On Thu, 14 Jul 2011, Dawid Loubser wrote:
> Form the lens construction diagram, I always thought the Macro 50/3.5
> to be a minor variation of the Tessar design.
Check out the diagrams for 5-element Planar/Xenotar/CZJ Biometar. These
lenses should be quite different from Tessar, performance-wise.
Priit.
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