Canon 400mm f / 4 IZI NDI ma lens ovomerezeka ku Japan

Canon ili ndi patenti yatsopano yokhala ndi ma optics osakanikirana (DO) m'thupi la 400mm f / 4 IS DO super telephoto lens, yomwe ingatulutsidwe pamsika posachedwa.

Magwero odalirika adawulula kumayambiriro kwa chaka cha 2014 kuti uwu ndi chaka cha Canon chamagalasi, zomwe zikusonyeza kuti kampaniyo yalengeza zamagetsi zambiri chaka chonse.

Chaka sichinayambe mwachizolowezi. M'malo mwake, zakhumudwitsa kwambiri chifukwa magalasi oyamba adangowululidwa chakumapeto kwa Meyi. EF-S 10-18mm f / 4.5-5.6 IS STM ndi EF 16-35mm f / 4L IS USM zidawululidwa pa Meyi 13, pomwe mandala omaliza a kampaniyo ndi EF-M 55-200mm f / 4.5 -6.3 NDI STM.

Monga tafotokozera pamwambapa, ma optics atatu okha ndi omwe akhala akugwira ntchito mu 2014, ngakhale tili ndi lonjezo loti tidzawona ena ambiri pofika Chaka Chatsopano. Pakati pawo titha kukhala ndi ma lens atatu atsopano okhala ndi ma optic opepuka.

Popanda kuchitapo kanthu, mtundu waposachedwa wa DO wokhala ndi setifiketi ya kampani yaku Japan ndi Canon 400mm f / 4 IS DO lens, yomwe imatsata ma optics ena awiri ovomerezeka kale mu 2014.

Patent ya Canon 400mm f / 4 IS DO lens yafukulidwa ku Japan, ndikuwonetsa kuti optic iyi ikhoza kusintha mtundu wa 400mm f / 4 DO.

Canon 400mm f / 4 KODI ndi setifiketi yama lens yodziwika ku Japan

Zomwe zimachokera kudziko lakwawo kampani zatulukira patent ya mandala a 400mm okhala ndi f / 4. Magalasi adzadzazidwanso ndiukadaulo wokhazikika wazithunzi, womwe umathandiza mukamagwiritsa ntchito foni yayikulu kwambiri.

Mwinanso chofunikira kwambiri ndikuti mandala amakhala ndi gawo la "diffractive optics". Zomangamanga zamkati zimakhala ndi zidutswa 17 m'magulu 12 ndipo zimaphatikizira fluorite element.

Kuphatikizidwa kwa zinthu zingapo za DO kumachepetsa kukula ndi kulemera kwa mandala, ndikukweza mawonekedwe azithunzi pochepetsa kwambiri chromatic aberration.

Magalasi ena awiri a Canon DO ali ndi setifiketi posachedwa

Canon sigulitsa magalasi ambiri opangidwa ndi DO. 70-300mm f / 4.5-5.6 DO IS USM ndi 400mm f / 4 DO IS USM ndi mitundu yomwe ikupezeka pano.

Monga mukuwonera, zomalizazi mwina zikusinthidwa ndi mtundu watsopano, ngakhale sizikudziwika chifukwa chomwe watayira akupanga autofocus motor (USM).

Ndikofunika kudziwa kuti omwe anali ndi chilolezo cha DO omwe kale anali ndi 70-300mm f / 4.5-5.6 DO IS USM, yomwe idzalowe m'malo mwa mtundu wapano. Chowonjezera chachitatu pamndandanda wa DO chidzakhala mandala a 100-400mm f / 4.5-5.6 DO, malinga ndi zovomerezeka zaposachedwa.

Titha kuyembekezera kuti ma Optics awa azikhala ndi mphete yobiriwirayo. Komabe, iyi ikadali mphekesera chabe chifukwa chake tiyenera kudikirira zambiri chifukwa pomaliza kunena kuti akubwera kumsika posachedwa.