LEE210 Neutral Density (ND) Filter
Spectrally neutral density filter providing uniform light attenuation across the visible spectrum for exposure control without colour shift.
- Optical density: OD 0.7 (20.9 % T)
- Light reduction: ~2.3 stops
- Spectral range: 380 – 780 nm (visible)
- Transmittance flatness: ± 0.9 % across visible range
- Construction: Ion-assisted hard-oxide; 5 – 450 mm shapes, 0.21 – 3.8 mm thick
- Custom options: Custom OD values, extended spectral range, combined ND + colour correction, rapid prototypes
Learn more
LEE210 Specialty delivers Optical density OD 0.7 (20.9 % T), Light reduction ~2.3 stops, and Spectral range 380 – 780 nm (visible).
The hard-oxide coating is built for repeated handling, heat, and cleaning.
Best suited for:
Camera and lens systems requiring precise exposure control without aperture or shutter-speed changes — essential for maintaining depth-of-field or motion-blur characteristics in bright conditions
Description
LEE210-glass is a deep neutral-density attenuator that mirrors the look of Lee’s 210 gel while delivering the robustness of hard-coated glass. Transmission hovers around 20 % from 400 nm to 780 nm, varying by less than ±1 %, so every colour is dimmed evenly without introducing a cast. The optical density is therefore ~0.7 (a two-stop cut), giving designers tighter control over beam intensity, exposure or detector input without sacrificing colour fidelity.
Key advantages
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Spectrally flat ND (~0.7 OD) – Consistent 20 - 22 % T across the visible spectrum for true colour dimming.
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Accurate Lee 210 match – Lets crews interchange gel and glass with zero look shift.
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Heat-proof, solvent-proof glass – Hard oxide coatings shrug off high-power LEDs, HMIs and frequent cleaning.
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No polarisation artefacts – Maintains beam shape and prevents glare unlike some laminated film NDs.
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Custom formats – Discs, squares or complex shapes up to 450 mm, 0.21 – 3.8 mm thick, on Borofloat®, soda-lime, D263 T or Corning Eagle XG glass.
Typical applications
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Stage & architectural fixtures – Tame output from bright sources without colour shift or disposable gels.
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Cinema & still-photo cameras – Achieve correct exposure and depth-of-field when in-lens NDs aren’t available.
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Broadcast lighting – Balance mixed lamp types to a common stop while keeping white point steady.
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Laser & sensor test benches – Provide predictable attenuation for detector calibration and safety.
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Spectroscopy & fluorescence setups – Introduce uniform attenuation where spectral accuracy is critical.
Need cut parts tomorrow or production quantities next month? LEE210-glass filters are coated, diced, edged and packed to your exact spec—with the fast lead times KUPO Optics is known for.
