ICanon 400mm f / 4 INGABE ilensi enamalungelo obunikazi eJapane

ICanon inelungelo lobunikazi lens entsha enama-optic ahlukanisayo (DO) emzimbeni we-400mm f / 4 IS DO super telephoto lens, engakhishwa emakethe kungekudala.

Imithombo ethembekile iveze ekuqaleni kuka-2014 ukuthi lo kuzoba unyaka wama-Canon wamalensi, uphakamisa ukuthi inkampani izomemezela izinto eziningi zokukhanya unyaka wonke.

Yebo, unyaka awuqalanga ngendlela ethembisayo. Eqinisweni, kube ukudumala okuphelele njengoba amalensi okuqala embulwa kuphela maphakathi noMeyi. I-EF-S 10-18mm f / 4.5-5.6 IS STM ne-EF 16-35mm f / 4L IS USM ivezwe ngoMeyi 13, kanti ilensi yokugcina yenkampani yi-EF-M 55-200mm f / 4.5 -6.3 IS STM.

Njengoba kushiwo ngenhla, mithathu kuphela ama-optics amasha asebenze ngokusemthethweni ngo-2014, yize sisenaso isithembiso sokuthi sizobona abanye abaningi ngo-Eva Wonyaka Omusha olandelayo. Phakathi kwazo singaba namalensi amathathu amasha afika agcwele ukukhanya okuhle.

Ngaphandle kokuqhubeka, imodeli yakamuva ye-DO enelungelo lobunikazi yinkampani ezinze eJapan yi-Canon 400mm f / 4 IS DO lens, elandela amanye ama-optics amabili e-DO anelungelo lobunikazi ekuqaleni kuka-2014.

Ilungelo lobunikazi lelensi le-Canon 400mm f / 4 IS DO selitholakele eJapan, okukhomba ukuthi le optic ingathatha indawo yemodeli ekhona ye-400mm f / 4 DO.

ICanon 400mm f / 4 INGABE ilungelo lobunikazi lelensi litholakale eJapan

Imithombo ezweni lasekhaya lenkampani ithole ilungelo lobunikazi lelensi engu-400mm enokuvula okuphezulu kwe-f / 4. Ilensi izophinde igcwale ubuchwepheshe bokuzinza besithombe obakhelwe ngaphakathi, obusizo impela lapho ubhekene nemodeli ephezulu kakhulu yocingo.

Mhlawumbe imininingwane ebaluleke kakhulu ukuthi ilensi inento eyakhelwe ngaphakathi ye- "diffractive optics" element. Ukwakhiwa kwangaphakathi kunezingcezu eziyi-17 emaqenjini ayi-12 futhi kufaka ne-fluorite element.

Ukwengezwa kwento enezingqimba eziningi ze-DO kuzonciphisa usayizi nesisindo selensi, ngenkathi kuthuthukiswa ikhwalithi yesithombe ngokusika ngokweqile ukwehliswa kwe-chromatic.

Amanye amalensi amabili we-Canon DO anelungelo lobunikazi muva nje

ICanon ayithengisi amalensi amaningi asuselwa ku-DO. I-70-300mm f / 4.5-5.6 DO IS USM ne-400mm f / 4 DO IS USM amamodeli akhona angathengwa njengamanje.

Njengoba ukwazi ukubona, lesi sakamuva kungenzeka sithathelwe indawo imodeli entsha, noma kungacaci ukuthi kungani ilahlekelwe yimoto ye-ultrasonic autofocus (USM).

Kuyafaneleka ukukhomba ukuthi i-DO duo enelungelo lobunikazi ngaphambilini ibifaka i-70-300mm f / 4.5-5.6 DO IS USM, ezongena esikhundleni senguqulo yamanje. Ukwengezwa kwesithathu ochungechungeni lwe-DO kuzoba ilensi engu-100-400mm f / 4.5-5.6 DO, ngokusho kwamalungelo obunikazi asanda kushicilelwa.

Singalindela ukuthi le optics ye-DO ifake leyo ndandatho eluhlaza okwehlukile kubo. Kodwa-ke, lokhu kuseyihlebezi nje ngakho-ke kuzofanele silinde eminye imininingwane ngoba siphetha ngokuthi nakanjani bayeza emakethe kungekudala.