Neutral density camera filter B&W 810 Master, 43 mm, Multi Resistant Coating (MRC)

B&W 810 Master is a 43 mm neutral density (ND) camera filter with Multi Resistant Coating (MRC) designed to reduce the amount of light entering the lens while maintaining neutral colour balance. Made from finely ground and polished special optical glass, the filter preserves the optical quality of high-end lenses and enables significantly longer exposures or wider apertures in bright conditions. The thin‑film coating package combines a true ND attenuation layer with a multi‑layer anti‑reflective system and an outer dirt‑ and water‑repellent surface, resulting in uniform light reduction across the visible spectrum and easy maintenance of the glass surface.

Advantages

The B&W 810 Master provides ten stops of light reduction for pronounced long‑exposure effects such as silky water, softened moving subjects and continuous light trails, while keeping colours neutral. The high optical quality glass minimizes any impact on image sharpness, and the multi‑layer anti‑reflective coating reduces internal reflections. The outer repellent layer protects the filter from dirt and moisture and simplifies cleaning, making the filter suitable for outdoor and on‑location use.

Suitable for

• Landscape photography requiring long exposures to smooth water and clouds
• Urban and street scenes where motion blur removes or abstracts people and vehicles
• Portraits that need shallow depth of field in bright light by allowing wider apertures
• Creative long‑exposure effects such as light trails, wipe effects and intentional motion blur

Key specifications

• Filter type: neutral density (ND) with strong attenuation
• Light reduction: 10 f‑stops
• Diameter: 43 mm (screw‑in)
• Optical material: finely ground and polished special glass
• Coating: Multi Resistant Coating (MRC) with multi‑layer anti‑reflective system and dirt/water‑repellent outer layer
• Uniform attenuation across the visible spectrum for neutral colour rendering
• Intended use: compatible with analogue and digital camera lenses of matching thread size

How to use

Screw the 43 mm filter onto the front thread of a lens with matching diameter until it seats securely; avoid cross‑threading. Compose and meter the scene with the filter on the lens because the ten‑stop reduction will affect exposure settings. Use a tripod and a remote release or self‑timer for exposures of several seconds to minutes to prevent camera shake. When shooting handheld for smaller exposures, increase ISO or use wider apertures but take care to preserve image quality. After finishing, store the filter in its case to protect the coated surfaces.

Usage recommendations

For very long exposures, use a sturdy tripod and mirror‑lockup or electronic front‑curtain shutter if available; check focus and framing before attaching the filter or use live view focus. Clean the filter gently with a microfiber cloth and appropriate blower or lens solution if needed. Avoid extreme temperature changes that may cause condensation on the glass.