Last Update: 2023-3-22
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Neutral Density Filter reduces the brightness of an image without changing the color of the scene. It allows all wavelengths to pass through equally.
| Part No | Type | Thickness | Transmission | Tolerance(400-700nm) | Details |
| NDFA-2 | color glass | 2mm | 2.0% | 1.0~4.0% | More |
| NDFA-05 | color glass | 2mm | 5.0% | 1.0~9.0% | |
| NDFA-10 | color glass | 2mm | 10.0% | 6.0~15.0% | More |
| NDFA-25 | color glass | 2mm | 25.0% | 18.0~32.0% | |
| NDFA-30 | color glass | 2mm | 30.0% | 23.0~37.0% | |
| NDFA-50 | color glass | 2mm | 50.0% | 41.0~59.0% | More |
| NDFA-65 | color glass | 2mm | 65.0% | 58.0~72.0% | |
| NDFA-70 | color glass | 2mm | 70.0% | 63.0~77.0% | |
| NDFA-70R | color glass | 2mm | M25,M27,M28,M30 ring(photograph) | ||
| OD value with transmission OD=Log(1/T) | |||
| OD | Trans% | OD | Trans% |
| 0.10 | 79% | 0.15 | 70% |
| 0.20 | 63% | 0.30 | 50% |
| 0.40 | 40% | 0.50 | 32% |
| 0.60 | 25% | 0.70 | 20% |
| 0.90 | 12.5% | 1.00 | 10% |
| 1.30 | 5% | 1.50 | 3.2% |
| 2.00 | 1.0% | 2.50 | 0.3% |
| 3.00 | 0.1% | 4.00 | 0.01% |
| 5.00 | 0.001% | 6.00 | 0.0001% |
：643049870
：Accuteoptical