| 词条 | Zeiss Biogon |
| 释义 |
| name =Biogon | scheme =Bertele-Zeiss Biogon (1951, f4.5).svg | year =1951 | author =Ludwig Bertele | elements =8 | groups =5 | aperture =4.5 }} Biogon is the brand name of Carl Zeiss for a series of photographic camera lenses, first introduced in 1934. Biogons are typically wide-angle lenses. HistoryThe first lens branded Biogon (2.8 / 3.5 cm, unbalanced) was designed in 1934 by Ludwig Bertele,[1] then assigned to Zeiss Ikon Dresden, the Contax created as a modification of the then Sonnar. It was developed by Carl Zeiss in approximately 1937 and manufactured in Jena, then a redesign in Oberkochen. In 1951, a new Biogon with a 90° angle of view (Super Wide Angle) was designed, also by Ludwig Bertele.[2] The advent of the Biogon opened the way to extreme wide-angle lenses. The first examples were produced from 1954 as the 4.5 / 21 mm for Contax, in 1954, 4.5 / 38 mm for Hasselblad Super Wide, and from 1955 to 1956 as the 4.5 / 53 mm and 4.5 / 75 mm for the Linhof. The original patent spanned three different variants, each with a different maximum aperture: {{f/}}6.3, {{f/}}4.5, and {{f/}}3.4 lenses.[2] ExamplesSince their introduction, lenses branded Biogon are usually approximately symmetrical ("semi-symmetrical") wide-angle design with a usable angle of view of 90° or more. At 90° the focal length is approximately half as long as the format's diagonal. Well known camera manufacturers like Hasselblad have or had Biogon derived lenses to offer. The lenses branded Super-Angulon (sold by Schneider Kreuznach and Leica Camera) are based on the construction of the Biogon.
Other Zeiss lenses include the Triotar, Biotar, Biometar, Tessar, Planar, Sonnar, {{Interlanguage link multi|Distagon|de}}, {{Interlanguage link multi|Flektogon|de}}, Hologon, Topogon, Kipronar, Prokinar. See also
References1. ^1 {{cite patent |country=US |number=2084309 |inventor=Bertele, Ludwig |assign=Zeiss Ikon AG |pridate=16 June 1934 |appdate=6 January 1936 |gdate=22 June 1937 |status=Grant |title=Photographic lens system |class=G02B9/34 |url=https://patents.google.com/patent/US2084309A/}} 2. ^1 {{cite patent |country=US |number=2721499 |inventor=Bertele, Ludwig |assign=Bertele, Ludwig |pridate=12 July 1951 |appdate=5 July 1952 |gdate=25 October 1955 |status=Grant |title=Five component wide-angle objective |class=G02B13/04 |url=https://patents.google.com/patent/US2721499A/}} Bibliography
|title=From the series of articles on lens names: Distagon, Biogon and Hologon |first=H. Hubert |last=Nasse |work=Camera Lens Blog (CLB) |edition=41st |date=December 2011 |publisher=Carl Zeiss AG, Camera Lens Division |url=http://blogs.zeiss.com/photo/en/wp-content/uploads/2011/12/en_CLB41_Nasse_LensNames_Distagon.pdf |quote=(NB. German: ) |accessdate=2013-06-08}} External links
2 : Photographic lens designs|Zeiss lenses |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。