camera optical glass filter ND1000
- Category: Camera Filters >>>
- Supplier: Nantong,Fowo,Trading,Co.,Ltd.
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Product Overview
Description
FOWO
1.Reduce light,lower the shutter speed,extended exposure timeusing large aperture
2.T6061 aerospace aluminum alloy,corrosion resistance,high toughness,excellent oxidation
3.Exinction of thread and other accessories
4.Laer etching process,not easy fade,durable
| Property | Specification |
| Material | B270 optical glass |
| Coating | waterproof, oil-proof, scratch-resistant |
| Size | 37mm to 86mm Neutral Density Filter |
| Shape | Round nd filter |
| Thickness | 1.6+/-0.1mm |
| Frame thickness | 3.1mm |
| Edge Finish | Ground and beveled |
| Surface Quality | 60-40 scratch-dig |
| Surface Flatness | λ/4 @ 633 nm |
| Parallelism | ≤3 arc min (≤0.9 mrad) |
| Transmistance | >85% |
| Clear Aperture | >90% of central diameter |
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