The serial number is 291,040, it was released between 19.Ĭloses smoothly. Many lens manufacturers copied this design, with minor modifications, to get around the patent.Įven now, this design is implemented in the format camera lenses from Schneider and Rodenstock. Goerz Berlin Dopp-Anastigmat Serie III DAGOR 150 mm f 6.8 with glued extension ring M42, for mount on a DSLR camera Dagor design has been implemented in many lenses. The first batches of Dagor were so in demand that production capacity of the company is not enough. The first lens-anastigmatic is Protar, designed by Carl Zeiss, but it did not get such a success as Dagor.įor lenses that time Dagor well-corrected coma, distortion, a chromatic and spherical aberration. ![]() Photos of that time wanted to have a versatile lens for portraits, as well as for landscape photography.ĭagor actually one of the first anastigmatic, commercially available. This had an aperture of f9.5, later f9, and lengths of 11 - 26. Lastly a series III for process work was introduced in 1911. This was followed by the series II at f8 in lengths 4 - 26.Īround 1906 a wide-angle model was introduced with lengths of 3. 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. Goerz Lens S Serial Numbers And Writings.
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