Cov iav dav davmuaj qhov ntev focal luv, lub kaum sab xis dav, thiab qhov tob ntev, thiab tuaj yeem tsim cov duab zoo heev. Lawv siv dav hauv kev thaij duab toj roob hauv pes, kev tsim vaj tsev, thiab lwm yam. Vim lawv cov yam ntxwv tshwj xeeb ntawm kev thaij duab, cov iav dav dav xav tau qee qhov kev xav tshwj xeeb thaum siv.
Cov kev xav tshwj xeeb rau kev siv cov iav dav dav yog dab tsi?
Vim nws cov yam ntxwv tshwj xeeb ntawm kev thaij duab, cov iav dav dav yuav tsum tau xav txog tshwj xeeb kom ntseeg tau tias cov txiaj ntsig zoo tshaj plaws ntawm kev thaij duab:
1.Ua tib zoo saib xyuas kev tswj kev cuam tshuam
Vim lawv cov yam ntxwv ntawm cov qauv, cov iav tsom iav dav dav feem ntau yuav raug kev cuam tshuam los ntawm lub qhov muag, uas ua rau cov khoom ntawm ntug ntawm tus ncej zoo li raug cuam tshuam. Piv txwv li, cov kab ncaj tuaj yeem zoo li nkhaus lossis bulged. Qhov kev cuam tshuam no pom tseeb tshwj xeeb thaum thaij duab cov tsev lossis cov toj roob hauv pes.
Yog li ntawd, cov kws thaij duab yuav tsum tau ua tib zoo saib xyuas qhov kev teeb tsa thaum thaij duab, tsis txhob muab cov khoom tseem ceeb tso rau ntawm ntug ntawm tus ncej kom txo qhov cuam tshuam ntawm kev cuam tshuam. Piv txwv li, koj yuav tsum khaws lub koob yees duab rau hauv txoj kab rov tav thaum thaij duab, lossis kho nws los ntawm software tom qab.
Ua tib zoo saib xyuas kev tswj kev cuam tshuam thaum siv cov lens dav dav
2.Ua tib zoo mloog rau kev sau ntawv thiab kev xaiv cov ntsiab lus
Cov iav dav davmuaj qhov pom dav dav, uas yooj yim suav nrog ntau yam keeb kwm yav dhau los, ua rau daim duab tsis meej thiab cuam tshuam tus neeg saib. Yog li ntawd, cov kws thaij duab yuav tsum npaj lawv cov duab ua ntej, xaiv cov ntsiab lus kom meej, thiab siv cov txheej txheem tsim kom pom tseeb.
Piv txwv li, siv cov kab pem hauv ntej, cov kab, lossis cov kab ua ntej tuaj yeem coj tus neeg saib lub qhov muag, ua rau daim duab pom tseeb dua thiab meej dua. Piv txwv li, thaum thaij duab cov tsev, koj tuaj yeem siv cov kab geometric ntawm cov choj thiab cov laj kab los txhim kho qhov tob hauv daim duab.
3.Ua tib zoo saib xyuas kev kho lub teeb
Lub kaum sab xis dav ntawm lub lens dav dav tuaj yeem ua rau vignetting (lub teeb tsawg ntawm ntug ntawm lub lens) thaum tua hauv qhov chaw tsaus ntuj, tshwj xeeb tshaj yog nyob rau hauv cov xwm txheej backlit.
Lub sijhawm no, koj tuaj yeem ua kom lub koob yees duab ISO rhiab heev thiab siv lub luag haujlwm tseem ceeb ntawm lub suab kom txo qhov teeb meem vignetting. Yog tias tsim nyog, koj tuaj yeem siv cov khoom siv teeb pom kev zoo (xws li lub teeb ci lossis lub teeb ci) los sib npaug lub teeb hauv daim duab thiab xyuas kom meej tias qhov ci ntsa iab ntawm daim duab yog sib xws.
Ua tib zoo saib xyuas kev ua haujlwm ntawm lub teeb thaum siv lub lens dav dav
4.Ceev faj thaum siv cov lim dej
Ceev faj thaum siv cov lim dej, tshwj xeeb tshaj yog thaum siv lublub lens dav davsiv cov lim dej polarizing lossis cov lim dej ntsia hlau, vim qhov no yuav ua rau cov npoo ntawm daim duab tsis meej lossis cov ces kaum tsaus. Cov lim dej slip-on feem ntau tsim nyog dua rau cov iav dav dav.
