Neutral density camera filter B+W 806 MASTER, 49 mm, Multi Resistant Coating (MRC)

The B+W 806 MASTER neutral density camera filter (49 mm) reduces incoming light by six f-stops, allowing longer exposures or wider apertures without altering depth of field. Constructed from finely ground and polished special optical glass, this ND filter delivers uniform light attenuation across the visible spectrum for color-neutral results. The Multi Resistant Coating (MRC) combines a multi-layer anti-reflective system with an outer dirt- and water-repellent layer to minimise reflections, resist scratches and simplify cleaning. This single-piece 49 mm filter is suitable for both digital and analog lenses and is intended for use with a tripod when long exposures are required.

Advantages

The filter achieves extreme light reduction (six f-stops) while preserving image neutrality and optical quality, avoiding degradation of high-quality lenses. Its thin-film coating technology integrates seven anti-reflective layers per side to reduce reflections and ghosting. The final protective layer provides water and dirt repellency, improving maintenance and longevity. The uniform attenuation across the visible range produces reliable color balance and predictable exposure control for long-exposure and wide-aperture photography.

Suitable for

• Long-exposure landscape photography (softened water, cloud motion)
• Architectural and urban scenes requiring motion smoothing or empty-street effects
• Portraits where wider apertures are desired without overexposure
• Creative light-trail and wipe-effect photography
• Analog and digital cameras with a 49 mm filter thread

Key specifications

• Filter type: Neutral density (ND) reducing light by 6 f-stops
• Optical glass: finely ground and polished special glass
• Filter diameter: 49 mm (screw-in)
• Coating: Multi Resistant Coating (MRC) with multi-layer anti-reflective system
• Number of anti-reflective layers: 7 per side
• Finish: outer dirt- and water-repellent protective layer
• Optical performance: uniform attenuation and color-neutral rendering
• Recommended support: tripod for long exposures

How to use

Screw the 49 mm B+W 806 MASTER ND filter securely onto a lens with a matching thread size. Compose and focus with the filter attached or, if necessary, focus before attaching and then switch to manual focus. When using the filter for long exposures, mount the camera on a tripod and use a remote release or self-timer to avoid camera shake. Adjust exposure time according to the 6-stop reduction: for example, 1/60 s becomes approximately 1 s. Check white balance and, if required, use custom or post-processing corrections to ensure color accuracy.

Usage recommendations

Use this ND filter when you need predictable, large reductions in light for exposures that require multi-second shutter times or when you prefer wider apertures in bright conditions. Always stabilise the camera on a tripod, verify focus before long exposures, and keep the filter clean to maintain optimal anti-reflective performance.