2024 Tus sau: Sierra Becker | [email protected]. Kawg hloov kho: 2024-02-26 05:10
Thaum tus kws yees duab pib pib kawm paub siv lub koob yees duab ntau dua lossis tsawg dua, nws pib xav tau qee yam ntxiv. Txhawm rau txhim kho nws txoj haujlwm zoo thiab kev txhim kho ntxiv, nws yuav zaum txiav txim siab kom tau txais optics tshiab. Thiab tam sim ntawd tus kws yees duab ntsib qhov teeb meem ntawm qhov lens zoo dua. Kev ua lag luam yog tag nrho ntawm ntau yam qauv hauv ntau hom nqi, tab sis koj yuav txiav txim siab li cas raws nraim koj xav tau?
Ua ntej tshaj, koj yuav tsum txiav txim siab seb koj xav tua dab tsi. Qhov no yog ib qho tseem ceeb heev, vim hais tias feem ntau cov kws tshaj lij lo ntsiab muag muaj zog hauv qee qhov chaw, tab sis tsis haum rau txhua lub hom phiaj. Yog li ntawd, ua ntej txiav txim siab xaiv lub lens, txiav txim siab rau koj tus kheej qhov koj xav tau los ntawm nws.
xav tias koj xav tua cov ntsiab lus macro. Qhov no yuav tsum tau optics uas tuaj yeem ua kom pom cov ntsiab lus ntau zaus, thaum tsim kom pom qhov muag plooj zoo nkauj. Thiab qhov no yog ib kauj ruam tseem ceeb hauv kev txiav txim siab seb yuav xaiv lub lens twg. Rau Nikon, NIKON AF-S 105 mm f / 2, 8 qauv yog tsim, uas, vim nws lub teeb rhiab heev, tuaj yeem tsim ntse thiabcov duab zoo ntawm cov khoom me me. Yog tias koj txaus siab rau lub lens twg los xaiv rau Canon, ces Canon EF 24-105mm f / 1, 4 yuav yog ib qho analogue, uas muaj kwv yees li qhov tsis sib xws, tab sis tsis yog kho.
Thaum xaiv lub lens, xav txog nws qhov aperture. Qhov no yog qhov tseem ceeb tshaj qhov ntsuas qhov muag pom, thiab nws muaj qhov cuam tshuam loj tshaj plaws ntawm cov duab zoo. Yog tias ua tau, sim xaiv lub lens sai dua, tsis hais koj lub hom phiaj. Nws tuaj yeem pab koj tawm ntau dua ib zaug hauv qhov xwm txheej tsis tau pom dua, ntxiv rau nws muab cov nyiaj tshwj xeeb me me rau hauv daim ntawv zoo nkauj bokeh (plam qauv).
Thaum txiav txim siab xaiv lub lens twg, ua tib zoo saib rau qhov ntev focal. Lub lens me dua 50mm yog suav tias yog lub kaum sab xis dav. Tsis tas li ntawd, qhov me me ntawm qhov focal ntev, qhov muaj zog dua qhov distortion (distortion ntawm kab rov tav). Cov qauv zoo li no yog siv rau kev tua toj roob hauv pes, panoramas, sab hauv.
50mm txog 80mm qauv yog qhov zoo rau kev kos duab. Yog tias koj tab tom npaj tua hauv qhov chaw me me, lub lens 50mm yog qhov tsim nyog rau koj. Yog tias koj muaj lub sijhawm txav mus deb ntawm tus qauv kom deb li deb, koj tuaj yeem xaiv lub lens 80 mm, uas muab qhov pom kev zoo nkauj dua.
Yog tias koj tsis paub lub lens twg los xaiv rau kev tshaj tawm xov xwm, koj yuav tsum xav txog cov qauv nrog qhov ntev ntawm 100-200 hli. Lawv kuj tsim nyog rau cov khoom macro vim lawv lub peev xwm loj.
Muaj lo ntsiab muag nrogmanual thiab auto focus. Yog tias koj twb tau mus nrog kev yees duab, koj yuav tsum txiav txim siab seb qhov twg yog qhov yooj yim dua rau koj. Ib tug pib tuaj yeem raug qhia kom siv optics, qhov twg muaj ob hom kev tsom.
Lwm yam ntawm cov kev ntsuas uas yuav pab koj txiav txim siab seb lub lens xaiv yog qhov muaj cov duab stabilizer. Nws yog tsim los kom du thiab muag lub koob yees duab co. Tshwj xeeb tshaj yog pab tau nyob rau hauv ntev focal ntev lo ntsiab muag. Thiab kuj tsis txhob ua superfluous yog tias koj tua yam tsis muaj tripod.
Tom qab tshuaj xyuas cov ntsuas no, koj tuaj yeem pib xaiv lub lens.
Pom zoo:
Yuav ua li cas thaij duab zoo: xaiv qhov chaw, teeb tsa, keeb kwm yav dhau, cov cuab yeej zoo, cov phiaj xwm kho duab thiab cov lus qhia los ntawm cov kws yees duab
Nyob hauv lub neej ntawm txhua tus neeg muaj ntau yam xwm txheej uas koj xav kom nco ntsoov mus ntev, yog vim li cas peb thiaj li nyiam yees duab lawv heev. Txawm li cas los xij, feem ntau tshwm sim tias peb cov duab tuaj yeem ua tsis tiav thiab lawv txawm txaj muag los luam tawm. Txhawm rau kom cov duab tig tawm zoo nkauj, koj yuav tsum paub ntau yam kev cai tseem ceeb, qhov tseem ceeb ntawm qhov sib piv golden thiab muaj pes tsawg leeg
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