Canon 400mm f / 2.8 lens ine yakavakirwa-mukati 1.4x extender patent

Canon ine patenteni lenzi nyowani iyo inopa yakatarwa yakatarwa kureba ye400mm, nzvimbo yepamusoro ye f / 2.8, uye yakavakirwa-mukati extender iyo inowedzera iyo yekupedzisira kureba ne1.4x.

Sezvo isu tava kusvika kuPhotookina 2014, pane kutya kuti makambani haazoite zviziviso zvakawanda pamusoro pemwedzi inotevera.

Dhijitari kamera uye vagadziri velenzi vanogona kumirira kuti chiitiko chiratidze zvisikwa zvavo zvazvino. Kunyangwe izvi zvikazove zvechokwadi kana kwete, makambani anoramba achiramba achiisa patent zvigadzirwa zvavo.

Canon yanga ichinyatso shanda mudhipatimendi iri munguva dzichangopfuura. Nguva yekupedzisira patakataura nezve Canon lens patent, yaisanganisira iyo 400mm f / 4 ICHI CHIITI modhi. Ikozvino, isu tiri kutarisa zvakare kune 400mm lens, asi iyo inoratidza yakajeka kupenya kwe f / 2.8.

Canon 400mm f / 2.8 lenzi patent muJapan ine yakabatanidzwa 1.4x extender

Iyi ndiyo Canon EF 200-400mm f / 4L ISM lensi ine yakavakirwa-mukati 1.4x extender. Iyo kambani ine patenteni lenzi nyowani ine yakasanganiswa 1.4x extender, kunyange iyo nyowani vhezheni yemitambo yakatarisa kureba kwe400mm uye kuzarura kwe f / 2.8.

Iyo Canon 400mm f / 2.8 lens patent inouya nechishamiso chinonakidza. Iyi lens inoratidzira yakavakirwa-mukati extender ye1.4x, yakafanana neiyo inowanikwa muEF 200-400mm f / 4L IS USM lens, iyo yakaunzwa muna Chivabvu 2013.

Iyo EF 200-400mm f / 4L IS USM inonzi ndiyo yekutanga optic kuuya kuzara neyakaunganidzwa 1.4x extender. Kana ichinge ichishandiswa, ichapa kureba kwakatarisana kwe280-560mm pamutengo weimwe f-stop, zvichireva kuti kuzara kuzhinji kuchamira pa f / 5.6.

Kana Canon ikashandisa sisitimu yakafanana, ipapo iyo 400mm f / 2.8 lens ichapa kureba kwakatarisa kwe560mm uye kuzara kukuru kwe f / 4. Varidzi veEOS kamera vanogona kunge vachifara kwazvo kunzwa izvi, asi kungo patentera chigadzirwa hakuvimbise kuti kuchaburitswa pamusika.

Amazon parizvino iri kutengesa iyo Canon EF 200-400mm f / 4L ISM lensi ine yakavakirwa-mukati 1.4x extender ye mutengo wakakomberedza $ 11,800.

Canon inoramba iine patenting lenses ine yakatarisana kureba kwe400mm

Sezvambotaurwa pamusoro apa, Canon ine patent imwe 400mm lens munguva dzichangopfuura. Iyo vhezheni inouya izere neakanyanya kuzarura kwe f / 4 uye mufananidzo kudzikamisa tekinoroji.

Kupfuurirazve, iyo 400mm f / 4 vhezheni inosanganisira anokanganisa optics zvinhu, zvinoreva kuti mhando yemufananidzo ichavandudzwa, nepo huremu hwayo uye saizi ichizodzikiswa.

Canon's "gore remalensi" rinosanganisira matatu chete optics kusvika parizvino: iyo EF 16-35mm f / 4L IS USM, iyo EF-S 10-18mm f / 4.5-5.6 IS STM, uye iyo EF-M 55-200mm f / 4.5-6.3 IS STM.

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