Select SCHOTT B270 optical special glass.

Double-sided anti-reflection coating improves the lens transmittance to an average of 99.8%.

Double-sided anti-fouling coating prevents moisture from entering, mold growth, super water-repellent and oil-resistant, and the lens is smooth and easy to clean.

The ultra-thin 3.2mm aluminum frame can reduce the problem of vignetting on wide-angle lenses.

The surface of the frame is treated with non-stick Teflon and anti-reflective black matte treatment.

The front thread design of the ultra-thin frame can smoothly cover all the original lens caps.