I'm a large format bw photographer with a excellent attention in classic lenses, of which I have got a amount, in inclusion to some modern lenses. My initial, and one óf my oldest, lens, is definitely a CP Goerz Berlin Series III n/6.8, 8 inch 'Goerz Double Anástigmatic' (Dagor) in á compound shuttér (which beIieve it or nót works well!) Fróm reading Kingslake and Vade Mecum, I know that because it says 'Goerz Increase Anastigmatic' rather of 'Dagor', it will be prior to 1904, when they began to use the name 'Dagor' (evidently to distinguish themselves from the some other double anastigmatics.) But as a issue of pure awareness, I'd like to understand the exact 12 months. The serial amount can be 140390. Does anyone understand of a web site or some other source which provides a frustrated guide between Goerz/Dagór serial numbers ánd season of produce? Right right now I understand that it is certainly between 1892 and 1904.
Thanks a lot, John. The lens was lastly finished on Sept 23rd at 3.47pmichael 1903. The last optical bench check was provided by Otto Plankshaft who considered it above regular and offered it his stamps before it was delivered to the delivery department. Otto had just ended up provided the news that he had been the very pleased father of baby twins and he has been allowed to leave work early. Some anecdotal proof does point out that Emil vón Hoegh sIapped him on thé back again and called him the accurate 'double' anastigmat ánd his nickname fróm that day was 'doppeldaddy'. The zoom lens was then sent via machine to New Yórk where it was coupled up to á shutter abóut thirty years afterwards. The zoom lens has seen action in both entire world wars and has been utilized as both a portrait lens and as a panorama lens utilized for battlefront récon.
Jul 30, 2011 Does anyone have a list of C.P. Goerz Berlin serial numbers? I have searched the net, but only found the numbers from the american branch. I got a Dogmar 6,3/135mm (S/N 353458) today, and according to the. German Binoculars C.P. Goerz Berlin - 6x Helinox Trieder Binocle. On the left is stamped 6 x 30 drp marinetreapla and on right has goerz berlin. The item has original brown leather hard case. Goerz Optical Company was founded in 1886 in Berlin, Germany by Carl Paul Goerz. In 1929 it merged with a number of. GOERZ BINOCULARS, 1897 - 1930s. Compiled by Peter Abrahams. field first price First 5 models also monoculars.
A shellburst close up by do some damagé(during WW1) tó the front band that had been replaced at the manufacturer free of cost since the proprietor in the People was an expat with some contacts in the food distribution solutions for the United kingdom soldiers. My records after 1950 are usually a bit sketchy but I hope that assists!
I'm a large format bw professional photographer with a excellent attention in traditional lens, of which I have got a amount, in addition to some contemporary lens. My initial, and one óf my oldest, lens, is a CP Goerz Bremen Series III y/6.8, 8 inches 'Goerz Double Anástigmatic' (Dagor) in á compound shuttér (which beIieve it or nót works well!) Fróm reading through Kingslake and Vade Mecum, I understand that because it says 'Goerz Two times Anastigmatic' rather of 'Dagor', it can be prior to 1904, when they started to make use of the title 'Dagor' (apparently to distinguish themselves from the various other double anastigmatics.) But as a issue of genuine curiosity, I'd love to understand the precise 12 months.
The serial amount is definitely 140390. Does anyone know of a site or various other supply which provides a frustrated referrals between Goerz/Dagór serial numbers ánd year of manufacture? Right today I understand that it can be between 1892 and 1904.
Thanks, John. The lens was finally completed on September 23rd at 3.47pm 1903. The final optical bench check was given by Otto Plankshaft who deemed it above ordinary and gave it his stamps before it had been sent to the delivery section. Otto acquired just been given the information that he was the proud dad of twin babies and he has been permitted to depart work early. Some anecdotal proof does mention that Emil vón Hoegh sIapped him on thé back and known as him the correct 'double' anastigmat ánd his nickname fróm that time has been 'doppeldaddy'. The lens was after that sent via machine to New Yórk where it had been coupled up to á shutter abóut thirty decades afterwards. The lens has noticed activity in both world wars and was utilized as both a portrait lens and as a surroundings lens utilized for battlefront récon.
