Neutral density camera filter B&W 803 Master, 5.8 cm, Multi Resistant Coating (MRC)

The B&W 803 Master neutral density (ND) camera filter with a 5.8 cm diameter and Multi Resistant Coating (MRC) reduces incoming light by three f-stops while maintaining color neutrality and high optical quality. Made from finely ground and polished special optical glass, the filter preserves the resolving power and image characteristics of high-quality lenses. Thin-film technology and a multi-layer anti-reflective coating ensure uniform light attenuation across the visible spectrum and minimize reflections. The outermost coating provides dirt and water repellency for easier cleaning and longer service life.

Advantages

This ND filter offers precise light reduction without shifting color balance, enabling longer exposures or wider apertures in bright conditions. The high-quality glass base avoids degrading lens performance. Multi-layer anti-reflective coatings on both sides reduce flare and ghosting, while the outer dirt- and water-repellent layer simplifies maintenance. The filter construction delivers consistent, even attenuation across the frame for neutral image results, and its three-stop density is well suited to both photography and video use where aperture or shutter options are limited.

Suitable for

• Landscape photography with long exposures to smooth water and clouds
• Creating motion blur in waterfalls, rivers and urban scenes
• Video shooting in bright conditions where aperture control is limited
• Portraits or shallow depth-of-field work requiring wider apertures in daylight

Key specifications

• Optical element: finely ground and polished special glass for high image quality
• Diameter: 5.8 cm
• Light reduction: 3 f-stops (ND0.9)
• Coating: Multi Resistant Coating (MRC) with multi-layer anti-reflective system
• Surface finish: outer dirt- and water-repellent layer for easier cleaning
• Color neutrality: uniform attenuation across the visible spectrum

How to use

Attach the B&W 803 Master ND filter securely to a compatible lens with a 5.8 cm filter thread or holder. Compose and focus before applying the filter when using very long exposures, then set the desired shutter speed and aperture. For video, mount the filter when the camera is configured for the intended exposure settings to maintain natural motion blur and depth of field. Clean the filter with a soft microfiber cloth and appropriate lens cleaner, taking care to remove grit before wiping to avoid scratches.

Usage recommendations

For optimal results, meter the scene with the filter in place or use exposure compensation to account for the three-stop reduction. Use a tripod for long-exposure photography to avoid camera shake. When stacking filters, be aware of potential vignetting on wide-angle lenses; test combinations beforehand. Store the filter in its protective case when not in use to preserve the MRC outer layer and prevent contamination.