

For optimal results with the ND 806 MASTER, use a sturdy tripod and disable image stabilization if the camera or lens requires it when mounted on a tripod. Check focus and framing before fitting the filter, and consider making test exposures to confirm shutter speed adjustments. Clean the protective outer coating with a soft microfiber cloth and appropriate lens cleaner to maintain the repellent surface and optical performance.