We use Schott B270 optical glass and Japanese-made Nitto polarizing film polished to a flatness of ±20μm for optimal imaging. Then we add our eco-friendly EU RoHS 2.0 standard double-sided multilayer nanocoating that is hydrophobic, anti-reflective, anti-smudge, wear-resistant, and antistatic, making it very easy to keep clean while also defogging quickly.
For the rim, we use precision machining for a tough but lightweight aluminum alloy frame. The slim 7mm design reduces vignetting when using a wide-angle lens. The inner circle is treated with non-stick Teflon and a matte black finish and the embossed frame is easy to rotate. The shock-absorbent frame also reduces the chance of damage to your lens if it takes a knock.