Carl Zeiss was the lens making division of the Zeiss Ikon conglomerate. So technically, they didn't make cameras. Fascinating how Zeiss Ikon came be -- bunch of companies came together to survive the depression of the 20's in Germany and Carl Zeiss was only one of those companies. So big they had a hand in almost everything.
I've shot a lot of their pre-war MF and rangefinders and I think they're amazing. Such Art Deco stuff too. The contax II/III and Zeiss Sonnar was so much better then the competition (of course, in my opinion), and the Ikoflex/Super Ikontas were equal to anything out there. It's equally fascinating to learn why they didn't survive the post-war period. Kind of a sad story regarding the destruction caused by the war, politics, mismanagement.