I understand that Carl Zeiss lenses are "quality" in brand. But what does having a Carl Zeiss lens do for the Nokias? How is the lenses different from say Samsung's GS3 lenses, or/and Apple's "saphfire" lenses...
I worked for Zeiss for a few years selling their Electron Microscopes for research. At that time, Zeiss lens were known to be one of the last "glass" lens available for most optical use. Having glass lens means that they are impervious to things like heat expansion, distortion, historesis; etc. Plastic lens are subject to heat and cold expansion and contraction. That means that you lose sharpness and focus ability and overall image quality from edge to edge.
Mind you, I'm no engineer but just having a glass lens over a plastic one means better quality and stability to me.
Well... you have a major optics manufacturers scaling things down to the smartphone camera level.... it would almost be at the same level as if Canon or Nikon designed the camera itself.
Zeiss lenses have a reputation for not only the quality material used but also the quality in the element design and placement within the lens.
It's to the camera as Dolby was in the old days to audio or maybe Beats is to audio today?