We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Square 100mm neutral density filter, ultra-slim 2mm glass with nano coating

Sirui

Sirui SND0.9 (3 Stops) 100mm Ultra Slim S-Pro Nano MC Neutral Density Square Filter camera accessory

SKU CH-2QGV-RBG27

A 100mm square neutral density filter that cuts light by three stops for long exposures and wide apertures in bright conditions

  • 3-stop light reduction enables long exposures in bright daylight
  • Multi-coated glass maintains colour accuracy and cuts reflections
  • Ultra-slim 2 mm profile prevents vignetting on wide-angle lenses
  • Nano coating adds scratch resistance for durable field use
  • Fits 100 mm holders and works with lenses down to 16 mm

Bright-Day Long Exposure Tool

This 100mm square neutral density filter cuts three stops of light so you can use slow shutter speeds or wide apertures in full sun. It is built for landscape and creative photographers who want motion blur in water or clouds without over-exposure. The neutral tone keeps colours accurate while you extend exposure times.

Ultra-Slim 2mm Glass with Nano Coating

At just 2mm thick the filter sits flush in 100mm holders and prevents vignetting on lenses as wide as 16mm. Multi-coated glass reduces reflections and glare, while the nano layer resists scratches and repels water for reliable field use. The slim profile also allows stacking with other 100mm filters when needed.

Steps Up from Screw-In or Thicker Slabs

Photographers moving from circular screw-in ND filters gain a flat, holder-based workflow that works across thread sizes up to 82mm. The 2mm thickness removes the corner darkening common with deeper filters on ultra-wide glass. Buyers who need more than three stops of reduction or a variable-density option will need a different filter.

Highlights

  • 3-stop light reduction enables long exposures in bright daylight
  • Multi-coated glass maintains colour accuracy and cuts reflections
  • Ultra-slim 2 mm profile prevents vignetting on wide-angle lenses
  • Nano coating adds scratch resistance for durable field use
  • Fits 100 mm holders and works with lenses down to 16 mm

Specifications

No published specifications for this item yet.

Questions about this item

What does the 0.9 density rating mean for exposure?

The 0.9 rating equals a 3-stop reduction, letting you use shutter speeds eight times longer or apertures three stops wider in bright light.

Will the 2 mm thickness fit my existing 100 mm filter holder?

Yes, the ultra-slim 2 mm profile is designed for standard 100 mm square filter holders including Sirui and other brands.

How do I mount this square filter on a lens with an 82 mm thread?

Insert the filter into a compatible 100 mm holder, attach the holder's adapter ring to the 82 mm lens thread, then slide the filter into the holder's slot.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.