最后更新:
2020-7-11
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中性密度片，又称密度片即在可见光范围内有一致的吸收特性的滤光片，起阻光作用，没有色彩改变，它起着调节光亮的作用。
| 型号 | 类型 | 厚度 | 透光率% | 公差范围(400-700nm) | 详细内容 |
| NDFA-02 | 有色玻璃 | 2mm | 2.0% | 1.0~4.0% | More |
| NDFA-05 | 有色玻璃 | 2mm | 5.0% | 1.0~9.0% | |
| NDFA-10 | 有色玻璃 | 2mm | 10.0% | 6.0~15.0% | More |
| NDFA-25 | 有色玻璃 | 2mm | 25.0% | 18.0~32.0% | |
| NDFA-30 | 有色玻璃 | 2mm | 30.0% | 23.0~37.0% | |
| NDFA-50 | 有色玻璃 | 2mm | 50.0% | 41.0~59.0% | More |
| NDFA-65 | 有色玻璃 | 2mm | 65.0% | 58.0~72.0% | |
| NDFA-70 | 有色玻璃 | 2mm | 70.0% | 63.0~77.0% | |
| NDFA-70R | 有色玻璃 | 2mm | M25,M27,M28,M30镜圈(摄影用) | ||
| OD值与透光率对照表 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% |
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