B+W Master Neutral Density 810M 82mm 10-Stop Filter

B+W Master Neutral Density 810M is a fixed 10-stop neutral-density filter for lenses with an 82mm filter thread. Its strong light reduction is aimed at long-exposure effects such as smoothing moving water, but the listing says a stable tripod is essential for exposures that may reach one minute.

At a glance

10-stop light reduction is intended for bright conditions and long exposures, including motion blur in water or people.
The listing describes finely polished optical glass and an MRC Nano coating intended to repel dirt and water.
A thin-profile, knurled mount is claimed to improve grip.
The listing claims use down to 17mm on full-frame format.

Price

$130.90Save 15%

Reference price: ~~$153.95~~

Price checked: Nov 14, 2026

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Pros and cons

Pros

Ten stops of fixed density can enable long exposures or wider-aperture shooting when available light is bright.
An 82mm thread suits cameras and lenses with a matching filter thread.
The claimed thin knurled mount focuses on grip while keeping the profile slim.

Technical specifications

11 specifications

Identity and fit
Brand	B+W
Model	Master Neutral Density 810M
Filter effect	Neutral Density
Thread size	8.2 centimeters
Compatible devices	Cameras with 82mm filter thread

Optics and construction
Filter factor	1024 x
Material	Brass, Optical Glass
Coating	Nano Coating
Water resistance listed	Water Resistant

Dimensions and installation
Dimensions listed	3.23"L x 3.23"W
Weight listed	82 g

What to know before buying

The listing calls this an 82mm, 10-stop filter, but its technical fields also give the thread and filter size as “8.2 centimeters” and include an unrelated “screen size” entry. Confirm the physical filter-thread fit before purchase. A stable tripod is specified as essential for the cited very long exposures. The one-year manufacturer warranty and QR-code authenticity check are listing claims.

Who is it for?

A good fit for

Landscape photographers seeking a fixed 10-stop filter for smoothing moving water or creating motion blur in bright conditions.
Owners of lenses with an 82mm filter thread who want to reduce light for long exposures or a specific shallow depth of field.

Less suited to

Photographers whose lenses do not accept an 82mm filter and who do not have a suitable adapter.
Buyers who need variable density or a lighter reduction than the fixed 10-stop effect.

B+W Master Neutral Density 810M 82mm 10-Stop Filter · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.1 / 5 · 12 ratings

5 stars59%59%
4 stars27%27%
3 stars0%0%
2 stars0%0%
1 star14%14%

Aggregate ratings are more favorable than unfavorable overall, but a portion of ratings are at the lowest star level. With no written feedback supplied, those figures do not explain why customers rated it as they did or establish specific strengths or defects. Buyers should weigh that limited feedback separately from the stated 10-stop, 82mm filter specifications and their own fit requirements.

Frequently asked questions

What does the 10-stop rating mean for use?

The listing describes the filter as darkening the subject area by ten f-stops. It is intended for bright conditions and effects such as blurred movement or smooth-looking water.

Will it fit my lens?

The product is identified as an 82mm filter for cameras with an 82mm filter thread. Because other listing fields express the size as 8.2 centimeters, confirm your lens thread and the selected listing details before ordering.

Do I need a tripod?

The product description says a stable tripod is essential for the very long exposures it discusses, which can reach one minute.