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The Canon EF 20 mm f/2.8 USM lens is an ultra-wide-angle prime lens produced by Canon for the EF lens mount. It features an ultrasonic motor. On a camera with an APS-C sensor the focal length is equivalent to 32 mm, and it is classified as a wide-lens. It features a ring-type USM motor featuring full-time manual and a fixed front element. The optical scheme of the lens includes eleven element in nine groups without any special lens. The performances are considered good, but not enough to compete with modern prime lenses; some zoom lenses from the Canon L series offer similar performances.

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  • Canon EF 20mm lens (en)
  • Canon EF 20mm (it)
  • Canon EF 20mm-objectief (nl)
  • 佳能 EF 20mm 鏡頭 (zh)
rdfs:comment
  • The Canon EF 20 mm f/2.8 USM lens is an ultra-wide-angle prime lens produced by Canon for the EF lens mount. It features an ultrasonic motor. On a camera with an APS-C sensor the focal length is equivalent to 32 mm, and it is classified as a wide-lens. It features a ring-type USM motor featuring full-time manual and a fixed front element. The optical scheme of the lens includes eleven element in nine groups without any special lens. The performances are considered good, but not enough to compete with modern prime lenses; some zoom lenses from the Canon L series offer similar performances. (en)
  • De Canon EF 20mm f/2.8 USM is een groothoekobjectief met een vaste brandpuntsafstand, gemaakt door de Japanse fabrikant Canon. Dankzij de EF-lensvatting is dit objectief geschikt voor de EOS-cameralijn van dezelfde fabrikant. (nl)
  • 佳能 EF 20mm 鏡頭是一系列由佳能公司生產的定焦鏡頭,一共有下列幾種型號: * EF 20mm F2.8 USM 當20mm鏡頭用於佳能數碼EOS系列的APS-C幅面機身(如佳能 EOS 550D)時,視角會變窄,其等效於全幅機身上的32mm視角(乘以系數1.6)。當用於APS-H幅面機身(如佳能 EOS-1D Mark IV)時,其等效於全幅機身的26mm視角(乘以系數1.3)。 (zh)
  • Canon EF 20mm f/2.8 USM è un obiettivo prodotto da Canon Inc.. Ha un attacco EF ed è quindi compatibile con tutte le macchine fotografiche reflex della serie EOS. È l'unico obiettivo EF con lunghezza focale di 20 mm, tale valore lo caratterizza come ultra grandangolare. Su un corpo dotato di sensore APS-C l'angolo di campo diviene equivalente a quello di un obiettivo 32 mm, classificato come grandangolare. È dotato di motore USM ad anello con full time manual, autofocus interno, elemento frontale fisso e lunghezza barilotto costante. Lo schema ottico prevede undici elementi in nove gruppi, senza alcuna lente speciale. Le prestazioni sono considerate buone in valore assoluto, ma non all'altezza delle ottiche fisse più recenti; alcuni obiettivi zoom serie L possono ben competere con questa l (it)
name
  • Canon EF 20 mm lens (en)
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  • http://commons.wikimedia.org/wiki/Special:FilePath/Canon-20mm_MG_2033.jpg
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  • June 1992 (en)
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  • The Canon EF 20 mm f/2.8 USM lens is an ultra-wide-angle prime lens produced by Canon for the EF lens mount. It features an ultrasonic motor. On a camera with an APS-C sensor the focal length is equivalent to 32 mm, and it is classified as a wide-lens. It features a ring-type USM motor featuring full-time manual and a fixed front element. The optical scheme of the lens includes eleven element in nine groups without any special lens. The performances are considered good, but not enough to compete with modern prime lenses; some zoom lenses from the Canon L series offer similar performances. (en)
  • Canon EF 20mm f/2.8 USM è un obiettivo prodotto da Canon Inc.. Ha un attacco EF ed è quindi compatibile con tutte le macchine fotografiche reflex della serie EOS. È l'unico obiettivo EF con lunghezza focale di 20 mm, tale valore lo caratterizza come ultra grandangolare. Su un corpo dotato di sensore APS-C l'angolo di campo diviene equivalente a quello di un obiettivo 32 mm, classificato come grandangolare. È dotato di motore USM ad anello con full time manual, autofocus interno, elemento frontale fisso e lunghezza barilotto costante. Lo schema ottico prevede undici elementi in nove gruppi, senza alcuna lente speciale. Le prestazioni sono considerate buone in valore assoluto, ma non all'altezza delle ottiche fisse più recenti; alcuni obiettivi zoom serie L possono ben competere con questa lente. (it)
  • De Canon EF 20mm f/2.8 USM is een groothoekobjectief met een vaste brandpuntsafstand, gemaakt door de Japanse fabrikant Canon. Dankzij de EF-lensvatting is dit objectief geschikt voor de EOS-cameralijn van dezelfde fabrikant. (nl)
  • 佳能 EF 20mm 鏡頭是一系列由佳能公司生產的定焦鏡頭,一共有下列幾種型號: * EF 20mm F2.8 USM 當20mm鏡頭用於佳能數碼EOS系列的APS-C幅面機身(如佳能 EOS 550D)時,視角會變窄,其等效於全幅機身上的32mm視角(乘以系數1.6)。當用於APS-H幅面機身(如佳能 EOS-1D Mark IV)時,其等效於全幅機身的26mm視角(乘以系數1.3)。 (zh)
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  • interiors, reportage, general (en)
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  • Ultrasonic motor (en)
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  • EW-75II (en)
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MSRP
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