Hōʻike ʻia ʻo Canon EF 70-300mm f / 4.5-5.6 DO lentent lens i Iapana

Ua kālele ʻo Canon i nā aniani hou ʻelua ma Iapana, hoʻokahi me kahi kiko kiko lōʻihi 100-400mm a ʻo kekahi me kahi pae 70-300mm, akā ʻelua me kahi mea optr diffactive

Ua hoʻomaka ka "makahiki o nā aniani" ma Canon me ka hoʻolana o ka EF 16-35mm f / 4L IS USM a EF-S 10-18mm f / 4.5.5-6 IS STM nā hiʻohiʻona i ka waena o Mei.

Ke koi nei ka wili lono e hōʻike hou ʻia nā aniani hou i ka hopena o 2014, me kahi zoom ākea ākea me kahi puka f / 2.8 a me kahi pani no ka EF 100-400mm f / 4.5-5.6L IS.

I kēia manawa, ua hoʻokala ka ʻoihana i ʻelua mau hiʻohiʻona hou i Iapana a hiki i kekahi o lākou ke lilo i hope o ka mana 100-400mm.

ʻO nā aniani ʻelua hou-pio ka Canon EF 100-400mm f / 4.5-5.6 DO a me ka Canon EF 70-300mm f / 4.5-5.6 DO.

Canon EF 70-300mm f / 4.5-5.6 DO a me EF 100-400mm f / 4.5-5.6 DO mau aniani kaulahao i Iapana

ʻO ka patent no ke aniani Canon EF 70-300mm f / 4.5-5.6 DO. Loaʻa kahi mana o kēia aniani ma ka mākeke, akā ʻike ʻia ua hoʻoholo hope loa ka ʻoihana e hoʻololi i kēia k modelkohu.

Ua lono ʻia ʻo Canon e hoʻokuʻu kahi optic 100-400mm hou no kahi manawa lōʻihi loa. Ua ʻike ʻia kekahi mau palapala Sila i waena o kēia mau lono, akā aia kahi kahi no kahi mea ʻē aʻe.

Aia kēia mana i nā māhele 17 i hoʻokaʻawale ʻia i nā hui 11 me kahi mea fluorite a me kahi mea optic diffractive.

ʻO ke aniani Canon EF 70-300mm f / 4.5-5.6 DO hiʻohiʻona i kahi hoʻonohonoho like me nā mea 17 i nā hui 11 a me nā mea optic diffractive a diffractive.

He aha kahi ʻaoʻao optic diffractive?

Ke hoʻohana nei ʻo Canon i nā optic diffractive i kekahi o kāna aniani no kekahi mau makahiki. Hāʻawi ka ʻenehana DO i ka ʻoihana e hana i nā aniani kūlana kiʻekiʻe ʻoiai e mālama ana i ke kaupaona a me ka nui.

Hana ʻia nā mea diffractive multilayer e ka hoʻohui ʻana i ka uhi diffractive i nā aniani aniani. ʻO kēia ala, ʻoi aku ka liʻiliʻi a me ka māmā o nā aniani, ʻoiai e hoʻonui ana i ka maikaʻi o ke kiʻi.

ʻO ka hoʻonui ʻana o ka maikaʻi mai ka ʻoiaʻiʻo ʻaʻole e huehue nā mea DO i ka mālamalama, e like me nā hiʻohiʻona maʻamau. Ke hele a mālamalama ka mālamalama i kahi aniani, hana ia i ka aberration chromatic. Eia nō naʻe, i ka hoʻohana ʻana i nā optic diffractive i kahi aniani, ua hoʻopau ʻia ka aberration chromatic, wahi a Canon.

ʻO kahi laʻana o kahi aniani Canon Do

E like me ka mea i ʻōlelo ʻia ma luna, ua hoʻokuʻu ʻo Canon i nā aniani DO ma ka mākeke. ʻO kekahi o lākou ka Canon EF 70-300mm f / 4.5-5.6 DO IS USM aniani i kū ma kahi o ʻumi mau makahiki.

Ke hōʻike nei ka patent hou e hele aku ana kahi mea pani no kēia optic. Loaʻa ka hanauna o kēia manawa ma Amazon no kahi $ 1,400, kahi mea i koe he maikaʻi maikaʻi e noʻonoʻo ana i ka ʻoiaʻiʻo o ke kumu kūʻai o kēia hiʻohiʻona i hoʻonohonoho ʻia ma $ 2,300.

Eia hou, ʻaʻohe lā hoʻokuʻu, akā hiki i kahi hoʻolaha ke hana i kekahi manawa i kēia kauwela, no laila e lawe i kēia me kahi wahi o ka paʻakai no kēia manawa.