TRIOTAR Carl Zeiss: f 4,5-f3,8-f 3,5/75mm, triplet: Rolleicord I “art Deco”, Rolleicord I, Rolleicord Ia, Rolleicord Ia Polizei, Rolleicord II Phillips, Rolleicord II lasts versions sharing with Xenar Schneider, Rolleicord III first versions sharing with Xenar Schneider 3,5/75. XENAR Schneider Kreuznach: f 4,5/75 (300 units made in December 1947 for Rolleicord II only, the rarest standard lens for a Rollei TLR), f3.5/75, 4 elements, 3 groups, Tessar copy ( Rolleicord II sharing with Triotar Zeiss 3,5/75, III sharing with Triotar Zeiss 3.5/75, IV, V, Va, Vb, from 1947 to 1977) (Rolleiflex 3,5X 3,5 A MX 3,5B MX EVS sharing with Tessar), Rolleimagic and Rolleimagic II Rolleiflex T from 1973 to 1976 the Xenar 3.5/75 was used on Rollei TLR cameras from 1947 to 1977, lenses coated from November 1949. TESSAR Carl Zeiss:f2,8/80mm, 4 elements, 3 groups, focusing 1m to infinity, “T” lens coating (Rolleiflex 2,8 also known as A, December 1949 to August 1951). It was called Zeiss OPTON Tessar from 1946 if made in CZ Oberkochen during some years and afterward OPTON Tessar and OPTON (OPTische Werke OberkocheN) for some countries due to trademark issues with Carl Zeiss Jena It was used for Rolleiflex cameras from 1928 to 1973, treated with “T” lens coating from 1949, the Tessar lens quality helped very much to the Rolleiflex fame. ( Page copyright Carlos Manuel Freaza 2009) TESSAR Carl Zeiss: f4,5-f3,8-f3,5/75mm, 4 elements, 3 groups, 54º, focusing 1m to infinity (Rolleiflex Original, Standard, Automat, New Standard) (3,5X 3,5 A MX 3,5B MX EVS sharing with Xenar Schneider 3.5/75), T up to 1973(recomputed version).