Based in Berlin, Germany, C. Goerz was a manufacturer of lenses and cameras beginning in 1888. (see here for dating these serial numbers). Dagor Lens Information. Notes and threads on Dagor lenses. On Goerz Serial numbers and dates Goerz Amer. Serial #'s from Eddie Bolsetzian.

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Lens: f4.5, 75mm Dogmar. Iris diaphragm to f45. Shutter: Compound, speeds 1 - 1/250, B, T. Carl Zeiss Age Lens by the Serial Number. Goerz/Berlin and Ernemann/Dresden to support. I was hopeing if i gave you the serial numbers and writings you can. Introduction II. Goerz Kino-Hyper lens.

C.P. Goerz

Berlin

Goerz Berlin Lens Serial Numbers

Germany

Series III No.4. f7.7, 240 mm

Lens Type:

Anastigmat. 6 elements.

Iris diaphragm marked in Goerz scale 6 - 384 (f8 - f64). Brass mount. For whole-plate.

Serial Number:

16411 (c. 1893) .

Ross & Co.

London

England

Series III No. 1. f7.7, 6'

Lens Type:

Anastigmat. 6 elements.

Waterhouse stops. Brass mount. For 5' x 4'

Serial Number:

1089 .

The Goerz Double Anastigmat was designed by von Höegh and introduced in 1892, from 1904 it was known as the Dagor. It proved very successful and was widely copied. The series III is a general purpose lens working at f6.8 in the shorter lengths and f7.7 in longer lengths. Available in sizes of 1 ⅝ - 35' (in the UK in 1900). The series IV was a modified design for copying and architectural use, working at f11 it was introduced in sizes up to 47'.

The Ross-Goerz lenses were made under license by Ross in London from 1893, they were replaced by Ross designed lenses in the late 1900s.

References & Notes:

BP 23378/1892. BP 21458/1894. BJA 1894, p. 53. BJA 1900, pp. 62, 379. BJA 1905, p. 377. N&G Cat. 1908, p. 72. Neblette, Principles and Practice, p. 115. Kingslake, p. 90. Abney, Instruction, p. 96. DRP 74437/1892.

W. Watson & Sons

London

England

Series 1a. f4.6, 6 ⅛'

Lens Type:

Anastigmat. Reversed Dagor type. Dividing/combinable. 65° angle.

f4.6, 6 ⅛' combined; f8.5, 10' front and back groups. Iris diaphragm, two scales to f32 (combined lens) and f64. Sunk mount. For 5' x 6'.

Serial Number:

2375 .

With:

Flange.

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'.

The Ia, c. 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'. Popcorn time download.

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.

References & Notes:

BJA 1902, p. 1167. BJA 1903, p. 963. BJA 1905, p. 1200. BJA 1907, pp. 884, 1190. BJA 1908, p. 755. BJA 1912, pp. 722, 932. YBP 1901, pp. 549, 608.

A.E. Staley & Co.

London

England

Series IV. f6.5, 4 ¾'

Lens Type:

Air spaced Dagor.

Iris diaphragm to f44. Magnalium mount. For 3 ½' x 4 ¾'.

Goerz Berlin Lens Serial Numbers Chart

Serial Number:

10273 .

Goerz Berlin Lens Serial Numbers List

Developed by E. Arbeit in Germany, introduced by Staley in November 1907.

References & Notes:

BP 2305/1903. BJA 1909, p. 16. BJA 1912, p. 6. DRP 135742. Kingslake, p. 94.