Sigma idakhazikitsa lens yake yoyamba ya 120-300mm f / 2.8

Malinga ndi Sigma, 120-300mm f / 2.8 DG OS HSM super-telephoto zoom lens ndi gawo lake loyamba la Sports line lens lomwe limasunthika ndipo limapereka kutseguka kosasintha nthawi yomweyo. Kuphatikiza apo, firmware yake ndiyosavuta kugwiritsa ntchito kudzera pa USB Dock.

The nthawi zonse f / 2.8 kabowo kamamasulira msanga wa shutter mwachangu, motero kuwongolera bwino zinthu zoyenda mwachangu, pamtunda uliwonse. Sigma adapanga mandala atsopanowo kuti athe kupanga magwiridwe antchito komanso kusinthasintha. Kutsegulira mwachangu kudzapezeka m'malo osiyanasiyana, kotero ojambula amasewera adzayamikiranso izi.

Kuwonjezera pa 120-300mm kutalika kwake, imanenanso kuthekera kokukhazikitsa kudzera pa pulogalamu yomwe yaperekedwa. Zimagwiritsa ntchito "USB Doko”Ukadaulo. Pogwiritsa ntchito pulogalamu yapadera (Kukhathamiritsa kwa Sigma Pro), wojambula zithunzi amatha sinthani firmware ya mandala makonda kuti musinthe makonda anu bwino. Izi zikutanthauza kuti Sigma 120-300mm f / 2.8 DG OS HSM itha kukhala kusinthidwa mogwirizana ndi zosowa za wojambula zithunzi.

Maselo a Sigma 120-300mm f / 2.8 DG OS HSM ndiye mtundu woyamba wa mzere watsopano wamakampani watsopano wa Sports.

Magalasiwa amaphatikizira magalasi awiri a FLD ("F" Low Disersion) omwe amatulutsa mawonekedwe ofanana ndi fluorite. Galasi ina ya SLD (Special Low Disersion) imalipira kuwonongeka kwamitundu. Ili ndi mawonekedwe amkati ndikuwunika, motero mandala sasintha kukula kwake ndi mandala am'mbuyo samazungulira. Fyuluta yamtundu uliwonse imatha kulumikizidwa nayo, chifukwa mbali yakutsogolo ya mandala yakhazikika.

Sigma 120-300mm f / 2.8 DG OS HSM yamangidwa kuti ikhale yolimba, yopereka umboni-fumbi ndi kuwaza umboni ziwalo kulikonse komwe kulumikizana, monga cholumikizira chaphiri, mphete yamanja, makulitsidwe, kapena kusintha.

Chifukwa cha HSM (Hyper Sonic Motor) kuphatikiza, mandala amapereka liwilo lalikulu, chete ndi yeniyeni AF (Kuyang'ana Kwambiri). Zina mwazidziwitso zazikulu ndi masamba asanu ndi anayi chozungulira kapena zamkuwa zopangidwa phiri la bayonet.

Makina opanga makanema ojambula pamanja kwambiri amakhala ndi dzina la DG, zomwe zikutanthauza kuti imatha kutulutsa masensa azithunzi. Komabe, imagwirizana ndi ena APS-C DSLRs ndipo ipereka kutalika kwa 35mm kofanana ndi 180-450mm.

Sigma 120-300mm f / 2.8 DG OS HSM ikupezeka pamtengo woyitanitsa $ 3,599 wamakamera a Canon, Sigma, ndi Nikon DSLR.