Die Firma entstand 1889
Ausser Kameras wurden ab 1900  eigene Verschlüsse und ab 1907 eigene Objektive gefertigt.

Ging 1926 in der ZEISS IKON Gruppe auf. 
 

Cameras:

Amateurkamera (1895-1907)
Archimedes (1897-1914)
Atelierkamera (1910)
Baby Ernemann (1913-17)
Berry (1896-1914)
Bob Geheimkamera (1900-03)
Bob (1900- 26)
Bobette (1926)
Cassettenfilmcamera (1902-06)
Dove Stereoscop (1902-07)
Edison (1892-97)
ermanox (1924-26)
Ernette (1926)
Erni  (1924-26)
ernoflex (1922-26)
Europa (1898-1918)
Film  (1899-1926)
Heag (1900-1926)
Italia (1898-1914)
Jagdkamera (1914)
Klappkamera (1900-1926)
Klappreflex (1913-19)
Miniaturklapp (1913-26)
Liliput (1914-26)
Luftbildkamera (1914-18)
Minor Box (1896-1918)
Mignon (1913-20)
Moser Stereoscop (1902-07)
Multicolore (1900-03)
Nansen (1896-06)
Norka (1919-24)
Puck (1902-03)
Reflex Stereo (1913-18)
Röntgen (1898-1903)
Rolf (1922-26)
Rundblickkamera (1907-12)
Saecular (1898-03)
Simplex (1917-26)
Spiegelreflex Kamera (1908-18)
Stereoklappkamera (1913-18)
Unette (1925-26)
Universal (1895-1903)
Velo Klapp (1901-20)
Velocam (1901-06)
Windsor (1899-1907)
Ucanett (1952)
Uniflex (1950)

Founded 1889
Beside cameras Ernermann
produced own shutters from 1900 on
and own lenses from 1907

Got part of ZEISS IKON
group in 1926