It was my understanding that Zeiss took the original Contax Distagon 15mm design of 13 elements in 12 groups and added two aspheric lenses to the design increasing performance from f3.5 to f2.8 but loosing 4 inches at close focus in the production of the newer Zeiss ZF & CP.2 15mm lenses. For what it's worth, the original Distagon lens design came about in 1950. Do you have some info which contradicts this? I would love to see the comparison you shot between the Zeiss CP.2 15mm & the Tokina 16-26mm PL showing the Zeiss 15mm running circles around the Tokina lens, any chance you could post this? By the way, I also own over 20 Zeiss lenses.
All the Best!
Dave
All the Best!
Dave
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