Neutral density camera filter B&W 810 MASTER 77 mm, Multi Resistant Coating (MRC)

B&W 810 MASTER neutral density camera filter, 77 mm thread, reduces incoming light by ten f-stops to enable long exposures or wider apertures in bright conditions. The filter is made from finely ground, polished optical glass to preserve image sharpness and lens performance. Multi Resistant Coating (MRC) combines a multi-layer anti-reflective system with a dirt- and water-repellent outer layer, reducing reflections, ensuring uniform light attenuation across the visible spectrum and making the filter easier to clean and maintain. Supplied as a single ND800 filter, it is intended for landscape, long‑exposure and motion‑blur photography that requires significant light reduction.

Advantages

The ten‑stop light reduction allows dramatic extension of exposure times so moving water appears smooth and mist‑like and moving people or vehicles become blurred or disappear from long exposures. High-quality optical glass maintains image sharpness and color neutrality, while the MRC thin-film coating minimizes reflections and flare. The outer hydrophobic layer repels dirt and moisture for easier cleaning and longer service life. The slim construction and precise 77 mm screw thread ensure secure attachment to compatible lenses without introducing mechanical vignetting on standard focal lengths.

Suitable for

• Long-exposure landscape photography (waterfalls, rivers, coastal scenes)
• Urban long exposures to remove crowds and create light trails
• Motion blur effects for creative photography
• Portraiture when using wider apertures in bright light
• Time-based artistic effects where up to ten stops of light reduction are required

Key specifications

• Filter type: Neutral Density (ND800), 10‑stop light reduction
• Thread size: 77 mm
• Optical material: finely ground and polished special optical glass
• Coating: Multi Resistant Coating (MRC) with multi-layer anti-reflective system (7 layers per side) and outer dirt-/water-repellent layer
• Light attenuation: uniform across the visible spectrum for neutral color rendering
• Applications: suitable for analog and digital cameras

How to use

Mount the filter securely on a lens with a 77 mm thread. Because this filter reduces light by ten stops, use a stable tripod and set the camera to manual exposure or bulb mode to control long exposure times. Compose and focus before attaching the filter when possible, or use Live View for focusing after attachment. Select low ISO values and appropriate aperture settings; use remote release or camera app control and cover the viewfinder to avoid stray light. Disable in-camera long-exposure noise reduction if preferred and shoot RAW for maximum post-processing latitude.

Usage recommendations

Do not use this filter for direct visual observation of the sun; it does not block UV or IR radiation and can cause eye injury. For solar viewing use dedicated solar filters. For best long-exposure results: use a tripod, remote shutter control or cable release, set exposure manually, use Live View, and consider the B+W ND Calculator App to determine correct exposure times. Protect the filter from strong shocks and clean only with appropriate optical cleaning materials to preserve the MRC surface.