Because the lens itself is a big round lens, the peripheral part of the lens must be worn off before it can be assembled into a frame, and the anti-counterfeiting mark is generally at the edge. Zeiss double anti-counterfeiting. If you want to know the authenticity, let him provide the original packaging of the lens, scan the anti-counterfeiting QR code and check the mismatch. If they all match, there is basically no problem.
The difference between Zeiss lens and ordinary lens;
First, the lens has different meanings.
Zeiss is a lens brand, and the lenses produced in carl zeiss are called carl zeiss lenses. Ordinary lens is actually high definition in the literal sense, and there is no such word in the professional field.
Second, the technology is different.
Carl zeiss Lens has a number of patented technologies, and it is a leading international company in the field of optics and optoelectronics. The so-called ordinary lenses are only produced by general technology.
Third, the materials are different.
Carl zeiss lens is basically made of BS- titanium metal, which has a longer service life than ordinary lens materials, and also has the ability to resist sweat corrosion. But also superior to the traditional titanium alloy in fatigue strength and corrosion resistance. The so-called ordinary lenses only use ordinary glass lenses or resin lenses.