Koj puas tau saib ntawm lub vijtsam LCD ntawm lub koob yees duab hauv chav ci ntsa iab thiab xav tias daim duab tsaus nti los yog qis dua?Los yog koj puas tau pom tib lub vijtsam hauv qhov chaw tsaus ntuj thiab xav tias daim duab tau nthuav tawm?Ironically, qee zaum cov duab tshwm sim tsis yog qhov koj xav tias nws yuav yog.
"Exposure" yog ib qho ntawm cov txuj ci tseem ceeb rau kev tua cov yeeb yaj kiab.Txawm hais tias cov neeg siv tuaj yeem siv cov duab-editing software los hloov kho tom qab tsim khoom, kev tswj kom raug raug tuaj yeem pab tus kws yees duab tau txais cov duab zoo thiab tsis txhob siv sijhawm ntau dhau hauv kev tsim khoom tom qab.Txhawm rau pab cov kws yees duab thaij duab hauv kev saib xyuas cov duab raug, ntau DSLRs muaj cov haujlwm ua haujlwm los saib xyuas qhov raug.Piv txwv li, Histogram thiab Waveform yog cov cuab yeej siv tau rau cov kws yees duab tshaj lij.Hauv kab lus hauv qab no, peb tab tom yuav qhia cov qauv ua haujlwm kom tau txais qhov raug raug raug.
Histogram
Histogram Scope yog tsim los ntawm "X-axis" thiab "Y-axis."Rau qhov "X" axis, daim duab sab laug sawv cev rau qhov tsaus ntuj, thiab sab xis sawv cev qhov ci.Lub Y-axis sawv cev rau qhov siv pixel siv thoob plaws hauv ib daim duab.Qhov siab dua tus nqi ncov, ntau pixels muaj rau ib qho kev ci ntsa iab thiab thaj chaw loj dua nws nyob.Yog tias koj txuas tag nrho cov ntsiab lus ntawm tus nqi pixel ntawm Y axis, nws tsim cov Histogram Scope txuas ntxiv.
Rau cov duab overexposed, tus histogram tus nqi siab tshaj plaws yuav tsum tau tsom mus rau sab xis ntawm X-axis;conversely, rau ib tug underexposed duab, lub histogram lub ncov tus nqi yuav tsum concentrated nyob rau sab laug ntawm lub X-axis.Rau cov duab sib npaug zoo, tus histogram tus nqi siab tshaj plaws faib tusyees ntawm qhov chaw ntawm X-axis, ib yam li daim ntawv faib khoom ib txwm.Siv Histogram Scope, tus neeg siv tuaj yeem soj ntsuam seb qhov raug puas yog nyob rau hauv qhov tseeb dynamic brightness thiab xim saturation ntau yam.
Waveform Scope
Waveform Scope qhia qhov luminance thiab RGB & YCbCr qhov tseem ceeb rau daim duab.Los ntawm Waveform Scope, cov neeg siv tuaj yeem soj ntsuam qhov ci thiab qhov tsaus ntuj ntawm daim duab.Lub Waveform Scope hloov cov qib ci thiab qhov tsaus ntuj ntawm cov duab mus rau lub waveform.Piv txwv li, yog tias "Tag Nrho Tsaus Ntuj" tus nqi yog "0" thiab "Tag Nrho Bright" tus nqi yog "100", nws yuav ceeb toom cov neeg siv yog tias qhov tsaus ntuj qis dua 0 thiab qhov ci ci siab dua 100 hauv daim duab.Yog li, tus kws yees duab yees duab tuaj yeem tswj hwm cov qib no zoo dua thaum tua yees duab.
Tam sim no, Histogram muaj nuj nqi muaj nyob rau ntawm nkag-theem DSLR koob yees duab thiab saib xyuas teb.Txawm li cas los xij, tsuas yog cov kws tshaj lij saib xyuas kev txhawb nqa Waveform Scope muaj nuj nqi.
Xim cuav
Xim cuav kuj hu ua "Exposure Assist."Thaum lub False Color Function yog nyob rau, ib daim duab cov xim yuav raug highlighted yog tias nws yog over-exposed.Yog li, tus neeg siv tuaj yeem tshuaj xyuas qhov raug yam tsis siv lwm yam khoom kim heev.Txhawm rau kom paub tseeb False Color qhov qhia, tus neeg siv yuav tsum nkag siab cov xim spectrum qhia hauv qab no.
Piv txwv li, nyob rau hauv cov cheeb tsam uas muaj qhov tshwm sim ntawm 56IRE, cov xim tsis tseeb yuav pom zoo li xim liab ntawm lub monitor thaum siv.Yog li ntawd, thaum koj nce qhov raug, qhov chaw ntawd yuav hloov xim mus rau grey, ces daj, thiab thaum kawg mus rau liab yog overexposed.Xiav qhia tias tsis pom kev.
Zebra Qauv
"Zebra Pattern" yog ib qho kev pab cuam uas yooj yim to taub rau cov neeg siv tshiab.Cov neeg siv tuaj yeem teeb tsa theem pib rau daim duab, muaj nyob rau hauv "Exposure Level" kev xaiv (0-100).Piv txwv li, thaum theem pib tau teem rau "90", ib qho kev ceeb toom zebra qauv yuav tshwm sim thaum lub teeb ci hauv qhov screen nce mus txog saum toj "90", ceeb toom tus kws yees duab kom paub txog cov duab overexposure.
Post lub sij hawm: Apr-22-2022