When Zeiss Ikon was formed by the merger of Contessa-Nettel, ICA, Ernemann and Goerz, some models from the individual makers were continued, some were dropped. The Simplex was an inexpensive plate camera that was carried over into Zeiss production. It was available only in 9x12cm size, with either a 140/9 Frontar or a 135/6.3 Novar lens. Production ended in 1930.