Cp Goerz Berlin Serial Numbers
I'm a large format b&w photographer with a great interest in classic lenses, of which I have a number, in addition to some modern lenses. My first, and one of my oldest, lenses, is a CP Goerz Berlin Series. Equipment and cameras as Photographer CP Goerz. “Estimated numbers of serial production of binoculars of Optische Anstalt C.P.GOERZ - Berlin Serial numbers were. Description This is a 7 power instrument. The eye end of the left prism housing is marked “TRIEDER BINOCLE / Armee Mod. Pat.” That on the right is marked “C. / GOERZ / BERLIN.”.
By 1895 some 30.000 had been already sold. The name Dagor was adopted only in 1904 and the design was licensed to almost every lens maker ever since.
It is known that these binoculars were used by Artillery officers. I have also found a picture in an old book of a German Officer with a pair of these binoculars. Goerz also supplied yellow filters, distance measuring reticle and compass at extra cost. The lenses are tiny, at only 20mm diameter, and the magnification is x7.
It was based in Berlin-Friedenau. In 1888 Goerz employed the engineer Carl Moser (1858-1892) and the optician Karl Hertel to start the development of lenses.
It was referred as Double Anastigmat Goerz. If you want an explanation of what problem the Anastigmats solved, go to my page about the Some contemporaneous ads from the other side of the Atlantic. Adversing in Photominiature April 1899 Adversing in Photominiature December 1909 Adversing in Photominiature Feb 1900 The following reproductions from Goerz catalogs, and a lot more from other lens/camera makers, you can find at website. Excellent online source. These are both from the 1913 Goerz catalog.
Go to: It has more than 700 pages with thousands of lenses description, pictures and diagrams. This Dagor, is from 1911. I bought it in a shoe box together with a Voigtlander Orthoscop from 1858, a Tessar also from 1911 and a Rodenstock Rapid Aplanat #2 from 1910/20. Also some parts of rollerblind shutters and lens elements, that I could not identify, were in the pack. The origin was Santos, a harbor city, 60 Km from Sao Paulo.
I'm a large format b&w photographer with a great interest in classic lenses, of which I have a number, in addition to some modern lenses. My first, and one of my oldest, lenses, is a CP Goerz Berlin Series III f/6.8, 8 inch 'Goerz Double Anastigmatic' (Dagor) in a compound shutter (which believe it or not works well!) From reading Kingslake and Vade Mecum, I know that because it says 'Goerz Double Anastigmatic' instead of 'Dagor', it is prior to 1904, when they began to use the name 'Dagor' (apparently to differentiate themselves from the other double anastigmatics.) But as a matter of pure curiosity, I'd love to know the exact year. The serial number is 140390. Does anyone know of a site or other source which provides a cross reference between Goerz/Dagor serial numbers and year of manufacture? Right now I know that it is between 1892 and 1904. Thanks, Paul.
It is an excellent source for understanding the genealogy of most of the lenses ever produced and the problems associated to lens construction. If you want something online: download the 'A Lens Collector Vade Mecum' it is only 15,99 USD and an invaluable source of information. Go to: It has more than 700 pages with thousands of lenses description, pictures and diagrams. This Dagor, is from 1911. I bought it in a shoe box together with a Voigtlander Orthoscop from 1858, a Tessar also from 1911 and a Rodenstock Rapid Aplanat #2 from 1910/20.
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.
Unknown Royal Navy official photographer IWM n.pub. German official photographer Royal Air Force official photographer BBC British official photographer Brooks, Ernest (Lieutenant) Ministry of Information Photo Division Photographer Press Agency photographer Royal Naval Photographer Wood, Conrad Brooke, John Warwick (Lieutenant) War Office official photographer Royal Flying Corps official photographer No.
The code word is C A M E R O S I T Y standing for 1,2,3,4,etc. A lens marked ES-413 was built in 1947.
The name Dagor was not used yet. It was referred as Double Anastigmat Goerz. If you want an explanation of what problem the Anastigmats solved, go to my page about the Some contemporaneous ads from the other side of the Atlantic. Adversing in Photominiature April 1899 Adversing in Photominiature December 1909 Adversing in Photominiature Feb 1900 The following reproductions from Goerz catalogs, and a lot more from other lens/camera makers, you can find at website. Excellent online source.
If you want something online: download the 'A Lens Collector Vade Mecum' it is only 15,99 USD and an invaluable source of information. Go to: It has more than 700 pages with thousands of lenses description, pictures and diagrams. This Dagor, is from 1911. I bought it in a shoe box together with a Voigtlander Orthoscop from 1858, a Tessar also from 1911 and a Rodenstock Rapid Aplanat #2 from 1910/20. Also some parts of rollerblind shutters and lens elements, that I could not identify, were in the pack. The origin was Santos, a harbor city, 60 Km from Sao Paulo. I tried to trace it back, tried to know to whom in belonged, but the seller, having an antique shop there, could not remember how it all arrived to his hands.
Extremely sharp optics, as good as any modern day binocular. One of the very first mass produced prismatic binocular. A nice history piece. CONS Small objectives and un-coated prisms, providing limited use for astronomy.
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Zeiss was already using a well established D.F. Code system for their Ministry binoculars, so Goerz kept the system and stamped the binocular 'D.F.99' The D.F., stood for 'Doppelfernrohr' (Double-Telescope), and this can be traced back to binoculars that Zeiss were producing in the year 1874. In the year 1903, more orders were placed, and Goerz opened a department at the Berlin factory solely for the production of military optics. The new model was known as the D.F. The Goerz business rapidly grew, and they quickly became the worlds biggest producer of military optics. It was also around this time that they started to produce a series of refracting telescopes. Zoku sayonara zetsubou sensei.
A shellburst close by did some damage(during WW1) to the front ring that was replaced at the factory free of charge since the owner in the US was an expat with some connections in the food distribution services for the British troops. My records after 1950 are a bit sketchy but I hope that helps!
Just fighting with very oxidized brass barrels! I just reported what has been posted, on this forum, by Paul Fitzgerald. He owns a few Dogmars (see his post on this same thread), and confirms that the two cells, IF used alone, show a marked softness. All that in perfect accordance with what's written in the Vademecum, and with the personal experience of all those who tried to use dialyte anastigmats (4E/4G) as single cells, behind the diaphragm. It is common knowledge that the single cells are corrected for astigmatism, but aren't well corrected for zonal spherical aberration (and perhaps even show a little chromatic aberration). That's exactly what you need to have a soft focus lens. The effect could be pleasant or not-so-pleasant, strong or delicate.
It gives an idea of Dagors capability in rendering fine details. But if you want to check a serious experience that definitely prove it, go to: You will see a Dagor 19 inches there, and the result one can still reach with a lens from 1905.
Cp Goerz Berlin Serial Numbers
Only four years old, Goerz was producing a Rapid Rectilinear lens called Lynkeioskop, one of the best RR versions. That was the beginning of a huge success. By 1895 some 30.000 had been already sold. The name Dagor was adopted only in 1904 and the design was licensed to almost every lens maker ever since. It is a convertible lens.