Canon EF-S 20mm f / 2.8 STM lens teeb tsa rau APS-C DSLRs

Canon tau tshaj tawm EF-S 20mm f / 2.8 STM qhov dav dav rau lub koob npe nrov rau lub tuam txhab EOS DSLR koob yees duab nrog APS-C-qhov loj me duab duab.

Ntau qhov muag tau pom tseeb nyob rau lub sijhawm nyuam qhuav dhau los ntawm cov tuam txhab ntau, suav nrog Canon. Lub ntiaj teb cov koob yees duab thiab cov chaw muag khoom loj tshaj plaws yuav tsis muab qhov kev tsim kho khoom lag luam tas mus li thiab cov ntawv tshiab patent yog cov lus pov thawj rau qhov tseeb no.

Canon EF-S 20mm f / 2.8 STM lens tau muaj nws txoj cai patent pom zoo hauv Nyij Pooj thiab nws tshaj tawm nws tus kheej ua qhov dav-dav dav optic rau DSLRs nrog APS-C sensors uas yuav xa lub teeb pom kev zoo rau cov duab qes qes.

Qhov no yog tus tsim sab hauv ntawm Canon EF-S 20mm f / 2.8 STM lens, raws li pom hauv nws daim ntawv thov patent.

Canon EF-S 20mm f / 2.8 STM lens patent nrhiav tsis tau hauv Nyij Pooj

Lub lens dav dav tshiab tau tso tawm los ntawm Canon ntawm qee kis tom ntej. Cov khoom nyob rau hauv nqe lus nug tau patented hauv Nyij Pooj thiab nws zoo li muaj 20mm f / 2.8 optic tsim rau EF-S-mount DSLRs.

Nws yuav muab 35mm focal ntev sib npaug ntawm 32mm thaum ntsia saum DSLR koob yees duab nrog APS-C-qhov loj qhov me duab. Nws lub aperture yog qaim txaus rau sab hauv tsev, txoj kev thiab kev thaij duab toj roob hauv pes uas tsis tshua muaj teeb pom kev zoo, yog li nws tuaj yeem dhau los ua ntau hom teeb ci rau EOS 7D Mark II cov neeg siv.

Lub tuam txhab Nyij Pooj tau tshaj tawm f / 2.8 STM qhov dav dav rau lub koob npe nrov rau EOS-series DSLRs nrog APS-C sensors. Txawm li cas los xij, cov khoom lag luam muaj focal ntev ntawm 24 hli thiab nws yog pancake unit ua tsaug rau nws ntev ntawm 22.8mm / 0.9 nti. Hmoov tsis zoo, daim ntawv pom zoo Canon EF-S 20mm f / 2.8 STM lub lens yuav tsis yog cov qauv pancake raws li nws daim ntawv thov patent hais tias nws ntev li ntawm 64mm / 2.51 nti. EF-S 24 hli f / 2.8 STM pancake lens yog muaj nyob ntawm Amazon rau tus nqi qis dua $ 150.

Qhov dav dav dav no lub kaum ntsej muag yuav muab cov du, uas ntsiag to tsis pom kev

Canon tau foob rau tsab cai patent rau Lub Kaum Ob Hlis 6, 2013. Lub chaw tswj txoj cai hauv Nyij Pooj tau pom zoo nws thaum Lub Rau Hli 18, 2015. Lub dav-dav dav los nrog Stepping Tsav uas tau hais tias kom xa cov ntsiag to thiab du autofocusing.

Raws li ib txwm muaj, peb yuav tsum nco ntsoov koj tias daim ntawv tso cai khoom lag luam tsis txhais tau tias cov khoom lag luam yuav nthuav tawm sai sai tom ntej lossis xyoo tom ntej no. Cov tuam txhab sim sim txhawm rau saib seb cov khoom puas tsim nyog rau kev ua lag luam, yog li tsis txhob cia koj cov pa ua ntej tshaj tawm Canon EF-S 20mm f / 2.8 STM lens.

Lub caij no, nyob nrog Camyx ntxiv rau kev tshaj xov xwm thiab cov lus xaiv los ntawm lub thev naus laus zis ntiaj teb!