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B+W 58mm Master 803M ND 0.9 neutral density filter, slim black ring, clear glass

B + W Filter Company

B + W 58mm Master 803M ND 0.9 3-Stop MRC Nano Neutral Density Filter

SKU CH-ESS0-YRJKB

A 58mm neutral-density filter cutting light by three stops for wider apertures or longer exposures, with multi-layer anti-reflective coating and water-repellent glass made in Germany

  • Cuts light by three stops for wider apertures in bright sun
  • 58 mm thread fits lenses with that diameter directly
  • Multi-layer anti-reflective coating on both sides reduces flare
  • Water- and dirt-repellent outer surface eases cleaning in the field
  • Made in Germany from precision-ground optical glass

What this filter does

The B + W 58mm Master 803M ND 0.9 reduces light entering the lens by three f-stops, allowing wider apertures or slower shutter speeds in bright conditions. It suits professional photographers and videographers who need precise exposure control for portraiture, long-exposure water effects or motion-blur techniques. The neutral density factor of .9 maintains colour fidelity while extending creative possibilities. Works with both analogue and digital cameras.

Compatibility check

Verify that your lens accepts 58mm screw-in filters before ordering. The filter mounts directly to the front thread, so confirm the diameter printed on the lens barrel or cap. Ensure there is enough clearance for the filter frame when a hood or cap is also fitted. No adapter rings are included, so the thread must match exactly.

Build and daily use

Crafted in Germany from finely ground and polished special glass with a seven-layer multi-resistant coating per side to suppress reflections. The outer MRC Nano layer repels water and dirt, making the surface easier to clean in the field. The slim brass mount resists jamming and allows smooth attachment and removal even with cold or damp fingers. Designed to withstand regular professional handling without degrading optical performance.

Highlights

  • Cuts light by three stops for wider apertures in bright sun
  • 58 mm thread fits lenses with that diameter directly
  • Multi-layer anti-reflective coating on both sides reduces flare
  • Water- and dirt-repellent outer surface eases cleaning in the field
  • Made in Germany from precision-ground optical glass

Specifications

No published specifications for this item yet.

Questions about this item

Does the 58mm Master 803M ND 0.9 filter include a protective case or cleaning cloth, or must those be purchased separately?

The supplied facts list only the filter itself. No case, pouch, or cleaning cloth is mentioned, so assume they are not included and buy them separately if required.

The title shows 0.9 density and 3-stop reduction — are these two different versions or the same filter?

They describe the same filter. An ND 0.9 rating equals a three f-stop light reduction, so there is only one version to choose.

When the 0.9 density is on a lens, what shutter-speed change should I expect in daylight?

It cuts the light by three f-stops, letting you use a shutter speed eight times longer or an aperture three stops wider than without the filter.

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