Place of Origin | China, Shanghai | Brand Name | Illimon |
Model Number | ND filters | Size | 37mm |
Product name | ND filter | Frame thickness | 1.3mm |
Frame height | 2.91mm | Filter material | HD optical glass |
Frame material | Aerospace aluminium | Surface quality | 0/0, 40/20 ~ 80/50 |
Material | Aluminum + Optical Glass | Surface Accuracy | 1/10 in, 1/4 into 2 into |