The story of one of Germany’s most famous brands started in 1929 (some say 1928) when the German firm of Franke & Heidecke introduced the Rolleiflex twin-lens reflex. This produced a 6x6cm image on Kodak's 117 (also known as B1) roll film.
The Rolleiflex "Standard" of 1932, and all later Rolleiflex and Rolleicord cameras, other than the Baby Rollei models which used 127 film, would use the B2 or Kodak 120 film.
