Zeiss and Carl Zeiss are one and the same.
Zeiss lenses and Carl Zeiss lenses are both from Carl Zeiss, a global, international company that is a leader in optics and optoelectronics, providing products and services to customers in the fields of semiconductor technology, industrial optics, life sciences, medicine, ophthalmology and optometry.
Carl Zeiss operates in China with a focus on medical devices, eyeglass lenses, industrial measurements, semiconductor industrial equipment, electron microscopes, and microscope equipment.
Features of Zeiss
With high resolution, excellent color reproduction, and virtually no four-corner distortion, Carl Zeiss. Zeiss provides you with high quality photography faithfully. The red T* lens is a proud product of Carl Zeiss. Carl Zeiss is proud of the product, the world. In the photography industry, Hasselblad, Locke Leica two camera giants are using Carl Zeiss lenses.
Zeiss's optical products are very complex, the product line is very long, involving medical scopes, microscopy, surveying and mapping, astronomical observation, military, film and television, etc., photographic lenses are just a branch of its tree.
Reference: Baidu Encyclopedia--Carl Zeiss