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Statements

Subject Item
dbr:B4-mount
rdfs:label
B4-mount
rdfs:comment
The B4 lens mount was standardized in 1992 by the Broadcasting Technology Association (BTA) and is defined in BTA S-1005. This standard defines the physical mount, but also optical properties and some electrical connections. The B4 mount defines the sensor to have a diagonal size of 11 mm (a so-called 2/3" size sensor). The B4-mount is used by practically all 2/3" broadcast lenses and cameras (as of 2019).
foaf:depiction
n6:B4-mount_of_Fujinon_A13x4.5_lens.jpg n6:B4-mount_of_Panasonic_AK-HC1500G_camera.jpg
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dbc:Digital_photography
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52801281
dbo:wikiPageRevisionID
1043898769
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dbr:Nikon dbr:Standard-definition_television n5:B4-mount_of_Fujinon_A13x4.5_lens.jpg dbr:Chromatic_aberration dbr:Panasonic dbr:Betacam dbr:JVC dbr:Fujifilm dbr:Toshiba dbr:High-definition_video dbc:Digital_photography dbr:Aspect_ratio_(image) dbr:Association_of_Radio_Industries_and_Businesses dbr:Ikegami_Tsushinki dbr:Canon_Inc. dbr:Three-CCD_camera dbr:4K_resolution n5:B4-mount_of_Panasonic_AK-HC1500G_camera.jpg dbr:Hirose_Electric_Group dbr:Hitachi dbr:Sony
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n6:B4-mount_of_Fujinon_A13x4.5_lens.jpg?width=300
dbo:abstract
The B4 lens mount was standardized in 1992 by the Broadcasting Technology Association (BTA) and is defined in BTA S-1005. This standard defines the physical mount, but also optical properties and some electrical connections. The B4 mount defines the sensor to have a diagonal size of 11 mm (a so-called 2/3" size sensor). The B4-mount is used by practically all 2/3" broadcast lenses and cameras (as of 2019). Although the standard was set in 1992, the B4 mount already existed before 1980. The Sony BVP-300, produced from 1978, was possibly the first camera with a B4 mount. Further, all Sony Betacam cameras had a B4 mount. The BTA was formed by Japanese broadcaster NHK and included members from Canon, Fuji, Hitachi, Ikegami, JVC, Matsushita (Panasonic), Nikon, Sony and Toshiba. It was formed in the mid 1980s and set various standards for television. It is now part of ARIB, Association of Radio Industries and Businesses.
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wikipedia-en:B4-mount?oldid=1043898769&ns=0
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5535
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wikipedia-en:B4-mount