Customization: | Available |
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After-sales Service: | Replace, Refund |
Warranty: | 12months |
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Product Name | Optical SLR Camera Photography Circular Filter for Slr Lens |
OD | 4.0 |
Material | Optical lens |
1.Material | BK7 Glass, Fused Silica or Color glass |
2.Dimensional tolerances | 0/-0.1mm |
3.Clear aperture | >90% |
4.Surface flatness | λ/2@633nm |
5.Parallelism | 1 arc minute |
6.Surface Quality | US Standard 40-20,ISO Standard 3X0.25 |
7.Edge Chip | <0.1mm |
8.Bevel | Based on clients' requests |
9.Coating | AR, HR, PR or based on clients' requests |