Found an early Goerz Berlin Weit-Winkel 19x24 cm lens today. It looks to be a wide angle symmetrical design like a Lyneioskop though it is only marked Weit-Winkel. The serial number is quite early so I am interested in dating this lens. The serial number is 1570 making it quite early, from what I was able to find out on the web, say pre-1891 but would like to pin it down to the year it was made. If any forum member has any information, this would be appreciated. Geoff
Goerz made the first lens, an Universal-Aplanat, in 1888, That was followed by four more models introduced in 1890, Serie C through F, which were later renamed to Lynkeioskop.
In other words your lens was made no earlier than 1890,and before 1891. How precisely do you want to know? :-D
Thanks Ole, Pretty precise but would like to have a chart showing serial numbers with production dates. Also, could you describe what the four models C through F were? Best, GeoffOriginally Posted by Ole Tjugen
Serie C was f;6, Serie D f:8, Serie E f:10.7, and Serie F f:14.
Oh - I also found a mention of an Aplanat (not Universal-Aplanat) from 1889, in three seres, no further information given. That might be what your Weitwinkel is. Seems to have been pretty short lived, and may have been replaced by the new Universal-Aplanat series the following year.
Interesting. Mine is f16 max aperture, according to the wheel stop but this could be the Goerz system or the US System. I will need to check the focal length and max aperture to be certain. My guess is that it is approx. a 6 inch lens to cover 8x10.
I think you misread the engraving. It probably says 18x24.
Sounds like a series F (later marked as a Lynkeioskop - Goerz did this with the series III which became the Dagor). They had, in 1910, a size no. 1, focal length 15cm, Front lens diameter is 19mm - is marked as an F.15. This is a very squat lens. I can post a catalogue drawing - or the real thing size 3 - if there is any further doubt!
Hi Steve, Thanks for the info. It is clearly marked 19x24 and clearly f16. I did find it odd that is not 18x24. Please post a catalog drawing. I will try to get some pis of the lens posted. It is quite squat and has a shallow lens shade. I'm curious about the serial # sequence as 1570 seems quite early, especially if they didn't start their numbering system from 1. Some companies started from 1000 so this could be quite early, say from the first one or two years of production. I also dug out another early Goerz with serial # 44538 and marked C.P. GOERZ BERLIN. It has an iris aperture but no indicator numbers for the aperture. This is also a very strage lens. I think it is a two plus two but haven't checked the reflections yet but will and post my finidings along with approx focal length and max aperture.
I have a Rapid Paraplanat, with a serial number some 250 earlier than your 44538. Aperture scale is 6-12-24-48-96-192-384, where the former is 7.7 and the latter 64. Mine is marked the same. It's an Aplanat type (2+2) of 210mm FL.
Dan
as requested!
My no. 3 is much later - past 100,000 - so the lens hood was enamelled black.
Ole,
Is the "Serie" nomenclature consistent among German manufacturers? I've got a Busch Rapid Aplanat Serie D that is f8.
Chris
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