The ARRI FSND 1.8 is an external neutral density filter with 6 stops of attenuation, using the technology of internal FSND filters in ALEXA Mini and AMIRA cameras. The Schott B270i glass is double-side coated, reducing surface reflectance to 0.2%.
Flat spectral response in the visible and infrared bands ensures neutral colors even when stacking multiple filters and when shooting HDR. Black contoured edges reduce light scatter and the risk of chipping when inserted into a matte box.
Ideal for
Why ARRI FSND 1.8 4 × 5.65″
- Full Spectrum – Neutral light loss in both visible and IR bands.
- Low reflectivity – Coating reduces surface reflectance to 0.2%.
- Durable edges – C-shape and black edges prevent chipping and light scatter.
- Protective case – CORDURA case with a cleaning lining.
Key specs
| Type | ND filter – Full Spectrum (FSND) |
|---|---|
| Size | 4 × 5,65″ |
| Strength / density | 1,8 |
| Attenuation | 6 stops |
| Material | Schott B270i glass |
Construction
| Coating | double-sided: ND, anti-reflective, hydrophobic, oleophobic, hard coating |
|---|---|
| Surface reflectance | 0,2 % |
| Edges | black, C-shaped, GS1 laser code |
| Case | CORDURA with antistatic MICRODEAR lining |
