I-Nikon 24-70mm f / 2.8 PF VR lens patent iveziwe

UNicon unelungelo lobunikazi lelensi entsha engu-24-70mm f / 2.8 yamafreyimu agcwele amakhamera we-DSLR, ehlukile kumamodeli akhona njengoba eza ne-Phase Fresnel element.

ICanon yaziwa ngokwenza ama-lens ngobuchwepheshe be-Diffractive Optics. Inkampani ezinze eJapan isebenzisa into ye-DO kokunye kokukhanya kwayo ukunciphisa ubungako nesisindo selensi, ngenkathi ikhulisa ikhwalithi yesithombe. Kodwa-ke, ubuchwepheshe obunjalo buyabiza, ngakho-ke yingakho busetshenziswa kuma-lens ambalwa.

Ekuqaleni kwe-2015, UNikon uthathe isinqumo sokulandela ukuhola kukaCanon ngokwethula ilensi enohlobo lwayo lobuchwepheshe be-DO. Ibizwa ngePhase Fresnel futhi iyatholakala kwi-lens ephezulu ye-AF-S Nikkor 300mm f / 4E PF ED VR okubiza cishe ama- $ 2,000.

Kubukeka sengathi uNikon uhlela ukuletha ama-optics amaningi eSigaba Fresnel emakethe, njengoba inkampani inelungelo lobunikazi le-24-70mm f / 2.8 lens eza ligcwele ubuchwepheshe obunjalo.

Leli ilungelo lobunikazi lelensi yeNikon 24-70mm f / 2.8 PF VR, okulindeleke ukuthi itholakale ngasekupheleni konyaka.

I-Nikon 24-70mm f / 2.8 PF VR lens patent ivela e-USPTO

I-Nikon 24-70mm f / 2.8 PF VR lens patent itholakele e-US Patent kanye ne-Trademark Office. Yafakwa ngoMeyi 2014 futhi yanikezwa ngoSepthemba 2014.

Uhlelo lokusebenza lwe-patent luchaza ilensi yokusondeza ejwayelekile enokuvuleka okuphezulu okungapheli kwe-f / 2.8 kulo lonke uhla lokusondeza. Ilensi yakhelwe ukumboza izinzwa zesithombe esigcwele futhi ifaka ubuchwepheshe obakhelwe ngaphakathi bokuncipha kwe-Vibration.

Ngaphezu kwalokho, i-lens isebenzisa i-Phase Fresnel element, ezokwehlisa ubukhulu nesisindo sayo ngenkathi iphakamisa ikhwalithi yesithombe, njengoba kushiwo ngenhla.

UNikon angakhipha ilensi yesibili yeSigaba seFresnel ekupheleni kuka-2015

Le modeli ayilindelekile ukuvela emakethe ngaphambi kokuphela kuka-2015. Kodwa-ke, abathwebuli bezithombe bakaNikon bazolinda impela, njengoba abaningi bekholelwa ukuthi le modeli ingaba ilensi "okumele ube nayo" ngenxa yokwengezwa kwezinhlelo zombili zeVR nePF.

Ilensi yamanje engu- 24-70mm f / 2.8 ayinayo enye yazo futhi itholakala cishe ngama- $ 1,700 e-Amazon. Lokhu kusho ukuthi inguqulo entsha ingabiza kakhulu kunemodeli ekhona.

Ngaphezu kwe-300mm f / 4E PF ED VR esivele imenyezelwe kanye ne-24-70mm f / 2.8 PF VR ezayo, uNikon unelungelo lobunikazi lenye i-Phase Fresnel lens. Imodeli engu-200-400mm f / 4-5.6 yayinelungelo lobunikazi emuva ngo-2012.

Le lens enkulu yokusondeza amafoni akulindelekile ukuthi ivele emakethe kungekudala. Noma kunjalo, akufanele sifinyelele kuziphetho ngalesi sikhathi, ngakho-ke thatha yonke le mininingwane ngengcosana kasawoti.