A shellburst near by did some damagé(during WW1) tó the front side ring that was replaced at the stock free of charge of cost since the owner in the US had been an expat with some cable connections in the foods distribution services for the Indian soldiers. My records after 1950 are a little bit questionable but I hope that helps!
Goerz Dagor C.P. Goerz Berlin Dopp-Anastigmaat Serie III Dagor.
This is usually one of the most celebrated lens design ever. More than one hundred decades after its introduction it is certainly nevertheless a quite usable lens. It has been in 1982 that a mathematician Emil von Hoegh, 27 yrs old, proposed to Zeiss this dual anastigmat consisting of two triplets symmetrically arranged around the f stop.
Cp Goerz Berlin Serial Numbers
Zeiss was not interested, maybe because two years earlier they got released their very own anastigmat. So Emil took it to the also very youthful firm Goerz in Bremen. Only four years older, Goerz was producing a Quick Rectilinear zoom lens called Lynkeioskop, one of the greatest RR versions. That has been the starting of a huge achievement. By 1895 some 30.000 acquired been currently marketed. The name Dagor was adopted just in 1904 and the style was certified to almost every lens maker ever since.
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It is definitely a convertible lens. That means one can make use of just one cell placed behind the iris. In that case the mixed foci will be multiplied by 1,73, but as a trade off there is a significant loss in luminosity. Many of the above information I investigated on 'A background of the final lens' by Rudolf Kingslake, Academics Press Inc. ISBN 0-12-408640-3. It is usually an exceptional resource for knowing the genealogy of many of the lens ever created and the difficulties linked to lens design. If you would like something on the internet: download the 'A new Lens Enthusiast Vade Mecum' it can be only 15,99 USD and an invaluable source of details.
Move to: It offers even more than 700 pages with thousands of lenses description, pictures and blueprints. This Dagor, is certainly from 1911. I purchased 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 components of rollerblind shutters and zoom lens components, that I could not identify, had been in the package. The beginning was Santos, a have city, 60 Km from Sao Paulo. I attempted to trace it back again, attempted to know to whom in belonged, but the vendor, having an classic shop right now there, could not keep in mind how it all showed up to his fingers. These statistics suggesting aperture are not the acquainted series we are usually used to discover in 35 mm cameras. Goerz used a exclusive level. In the chart below we can notice the equivalents to the program using 4 - 5.6 - 8 - 11 - 16 - 22 - 32 - 45.
The 4,5 (that will be not really in the chart) indicates 6.8. In the lens ring it is proclaimed 1:6,8 but as the scale shows it as 4,5 I began to question if the tissue would possess been mounted in a barrel soon after. But be aware in the image below that the serial number is usually the same etched on the barrel or clip and on the tissues. Therefore f6,8 or 1:6,8 is definitely the lager aperture for this lens. The subsequent figures, even in this Goerz range, are very near to the normal series of f stops. The next 3 images are usually from the Image Club de Rome publication in 1899. The title Dagor had been not utilized however.
It was referred as Two times Anastigmat Goerz. If you need an description of what issue the Anastigmats solved, proceed to my page about the Some contemporaneous advertisements from the other aspect of the Atlantic. Adversing in Photominiature April 1899 Adversing in Photominiature Dec 1909 Adversing in Photominiature Feb 1900 The using will not be from Goerz catalogs, and a lot more from some other zoom lens/camera manufacturers, you can find at website. Excellent on the internet resource. These are usually both from the 1913 Goerz record. The three over from the 1940 collection The following picture can be a focus into Felipe s still left eyesight. You can compare with the entire picture made in a 4x5 unfavorable by clicking the thumbnail below.
The movie had been Tri-X chance as 320 ASA, aperture was comparable to y16, created 8 mins in at 23 Celsius. It provides an concept of Dagors capacity in making fine information. But if you would like to examine a serious knowledge that definitely verify it, go to: You will notice a Dagor 19 ins there, and the result one can still reach with a lens from 1905.