Protar 9/196 №60900 CZJ
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Protar 9/196 №60900 CZJ
Protar 9/196 №60900 CZJ Приобрел такой объектив. хотел выяснить на какой камере использовался такой раритет, но информации нигде не нашел. Может кто .нибудь подскажет
Re[fokuser]:
а зачем приобрели, если ничего не знаете? 8)
http://fotking.net/equipment/lens/carl-zeiss-jena-9196-protar
The photographic lens leapt forward in 1890 with the Zeiss Protar (Germany).[74] Paul Rudolph's Protar was the first successful anastigmat (highly corrected [for the era] for all aberrations, including properly for astigmatism) lens. It was scalable from f/4.5 portrait to f/18 super wide angle. The Protar was originally called the Anastigmat, but that descriptive term quickly became generic and the lens was given a fanciful name in 1900.[75]
The Protar is considered the first "modern" lens, because it had an asymmetric formula allowed by the new design freedom opened up by newly available barium oxide, crown optical glasses.[76] These glasses were invented by Ernst Abbe, a physicist, and Otto Schott, a chemist, (both Germany) in 1884, working for Carl Zeiss' Jena Glass Works. Schott glasses have higher refractive index than soda-lime crown glass without higher dispersion. The Protar's front achromat used older glass, but the rear achromat used high index glass.[77] Virtually all good quality photographic lenses since circa 1930 are anastigmat corrected. (The primary exceptions are deliberately "soft-focus" portrait lenses.)
Today's photographic lens state-of-the-art is apochromatic correction, which is, very roughly, twice as strict as anastigmatic.[78] However, such lenses require correcting for higher ordered aberrations than the original seven[79] with rare earth (lanthanum oxide) or fluorite (calcium fluoride) glasses of very high refractive index and/or very low dispersion of mid-twentieth century invention.[80][81][82] The first apochromatic lens for consumer cameras was the Leitz APO-Telyt-R 180mm f/3.4 (1975, West Germany) for Leicaflex series (1964, West Germany) 35mm SLRs.[83] Most professional telephoto lenses since the early 1980s are apochromatic.[84][85] Note, better-than-apochromat lenses are available for scientific/military/industrial work.[86]
http://fotking.net/equipment/lens/carl-zeiss-jena-9196-protar
The photographic lens leapt forward in 1890 with the Zeiss Protar (Germany).[74] Paul Rudolph's Protar was the first successful anastigmat (highly corrected [for the era] for all aberrations, including properly for astigmatism) lens. It was scalable from f/4.5 portrait to f/18 super wide angle. The Protar was originally called the Anastigmat, but that descriptive term quickly became generic and the lens was given a fanciful name in 1900.[75]
The Protar is considered the first "modern" lens, because it had an asymmetric formula allowed by the new design freedom opened up by newly available barium oxide, crown optical glasses.[76] These glasses were invented by Ernst Abbe, a physicist, and Otto Schott, a chemist, (both Germany) in 1884, working for Carl Zeiss' Jena Glass Works. Schott glasses have higher refractive index than soda-lime crown glass without higher dispersion. The Protar's front achromat used older glass, but the rear achromat used high index glass.[77] Virtually all good quality photographic lenses since circa 1930 are anastigmat corrected. (The primary exceptions are deliberately "soft-focus" portrait lenses.)
Today's photographic lens state-of-the-art is apochromatic correction, which is, very roughly, twice as strict as anastigmatic.[78] However, such lenses require correcting for higher ordered aberrations than the original seven[79] with rare earth (lanthanum oxide) or fluorite (calcium fluoride) glasses of very high refractive index and/or very low dispersion of mid-twentieth century invention.[80][81][82] The first apochromatic lens for consumer cameras was the Leitz APO-Telyt-R 180mm f/3.4 (1975, West Germany) for Leicaflex series (1964, West Germany) 35mm SLRs.[83] Most professional telephoto lenses since the early 1980s are apochromatic.[84][85] Note, better-than-apochromat lenses are available for scientific/military/industrial work.[86]
Re[peayq]:
Историю создания этого объектива я знаю. Меня интересует примерный год выпуска и камеры на которых он мог использоваться
