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Square glass filter with thin metal frame, neutral grey tint

Urth

Urth 100x100mm Square ND16 4-Stop Lens Filter Plus+

SKU CH-6G1W-QXGM0

A 100 mm square ND16 filter cuts four stops of light for long exposures and wider apertures, using German B270 SCHOTT glass with 20 nano-coating layers

  • 4-stop light reduction enables longer exposures in bright conditions
  • German B270 SCHOTT glass delivers true colour without cast
  • 20-layer nano-coating resists water oil and scratches
  • 100x100mm square format fits standard filter holders
  • Consistent transmission curve ensures accurate density across the frame

Professional ND16 Square Filter Plus+

The Urth 100x100mm Square ND16 4-Stop Lens Filter Plus+ reduces incoming light by four f-stops. It is built for photographers and cinematographers who need precise exposure control during long-exposure or shallow-depth-of-field work in low-light conditions. German B270 SCHOTT optical glass provides the optical foundation.

Four-stop reduction defines usable shutter range

A 16× transmission factor limits the filter to scenes where a four-stop reduction matches creative intent. The 20-layer nano-coating maintains a consistent transmission curve across the frame, minimising colour shift while repelling water, oil and scratches. Square 100mm format fits standard filter holders without vignetting on most wide-angle lenses.

Confirm holder compatibility and front-thread size

Verify that your filter holder accepts 100x100mm square filters before ordering. Check the lens front diameter to select the correct adapter ring for the holder system. Ensure the combined stack thickness does not exceed the holder’s slot depth, especially when stacking multiple filters.

Highlights

  • 4-stop light reduction enables longer exposures in bright conditions
  • German B270 SCHOTT glass delivers true colour without cast
  • 20-layer nano-coating resists water oil and scratches
  • 100x100mm square format fits standard filter holders
  • Consistent transmission curve ensures accurate density across the frame

Specifications

No published specifications for this item yet.

Questions about this item

Should I choose the ND16 4-stop version or a different density for low-light long exposures?

The ND16 cuts four f-stops, ideal for extending shutter speeds or opening the aperture in low light without overexposure.

What does the 4-stop reduction actually do when the filter is on the lens?

It lets you use shutter speeds sixteen times longer or apertures four stops wider while keeping the same exposure.

Does the 100x100mm square format fit standard filter holders and vignette on wide angles?

The 100mm square matches standard holders; vignetting depends on your specific lens and holder combination.

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