Prime Lens yog dab tsi? Txhua Yam Koj Yuav Tsum Paub

Cov txheej txheem:

Prime Lens yog dab tsi? Txhua Yam Koj Yuav Tsum Paub
Prime Lens yog dab tsi? Txhua Yam Koj Yuav Tsum Paub
Anonim

Ib lub lens tseem ceeb yog lub lens ntev ntev, uas txhais tau tias nws tsis tuaj yeem zoom lossis tawm. Kawm cov ntsiab lus ntawm lub lens prime thiab seb cov lo ntsiab muag no piv rau cov lo ntsiab muag zoom li cas.

Prime Lens yog dab tsi?

Nrog lub ntsej muag zoom, koj tuaj yeem kho qhov ntev ntawm lub ntsej muag los ntawm kev txav iav lo ntsiab muag hauv lub lens lub cev, feem ntau yog siv lub tes tsho tig lossis zawv zawg ntawm lub tes tsho sab nraud ntawm lub lens. Lub lens prime, ntawm qhov tod tes, muaj qhov ntev focal ntev. Lub npe prime yog los ntawm qhov ntev focal ntev, tsuas yog ib qho kev ntsuas. Lub lens tseem ceeb tuaj yeem yog lub kaum sab xis dav, ib txwm, lossis telephoto.

Ib tus qauv zoom lens yuav suav nrog qhov ntsuas qhov ntev ntawm qhov focal ntev ntawm 24 hli thiab 70 hli. Lub lens ruaj ruaj tsuas muaj ib qho kev ntsuas, xws li 50 hli. Thaum lub lens zoom tuaj yeem hloov kho kom ntes ntau qhov chaw lossis tsom mus rau cov ntsiab lus ze ze, lub lens tseem ceeb tsis tuaj yeem. Yog li vim li cas koj thiaj xav tau lub lens prime?

Image
Image

Prime Lenses vs. Zoom Lenses

Txawm hais tias qhov yooj yim ntawm cov lo ntsiab muag zoom, cov lo ntsiab muag tseem ceeb tseem nrov vim lawv cov kav ntev thiab tus nqi qis. Prime lo ntsiab muag kuj ua tau zoo dua nyob rau hauv lub teeb qis thiab yog lub teeb yuag.

Qee tus kws yees duab hais tias cov lo ntsiab muag tseem ceeb tsim cov duab zoo dua thiab. Txawm li cas los xij, cov pov thawj qhia tau hais tias lub koob yees duab zoo tshaj plaws tuaj yeem ua tiav qhov tseem ceeb tib yam kev ntsuas ntawm qhov pom kev ntse, txawm tias lawv yog thawj lossis zoom lo ntsiab muag.

kab hauv qab

Prime lo ntsiab muag tuaj hauv cov qauv yooj yim, suav nrog cov iav tsawg thiab pab pawg dua li lub lens zoom. Vim tsis muaj qhov yuav tsum tau hloov kho, tsis xav tau kev siv lub cev nyuaj. Lub lens muaj tsawg dua qhov tawg. Qhov no kuj txo cov nqi tsim khoom, tso cai rau cov neeg tsim khoom siv cov khoom siv kho qhov muag kom zoo ntawm tus nqi qis. Nws kuj yog feem ntau yooj yim dua los ntxuav cov lo ntsiab muag prime dua li cov lo ntsiab muag zoom.

Prime Lenses in low-light Performance

Nrog cov qauv tsim yooj yim ntawm cov lo ntsiab muag tseem ceeb, cov neeg tsim lub lens tuaj yeem suav nrog qhov sib piv qhov loj tshaj qhov apertures, ua kom cov teeb pom kev tuaj yeem ncav cuag lub sensor lossis zaj duab xis. Lenses nrog qhov dav siab tshaj plaws apertures feem ntau tau piav qhia tias yog lo ntsiab muag ceev los ntawm kev yees duab aficionados. Cov lo ntsiab muag no tso cai rau luv shutter speeds nyob rau hauv lub teeb qis, muab sharpness, clarity, thiab yooj rau tus kws yees duab.

Thaum lub koob yees duab zoom yuav suav tau nrawm nrog qhov siab tshaj plaws ntawm f / 2.8, cov kws tshaj lij 50 hli prime lo ntsiab muag niaj hnub muab f / 1.2 qhov siab tshaj plaws aperture. Qhov no tso cai rau ntau tshaj ob npaug ntawm lub teeb kom ncav cuag zaj duab xis lossis sensor. Zoom lo ntsiab muag tsis tau tsim kom ua tiav qhov dav dav.

Image
Image

Pob Prime Lenses Txhim Kho Ntsej Muag?

Qee tus neeg hais tias cov lo ntsiab muag tseem ceeb yuav tsum yog lub ntsej muag zoom vim tias lub lens muaj iav tsawg dua. Txawm li cas los xij, qhov ntawd tsis yog li cas optics ua haujlwm niaj hnub no. Nrog cov txheej txheem tsim lub lens niaj hnub thiab cov txheej txheem tsim, cov iav ntxiv tsis yog kev lav phib xaub ntawm cov duab. Nrog rau qhov tseeb hauv kev tsim thiab kev tsim khoom, nrog rau optically ntxuav antiglare thiab antireflective coatings, ntxiv lens ntsiab tsis txhob plam daim duab.

Ceev ceev lo ntsiab muag muab cov kws kos duab sib txawv rau kev tsim cov duab. Qhov dav aperture ua rau qhov tob tob ntawm thaj teb, qhov muag plooj tom qab los tsim cov nyhuv bokeh ntxim nyiam, hais txog cov ntsiab lus tseem ceeb. Qhov no tuaj yeem ua rau cov duab saib zoo dua vim qhov sib txawv ntawm kev tsom mus rau thiab tsis pom qhov pom tau pom tam sim ntawd.

Yog tias koj sib piv cov duab uas tau ntes nrog lub ntsej muag zoom thiab lub ntsej muag zoo tshaj plaws ntawm qhov nruab nrab aperture, tsis muaj lub hom phiaj, pom qhov sib txawv ntawm qhov ntse. Txawm li cas los xij, cov lo ntsiab muag tseem ceeb yog txuam nrog kev ua kom pom tseeb, tshwj xeeb tshaj yog thaum piv rau cov lo ntsiab muag qis nrog rau feem ntau DSLR koob yees duab. Lub koob npe nrov ntawd yog nyob ntawm qhov zoo ntawm cov lo ntsiab muag, tsis yog qhov sib txawv ntawm qhov zoom thiab cov lo ntsiab muag tseem ceeb.

Koj Puas Xav Tau Lub Lens Prime?

Txhua tus kws yees duab yuav tsum muaj tsawg kawg yog ib lub lens tseem ceeb hauv lawv lub hnab kom ntes cov tib neeg lub ntsej muag pom. Rau lub koob yees duab 35 mm, lub lens ib txwm yog li 50 mm. Yog tias koj muaj lub koob yees duab digital nrog cov qoob loo sensor, xav txog lub lens qhov sib npaug ntawm qhov pom thaum txuas rau lub cev qoob loo. Nrog lub lens ceev ceev, koj tuaj yeem ntes cov duab hauv qhov tsaus ntuj yam tsis muaj teeb pom kev zoo, flashes, lossis nrov nrov ISO ratings.

Pom zoo: