Carl Zeiss Jena Tessar 1:4.5 f=30cm Vintage Large Format Lens Nr.1025461 Rare Carl Zeiss Jena Tessar 1:4.5 f=30cm (300mm) Large Format Lens – Serial Nr.1025461 – ca. 1912–1913 This is a beautiful and rare early Carl Zeiss Jena Tessar lens, made in Germany around 1912–1913, during the pre–World War I production period. It’s a 30 cm (300 mm) f/4.5 large-format lens in a heavy black enamel brass barrel, inscribed “XII²” on the side. A genuine collector’s piece representing the early era of Zeiss optical craftsmanship, featuring the legendary Tessar 4-element / 3-group design by Paul Rudolph.