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Haida Greystone 40.5mm ND 1.8 filter with multi-coated glass and thin aluminum ring

Haida

Haida Greystone 40.5mm ND 1.8 Filter 64x #HD4778-40.5

SKU CH-9ZQM-05S8R

A 40.5 mm neutral-density filter with 1.8 density and 64× factor for six-stop exposure control

  • 6-stop exposure reduction with 64x filter factor
  • 8 density enables wider apertures and slower shutter speeds
  • Premium optical glass delivers exceptional clarity and color fidelity
  • Multi-coated surface prevents ghosting and internal reflections
  • Lightweight aluminum-alloy ring minimizes vignetting on wide angles

What this filter is and who uses it

The Haida Greystone ND 1.8 is a 6-stop neutral density filter built for photographers who need to extend exposure times or open apertures in bright conditions. Its 64x filter factor and multi-coated optical glass suit landscape, architecture and long-exposure work where precise light control matters. The slim 40.5 mm aluminium ring fits directly on compatible lens threads.

The specification that decides fit

The filter mounts on any lens with a 40.5 mm front thread, identified by the HD4778-40.5 part code. If your lens uses a different thread diameter this filter will not attach without a step-up or step-down ring, which is not included.

Capacity and headroom

A 6-stop reduction lets you use shutter speeds seconds or minutes long for smooth water or motion blur while keeping the aperture wide for shallow depth of field. The 1.8 density handles strong daylight comfortably, but extremely bright scenes such as snow or direct sun may require an additional stop beyond what this single filter provides.

Highlights

  • 6-stop exposure reduction with 64x filter factor
  • 8 density enables wider apertures and slower shutter speeds
  • Premium optical glass delivers exceptional clarity and color fidelity
  • Multi-coated surface prevents ghosting and internal reflections
  • Lightweight aluminum-alloy ring minimizes vignetting on wide angles

Specifications

No published specifications for this item yet.

Questions about this item

What does the 6-stop exposure reduction mean when I am shooting with this filter?

A 6-stop reduction lets you open the aperture six steps wider or slow the shutter speed by the same amount, so you can blur motion or isolate subjects even in bright daylight.

What does the 1.8 density rating tell me about light transmission?

The 1.8 optical density corresponds to a 64× filter factor, meaning only 1/64 of the incoming light reaches the sensor.

Will the 40.5 mm thread size fit my lens and still allow a lens cap or another filter on top?

The filter screws onto any 40.5 mm front thread and has its own front threads so you can stack another filter or use a 40.5 mm cap.

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