Caprivi, you made a mistake! In 1852 Moritz Hensoldt founded his optical company in Wetzlar, western Germany. He pioneered the making of slim binoculars and rifle scopes. By 1928 the Hensoldt company was a subsidiary of Carl Zeiss, Jena. After 1945 Jena was in the east, the GDR, but the company with the Zeiss name fled to the west. The now "people owned" Zeiss factory in Jena continued to make scopes and used the Zeiss name in the east, but could not sell them under this name in the west. The now western Zeiss company had the name and still owned the Hensoldt factory. Until the late 1960s they sold the scopes made in Wetzlar under the Hensoldt name, then the changed the name of the same scopes to Zeiss. "Diasta", "Diatal" and "Diavari" scopes may be found marked "Hensoldt" or "Zeiss", there is absolutely no difference! Today's "Zeiss" scopes are actually "Hensoldts", made at the Hensoldt factory by Hensoldt people and developed from Hensoldt designs.