The King Regula was introduced in 1950. The first generation were simple viewfinder cameras with body mounted shutter release and came with either wind knobs or levers. The shutter had to be cocked by hand on the shutter itself. The second generation, introduced in 1953, had a new body design and included either extinction meters, coupled rangefinders or uncoupled rangefinders. They had lever winders and the shutters were cocked automatically during film transport. The third generation or Regula III series, introduced in 1956, were larger sturdier cameras introducing uncoupled and coupled light meters. Most were rangefinders. Models with interchangeable lens mounts were also introduced. After this Regula-Werk King started producing cheaper plastic cameras which will not be detailed here.
Ten years of Regulas, the 1950 Regula IP on the left, the 1959 Regula Super Automatic with interchangeable Steinheil Quinon f/1.9 on the right.