The production profile of C.P. Goerz was very wide: lenses, cameras, photo-stereo. Own production number, disconnected from the C.P. Goerz Berlin numbers. “Estimated numbers of serial production of binoculars of Optische Anstalt.

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The Holostigmat, designed by Conrady, is a combinable lens sometimes sold in sets providing several focal lengths. The original model, series I of 1901, had an aperture of f6.1 and focal length of 4 - 12' when introduced, later increased to 20'. This was followed by the series II at f8 in lengths 4 - 26 ½'. 1906, was faster at f4.6 with lengths of 4 ⅜ - 14 ⅔'. Around 1906 a wide-angle model was introduced with lengths of 3.9 - 9.2'. Lastly a series III for process work was introduced in 1911.

This had an aperture of f9.5, later f9, and lengths of 11 ¼ - 26 ½'. The series II was discontinued in the late 1900s the other models with reduced focal length range were produced into the 1930s.