A Technical Deep Dive: The ZEISS Differentiators

ZEISS has long been a preeminent name in optics, but what truly distinguishes their lenses from others? This article explores the core technological and manufacturing differences that set ZEISS apart in the vision care industry.
How to determine if a lens is telephoto?

One way to determine if a lens is telephoto is by its focal length. Generally, a lens with a focal length of 70mm or longer is considered telephoto.
