Sirui 100 x 150 mm 4-stop reverse GND filter
Balances bright skies and dark landscapes with a 4-stop reverse GND in a 100 x 150 mm, 2 mm Schott glass filter
- Balanced exposures at sunrise with 4-stop reverse GND
- Sharp images through German Schott B270 glass
- Minimal reflections via multi-coated nano layers
- Fits 100 mm holders on lenses from 16 mm
- Scratch-resistant 2 mm thickness protects glass
100 × 150 mm Reverse GND Filter
The Sirui rectangular graduated neutral-density filter measures 100 by 150 mm and delivers a 4-stop reverse transition. It is built for landscape and seascape photographers who need balanced exposure when the brightest band of light sits at the horizon during sunrise or sunset. The 2 mm thick Schott B270 glass is precision-ground and polished for optical flatness, then coated with multiple nano layers to suppress reflections and glare.
Four-Stop Light Reduction and Horizon Control
The 4-stop density smoothly darkens the sky while leaving the foreground untouched, handling the extreme contrast typical of dawn and dusk. Because the transition is reversed, the densest portion aligns with the horizon line rather than the top of the frame, so the filter runs out of usefulness when the brightest area moves far above or below that line. It is not suited for scenes where the transition zone must fall in the upper third of the composition.
2 mm Schott Glass and 100 mm Holder Compatibility
The filter fits Sirui’s NDH-001 holder and other standard 100 mm systems, accepting lenses as wide as 16 mm on full-frame bodies with filter threads up to 82 mm without vignetting. The hardened 2 mm substrate resists scratches in the field, while the nano coating repels water and oil for easier cleaning. Photographers using filter threads larger than 82 mm or holders narrower than 100 mm will need a different solution.
How it compares
Measured against everything we stock in Camera Extras & Accessory Packs, at today’s prices. Recalculated every night.
- Price $54.99
- Pricier than about 58% of the 2,266 comparable items (median $39.99).
Specifications
No published specifications for this item yet.
Questions about this item
Will the 100 x 150 mm size fit the 100 mm filter holder I already own?
Yes, the rectangular 100 x 150 mm dimensions match standard 100 mm filter holder systems, including the Sirui NDH-001 holder.
How can I confirm the 4-stop reverse GND is performing correctly in the field?
Check that the brightest part of the horizon is darkened smoothly without a hard line, and that the sky above stays neutral while the foreground exposure remains unchanged.
Does the box include a filter holder or pouch, or must I buy them separately?
The filter ships as a single 2 mm Schott B270 glass panel with nano coating; a compatible 100 mm holder such as the Sirui NDH-001 and a protective pouch are sold separately.
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