Canon EF 400mm f / 4 DO IS USM II mandala amakhala ovomerezeka

Canon ikukondwerera zaka 75 zakapangidwe kabwino ndi kukhazikitsidwa kwa mandala a EF 400mm f / 4 DO IS II USM, makina opepuka kwambiri komanso ophatikizika kwambiri ku Photokina 2014.

Magalasi awa akhala akunenedwa kwa nthawi yayitali, koma zinthu zabwino zimabwera kwa iwo omwe amadikirira. Canon EF 400mm f / 4 DO NDI ma lens a USM II tsopano ndiwovomerezeka, mwachilolezo cha chochitika cha Photokina 2014, ndipo imalonjeza kupereka mawonekedwe opambana kwambiri phukusi laling'ono komanso lopepuka.

Makina a Canon EF 400mm f / 4 DO IS II USM awululidwa kwa makamera a EOS DSLR kuti apereke mawonekedwe apamwamba poyerekeza ndi omwe adalipo kale.

Canon yalengeza mandala atsopano ndi makina osokonekera a Optics: EF 400mm f / 4 DO IS USM II

M'badwo wachiwiri mandala a 400mm f / 4 DO adzapereka chithunzi chabwino poyerekeza ndi chomwe chidatsogola. Komabe, kukula kwake kumafanana mofananako ndi mtundu woyamba, kotero ogwiritsa ntchito sadzachita khama powombera ndi mankhwalawa.

Canon EF 400mm f / 4 DO IS USM II mandala tsopano ali ndi mawonekedwe azinthu ziwiri zatsopano zosanjikiza. Ndondomeko yamagetsi ya mandala yasinthidwa kuti izitha kuyika zinthu zatsopano za DO mkati mwamapangidwe ake amkati. Mwanjira imeneyi, kuyaka kumachepa kwambiri, makamaka pamene ojambula akujambula zithunzi za anthu obwerera m'mbuyo.

Ukadaulo wa "diffractive optics" ulinso wabwino pochepetsa chromatic aberration, chifukwa chake mawonekedwe azithunzi adzakhala okwera kwambiri, osangalatsa ogwiritsa ntchito.

Canon EF 400mm f / 4 DO IS USM II mandala ali pano kuti apereke chithunzi chabwino kwambiri

Magalasi atsopano a Canon amagwiritsa ntchito chinthu chosakanikirana ndi mafunde a Ultra Low Disersion (UD), chomwe chidzakonza zolakwika zam'maso. Kuphatikiza apo, mandala a EF 400mm f / 4 DO IS USM II ndi okutidwa ndi SWC, kupititsa patsogolo kuwombera kuti apange kuwombera kwapamwamba kwambiri.

Kampani yochokera ku Japan idawonjezeranso kukhazikika kwazithunzi pazogulitsazo, zomwe zimapereka mpaka ma f-stop anayi okonza.

Dongosolo la autofocus limayendetsedwa ndi mota wopanga (USM), kotero kuyang'ana kumangokhala kosalala komanso chete.

Zambiri zakupezeka

Canon yakhazikitsa dongosolo la DO chifukwa limapereka maubwino angapo pamitundu yonse yamawonekedwe. Kuphatikiza pa mawonekedwe abwino azithunzi, mandala a EF 400mm f / 4 DO IS USM II ali pafupifupi 50% opepuka kuposa EF 400mm f / 2.8 IS II USM.

Chogulitsachi chatsopano chimalemera magalamu 2,100 / ma ola 74.1, pomwe chimayeza mainchesi 128mm / 50.4-mainchesi ndi 232.7mm / 91.6-mainchesi kutalika.

Monga tafotokozera pamwambapa, kukula ndi kulemera kocheperako kumachitika chifukwa cha mawonekedwe owoneka bwino. Choyipa chitha kuwerengedwa ngati mtengo, popeza ma lens a Canon EF 400mm f / 4 DO IS USM II atulutsidwa mu Novembala pafupifupi $ 6,899.

Ogula omwe angakhalepo amatha kuyitanitsa chamawonedwe kudzera pa Amazon pamtengo womwe tatchulawu.