To taub xim Spectrums hauv Digital Photography
RGB, CMYK ... nws lub suab zoo li ib pawg tsiaj ntawv kua zaub. Lawv yog, qhov tseeb, siv los piav qhia xim nyob hauv lub ntiaj teb digital photography. Nws yog ib qho tseem ceeb rau cov neeg muab kev pabcuam kom muaj kev to taub ntawm ob lub ntsiab lus no vim hais tias lawv muaj kev cuam tshuam zoo rau cov xim ntawm koj cov duab, ob qho tib si ntawm kev tshuaj ntsuam thiab luam tawm.
Ib qho kev piav qhia sai yog: RGB yog rau lub vas sab thiab CMYK yog rau luam tawm. Nws yog me ntsis nyuab tshaj qhov ntawd, yog li cia peb mus saib ze ntawm cov xim spectrums.
RGB yog dab tsi?
RGB stands rau Liab, Ntsuab, thiab Xiav thiab hais txog peb lub ntsiab xim uas ib txwm tuaj yeem sib xyaw ua ke nyob rau hauv ntau hom txawv los ua cov xim sib txawv.
Thaum koj nqa ib daim duab ntawm koj lub DSLR , koj lub koob yees duab yuav ua rau koj txoj kev txhaj tshuaj siv lub RGB spectrum. Cov computer saib tseem ua haujlwm hauv RGB , yog li nws yog ib qho yooj yim rau cov neeg siv yuav cia siab tias qhov lawv pom ntawm lawv cov vijtsam sab LCD yuav yog yam lawv pom ntawm lawv lub monitor.
RGB paub yog ib qho xim muaj xim ntxiv, raws li nws cia siab ntxiv cov nqi ntawm peb xim kom txawv xim.
- Hauv RGB spectrum, muaj 256 theem ci ntsa iab uas ua tau 16,777,216 (256 x 256x256) xim.
- Los ntawm qhov teem txhua xim RGB rau ib qho ntawm "0," peb tuaj yeem tsim dub.
- Ib yam li ntawd, qhov "255" ntawm txhua qhov xim tuaj yeem dawb.
Yog li no, RGB yog kev ua lag luam vim rau DSLRs thiab computer monitors, raws li nws tso cai rau peb saib cov xim tseeb ntawm-rau-lub neej ntawm kev tshuaj ntsuam.
CMYK yog dab tsi?
Txawm li cas los xij, yog tias peb xav sau peb cov duab uas siv cov xim tseeb, peb yuav tsum hloov mus rau CMYK. Qhov no yog rau Cyan, Magenta, Daj, thiab Dub.
CMYK yog ib qho xim sib txig sib txig, raws li cyan, magenta, thiab daj pigments yog siv cov ntxaij lim dej. Qhov no txhais tau hais tias lawv rho ntau ntau ntawm cov xim liab, ntsuab, thiab xiav los ntawm lub teeb dawb los tsim cov xim sib txawv.
Yog li, ib qho duab tso tawm ntawm lub computer monitor yuav tsis phim ib qho luam, tshwj tsis yog tias RGB spectrum yog hloov mus rau CMYK. Txawm hais tias muaj ntau lub tshuab luam ntawv tam sim no hloov los ntawm RGB mus rau CMYK cia, cov txheej txheem tseem tsis tau zoo meej. Raws li RGB tsis muaj cov channel dub ncoo, blacks tuaj yeem tshwm nyob nplua nuj.
Ua haujlwm nrog cov Printers
Technology tau hloov zuj zus rau xyoo tas los no thiab nws tsis tas yuav tsum tau hloov los ntawm RGB rau CMYK thaum koj xav luam daim duab. Txawm li cas los xij, muaj qee qhov xwm txheej uas qhov no tsim nyog.
Luam Hauv Tsev
Feem ntau cov tshuab luam ntawv hauv tsev thiab cov chaw ua haujlwm siv CMYK. Cov tshuab luam ntawv nyob rau hauv ob qho tib si software software thiab cov tshuab luam ntawv tam sim no yog ib txoj hauj lwm zoo heev uas hloov tau cov xim RGB rau hauv CMYK.
Rau feem ntau, lub tshuab luam ntawv hauv tsev tsis tas txhawj txog kev hloov dua siab tshiab. Txawm li cas los xij, yog tias koj pom tias koj cov dub tsis zoo, koj yuav xav ua ib qho kev hloov dua tshiab thiab ib qho kev xeem sau kom pom tias qhov ntawd pab.
Ua hauj lwm nrog Cov Ntawv Sau Npe
Muaj ob hom kev lag luam luam tawm uas koj tau ua haujlwm nrog thiab qee tus neeg yuav hais kom koj hloov ib daim duab mus rau CMYK.
Feem ntau hnub no, koj yuav tsis tau hloov dua siab tshiab. Qhov no muaj tseeb tshwj xeeb tshaj yog thaum siv tus qauv luam ntawv yees duab. Cov software thiab cov kws tshaj lij yuav siv cov xim ntau tshaj plaws los tsim cov duab zoo tshaj plaws. Lawv xav ua kom cov qhua zoo siab thiab paub tias txhua tus neeg tsis muaj kev to taub tag nrho ntawm kev siv tshuab.
Yog tias koj nqa koj cov hauj lwm rau ib lub tshuab luam ntawv rau nplooj siab rau tej yam xws li ntawv xa tawm, ntawv nthuav qhia, thiab lwm yam., Lawv thov kom tus duab hauv CMYK. Qhov no yog vim nws yog hom uas lawv tau ua haujlwm nrog. CMYK, tseem hu ua plaub-xim luam ntawv, hnub rov qab mus rau hnub ntawm xim luam ntawv thiab ua ua ntej kev siv digital technology txawm xav.
Hloov los ntawm RGB rau CMYK
Yog tias koj xav hloov ib qho duab los ntawm CMYK rau RGB rau ib lub tshuab luam ntawv, nws yooj yim heev thiab yuav luag txhua tus duab editing software muaj qhov kev xaiv no.
Hauv Photoshop, nws yuav yooj yim li navigating rau: Duab> Hom> CMYK xim.
Thaum koj xa cov ntaub ntawv mus rau koj lub tshuab luam ntawv, ua haujlwm nrog lawv thiab ua cov ntawv xeem (pov thawj) kom paub tseeb tias qhov xim ntawd yog qhov koj xav tau. Ntxiv dua thiab, lawv xav kom tus qhua yuav zoo siab thiab yuav zoo siab taug kev los ntawm koj txoj kev.