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100mm square neutral density filter, ultra-slim 2.0mm Schott B270 glass, nano multi-coating

Sirui

Sirui SND1.2 4 Stops 100mm Ultra Slim S-Pro Nano MC ND Square Filter

SKU CH-MEZ1-Y0XC2

A 100mm square neutral density filter reducing exposure by four stops using 2.0mm Schott B270 glass with multi-layer coating for uniform light reduction and accurate colour

  • 4-stop reduction for long daylight exposures
  • Schott B270 glass with nano multi-coating for neutral colour
  • 0 mm ultra-slim profile fits 100 mm holders
  • Linear edge-to-edge density prevents vignetting on 16 mm lenses
  • Compatible with Sirui holder up to 82 mm threads

Light Control for Long Exposures

The Sirui SND1.2 is a 100mm square neutral density filter that reduces exposure by four stops with a filter factor of 10. It lets photographers use slower shutter speeds or wider apertures in bright conditions to capture motion blur in water or clouds without over-exposing the frame. The filter maintains colour fidelity across the image and can be stacked with other filters for combined effects.

Optical Clarity and Transmission

Constructed from German-manufactured Schott B270 glass measuring 2.0mm thick, the filter features an exclusive multi-layer anti-reflective coating. This coating ensures perfectly linear, uniform light reduction from edge to edge with high light transmission capability. The glass and coating work together to deliver precise colour rendition without introducing colour casts or contrast loss during extended exposures.

Slim Profile for Wide-Angle Compatibility

The ultra-slim 2.0mm design prevents vignetting when used with wide-angle lenses on full-frame cameras. It fits the Sirui SUNDH01 holder and other 100mm filter holders, supporting lenses as wide as 16mm and filter diameters up to 82mm. The square format slides into the holder securely, allowing quick insertion or removal when light conditions change during a shoot.

Highlights

  • 4-stop reduction for long daylight exposures
  • Schott B270 glass with nano multi-coating for neutral colour
  • 0 mm ultra-slim profile fits 100 mm holders
  • Linear edge-to-edge density prevents vignetting on 16 mm lenses
  • Compatible with Sirui holder up to 82 mm threads

Specifications

No published specifications for this item yet.

Questions about this item

How do I install this 100mm square ND filter and what step is often missed?

Slide the filter into the 100mm holder slot with the coated side facing the lens; the step often missed is seating the 2.0mm glass fully home so no light leaks around the edges.

What maintenance or replacement will this Schott B270 glass filter need later?

Clean the nano multi-coating with a microfibre cloth and blower; replace only if the 2.0mm plate chips or the coating degrades from repeated cleaning.

What limit appears first during a long exposure with this 4-stop ND1.2 filter?

The 1000x filter factor caps usable shutter speeds; beyond that, heat buildup on the 100mm Schott B270 plate can introduce thermal noise before colour shift occurs.

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