Quote Originally Posted by renes View Post
Do someone know the focal lenght, lens formula and how fast is "Voigtlander Euryscop 00" ?
It's very hard to tell. At first, these Voigtlander rapid rectilinears did not use the Euryscop name, but they were RRs. Then when they were marked with that moniker, the series number sometimes changed. It's not easy to be sure, until you measure one in your hands.