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 75 by 85 mm ND8 filter with 20-layer nano-coating

Urth

Urth 75x85mm Square ND8 3-Stop Lens Filter Plus+

SKU CH-MMXT-GPD3W

Reduces light by three stops using 75x85mm German B270 SCHOTT glass with 20-layer nano-coating

  • 3-stop reduction for wider apertures in bright light
  • 20-layer nano-coating repels water, oil and scratches
  • German B270 SCHOTT glass delivers zero colour cast
  • 75x85mm square format fits standard filter holders
  • Consistent light transmission curve ensures accurate exposure control

Square ND8 filter for exposure control

The Urth 75x85mm Square ND8 3-Stop Lens Filter Plus+ reduces light intake by three f-stops, allowing wider apertures or longer shutter speeds in bright conditions. It is designed for photographers and cinematographers who need precise exposure management for shallow depth of field or motion blur effects. The filter uses German B270 SCHOTT optical glass to maintain colour accuracy without introducing a colour cast. It suits professionals seeking reliable light reduction for creative control.

Physical limits of the square filter format

The 75x85mm dimensions require a compatible square filter holder system; it cannot be screwed directly onto a lens thread. Vignetting may occur when stacking multiple filters or using wide-angle lenses at their widest settings. The 3-stop density is fixed, so exposure adjustment requires swapping filters or changing camera settings. Users needing variable density or stronger reduction must carry additional filters.

Installation in a holder and common issues

Slide the filter into the designated slot of a 75x85mm holder and secure it against light leaks. The 20-layer nano-coating resists water, oil and scratches, making cleaning straightforward with a microfibre cloth. Dust or debris trapped between the filter and holder can cause flare or soft spots in images. Ensure the holder is mounted squarely to the lens adapter ring to prevent misalignment or the filter sliding out during use.

Highlights

  • 3-stop reduction for wider apertures in bright light
  • 20-layer nano-coating repels water, oil and scratches
  • German B270 SCHOTT glass delivers zero colour cast
  • 75x85mm square format fits standard filter holders
  • Consistent light transmission curve ensures accurate exposure control

Specifications

No published specifications for this item yet.

Questions about this item

Should I choose the 75x85mm square ND8 3-stop filter or a different density for my lens?

The 75x85mm square ND8 3-stop filter reduces light by exactly three f-stops; choose it when you need that specific reduction for wider apertures or longer exposures, and select a different ND density if your scene requires more or less light control.

What does the 3-stop reduction actually do when the filter is mounted on my camera?

A 3-stop reduction cuts incoming light to one-eighth, letting you open the aperture three stops wider or triple the shutter speed without over-exposure, ideal for shallow depth of field or motion blur in bright conditions.

How does the 20-layer nano-coating affect light transmission and durability?

The 20-layer nano-coating delivers a consistent transmission curve for accurate 3-stop reduction while repelling water, oil and scratches, making the German B270 SCHOTT glass easier to clean and more durable in the field.

Also in this aisle

People compared these

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