Piv txwv li, siv lub lens ultra-wide-angle nrog lub lim polarizing tuaj yeem ua rau lub teeb tsis sib npaug ntawm lub ntuj, uas yuav tsum tau kho tom qab tsim rau lub ntuj saturation. Xwb, kev sib xyaw ua ke no tsuas yog siv rau hauv cov xwm txheej uas muaj kev cuam tshuam ib nrab (xws li dej).
5.Ua tib zoo saib xyuas qhov kev tsom mus rau thiab qhov tob ntawm daim teb
Lub lens dav dav qhov focal length luv ua rau autofocus nyuaj thiab yooj yim poob qhov focus, yog li ntawd pom zoo kom siv manual focus. Tsis tas li ntawd, cov lens dav dav feem ntau muaj qhov tob ntawm daim teb, uas tuaj yeem ua kom feem ntau ntawm thaj chaw los ntawm pem hauv ntej mus rau tom qab tseem meej.
Yog tias koj xav tau kom pom qhov tseem ceeb ntawm daim duab, koj yuav tsum sim txav daim duab kom ze rau lub lens thiab siv lub qhov (aperture) loj los nias qhov tob ntawm daim duab.
Thaum siv lub lens dav dav, xyuam xim rau qhov kev tsom mus rau qhov tob thiab qhov tob ntawm daim teb
6.Ua tib zoo saib lub kaum sab xis thiab kev ruaj khov ntawm kev tua
Vim yog qhov tshwj xeeb ntawm lub kaum sab xis saib, yuav tsum tau them sai sai rau kev xaiv lub kaum sab xis thaum tua nrog alub lens dav davCov iav tsom iav dav dav yog qhov zoo tagnrho rau kev thaij duab los ntawm cov ces kaum qis, ua kom muaj qhov tob thiab peb-seem.
Txawm li cas los xij, yuav tsum ceev faj kom tsis txhob kov lub lens thiab hauv av kom tsis txhob khawb. Thaum thaij duab los ntawm cov ces kaum siab, nws yog ib qho tseem ceeb kom tswj lub lens kom ruaj khov kom tsis txhob muaj qhov tsis meej los ntawm kev co tes. Txhawm rau tiv thaiv kev cuam tshuam, siv lub tripod yog tias tsim nyog.
Feem ntau, kev siv lub lens dav-lub kaum sab xis yuav tsum tau npaj ua tib zoo raws li nws cov yam ntxwv ntawm kev thaij duab. Cov kws thaij duab yuav tsum paub txog nws cov zog thiab qhov tsis muaj zog, ua tib zoo saib xyuas cov teeb meem xws li kev cuam tshuam, kev teeb tsa, thiab cov ces kaum thaij duab. Los ntawm kev xyaum thiab kev siv cov txheej txheem kom raug, lawv tuaj yeem siv tag nrho cov txiaj ntsig pom ntawm lub lens dav-lub kaum sab xis los tsim cov duab zoo nkauj thiab pom kev zoo.
Cov Lus Xaus:
Los ntawm kev ua haujlwm nrog cov kws tshaj lij ntawm ChuangAn, ob qho tib si tsim thiab tsim khoom yog ua los ntawm cov kws ua haujlwm txawj ntse. Raws li ib feem ntawm cov txheej txheem yuav khoom, tus neeg sawv cev ntawm lub tuam txhab tuaj yeem piav qhia ntxiv txog cov ntaub ntawv tshwj xeeb txog hom lens uas koj xav yuav. ChuangAn cov khoom siv lens siv rau ntau yam kev siv, los ntawm kev saib xyuas, kev luam theej duab, drones, tsheb mus rau cov tsev ntse, thiab lwm yam. ChuangAn muaj ntau hom lens tiav lawm, uas kuj tuaj yeem hloov kho lossis kho raws li koj xav tau. Tiv tauj peb sai li sai tau.
Lub sijhawm tshaj tawm: Lub Kaum Hli-17-2025
