The Ernoflex line was introduced by Ernemann in 1914, and consisted of the Ernoflex, which was a strut folding SLR camera with a drop bed, and focal plane shutter. It was available with either a single or a triple extension bellows. In 1924, the line was divided into the Ernoflex I and II.
The Ernoflex I did not have the drop bed, and was fitted with a single extension bellows. It could be purchased in the 4.5 x 6cm, 6.5 x 9cm and 9 x 12cm sizes, with Ernon 3.5, Ernotar 4.5 Tessar 4.5 lenses.
The Ernoflex II kept the drop bed to support the triple extension bellows. It was available only in the 9 x 12cm size.
After Ernemann merged with Contessa-Nettel, Goerz and Ica to form Zeiss Ikon, they were remaindered out, and were listed in the catalog through 1927 only.
Around 1926 Ernemann introduced a stereo version of the Ernoflex. The Stereo-Ernoflex is of the 45 x 107mm format,. It was available with matched pairs of the lenses listed above. The Stereo-Ernoflex was given the Zeiss catalog number of 621/1, and was carried in the catalog until 1929.