Gorez Hypergon Doppel Seriex X No. 000a F: 75mm Lens
Large Format Wide Angel Antistigmatic
This lens is excellent for a very wide field of view it coveres a film plate size of 8x10" and requires a lens board hole size of 2 7/16"
This sale is for a Gorez Ultra Wide angel Large Format lens as described above.
This is a rare lens and usually not found in this excellent condition
It is in excellent operating condition with rotating star. Field of view is 135 degrees
Great lens to photograph Rocket Launches, Engines firing on test stands, launch towers and surrounding facilities, etc.
The owner will consider offers on this lens.
The Hypergon is one of those "legendary" lenses which are relatively much more expensive today than when they were new - almost a century ago. In terms of "real money" - average worker hourly pay, or something, the price is about the same now... The fully equipped 60mm cost 120 Mark in 1910, which was a considerable sum.
They were made in 60mm, 75mm, 90mm, 120mm, 150mm and 200mm focal lengths. Two versions were available: with or without the "star shutter". This was a rotating star-shaped aperture thingy which when used for part of the exposure worked as a center grad - to combat the light falloff towards the corners.
Without the starshutter, the lens gave good results over a 110° field of coverage; with the starshutter in use this was extended to 135°. that mens that the 60mm was designed to cover a 300mm field - or 8x10" film size.
Since the lens is completely symmetrical, there is no geometric distortion. The construction is fairly simple with only two deeply curved elements, so resolution won't be as good as more complex modern lenses. But no modern lens has a 135° coverage, so there isn't really any alternative if that's what you need.
"The Hypergon has for several years held a unique place among wide-angle lenses on account of its incomparable covering power. It is a symmetrical double anastigmat, consisting of two very thin hemispherical single glasses. Astigmatism, spherical aberration and curvature of field are completely corrected, and the definition is sharp to the very edges of the plate. The chromatic aberration is not corrected, but is eliminated after focusing by the use of the smaller diaphragm stop, f/31. The symmetrical design of the Hypergon insures complete freedom for distortion of straight lines. The diminution of light toward the margin of the image, unavoidable in a lens cutting such an extraordinary angle, is corrected by an ingenious device in the form a star diaphragm, which is rotated in front of the lens, by means of a bulb and tube attachment, during the exposure. (they are talking about compressing a rubber air bulb and using the air to spin the star)
The Hypergon is a special lens for wide-angle interiors, landscape, architectural and panoramic pictures, and it should not be purchased with the idea that it can be sued as a lens for general photography. It cannot be fitted to between-the-lens shutters. ( This description from Cameraquest.com)
Here is a lens that was modified for Sony Nex cameras. Aricile in Japanese
|Is this item covered by the United States Munitions List (USML)?||No|
|Product has Conformance Documentation||No|
|Product has Inspection / Test Reports||No|
|Product has Traceability Documentation||No|
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