Sigma tso nws thawj 120-300mm f / 2.8 lens

raws li Sigma, lub 120-300 hli f / 2.8 DG OS HSM super-telephoto zoom lub lens yog nws thawj kis las lub lens uas yog qhov sib kis thiab muab cov aperture siab tas li rau tib lub sijhawm. Ntxiv mus, nws firmware yog neeg siv tau-customizable ntawm USB ntsaws cov kab nrib.

cov tas li f / 2.8 aperture txhais ua ntu nrawm nrawm nrawm dua, yog li ua tau zoo dua ntawm cov khoom txav nrawm, ntawm txhua qhov ntev focal. Sigma ua lub lens tshiab kom xa cov kev ua tau zoo thiab ua kom yooj yim. Lub aperture nrawm yuav muaj nyob thoob plaws qhov nce txog ntau yam, yog li cov kws thaij kis las yuav twv yuav raug xaiv qhov optic no.

Dhau li ntawm cov 120-300mm focal ntev, nws kuj tshaj tawm qhov muaj peev xwm los teeb tsa nws ntawm lub software muab. Nws yuav siv cov “USB DOCK”Thev naus laus zis. Los ntawm kev siv software tshwj xeeb (Sigma Txawj Zoo Pro), cov kws yees duab tau hloov lub lens ntawm firmware chaw rau zoo customization. Qhov no txhais tau tias Sigma 120-300mm f / 2.8 DG OS HSM tuaj yeem yog yoog raws tus kws yees duab cov kev xav tau.

Lub Sigma 120-300mm f / 2.8 DG OS HSM lens yog thawj tus qauv ntawm tuam txhab kev ua kis las tshiab-kab.

Lo ntsiab muag sib xyaw ua ke ob FLD ("F" Qis Kev Nyuaj Siab) cov iav uas xa ua yeeb yam sib npaug ntawm fluorite. Lwm SLD (Tshwj Xeeb Tsawg Kev Nyuaj Siab) iav cov ntawv them nyiaj rau kev ua txhaum kev muaj xim. Nws muaj sab hauv zooming thiab tsom, yog li lub lens yeej tsis hloov nws loj thiab pem hauv ntej lub lens tsis tig. Txhua yam lim tau txuas rau nws, txij li ntawd los pem hauv ntej ib sab ntawm lub lens yog tsau.

Sigma 120-300mm f / 2.8 DG OS HSM ua tau kom ruaj khov, muab hmoov av-ntawv pov thawj thiab txaws pov thawj qhov chaw txhua qhov muaj cov pob qij txha, xws li cov mount txuas, ntiv nplhaib phau ntawv, lub nplhaib zoom, lossis lub pob ntawd hloov.

Tsaug rau nws HSM (Hyper Sonic Lub Cev Muaj Zog) kev sib xyaw ua ke, lub lens xa tuaj kev kub ceev, ntsiag to thiab npliag AF (Pib Tshaj Plaws). Lwm yam tshwj xeeb zoo tshwj xeeb yog nws cuaj li tuaj puag ncig-diaphragm los yog lub tooj dag ua bayonet mount.

Qhov super-telephoto zoom lens ua rau DG tsim, uas txhais tau tias nws tuaj yeem npog tag nrho cov duab kab ntsig cov duab. Txawm li cas los xij, nws yuav tau sib xws nrog qee APS-C DSLRs thiab yuav muab 35mm focal ntev sib npaug ntawm 180-450mm.

Sigma 120-300mm f / 2.8 DG OS HSM muaj nyob ntawm qhov kev txiav txim ua ntej ntawm $ 3,599 rau Canon, Sigma, thiab Nikon DSLR koob yees duab.