Kawm Thaum Twg Siv Hom Hom Ntaub Ntawv Dua
JPEG, TIFF, thiab RAW yog cov duab thaij duab uas ze li DSLR koob yees duab tau siv. Cov koob yees duab pib feem ntau tsuas yog muab cov ntaub ntawv JPEG. Ib co DSLR koob yees duab thiab tua hauv JPEG thiab RAW ib txhij. Thiab thaum koj yuav tsis pom ntau lub koob yees duab uas muaj TIFF photography, qee cov koob yees duab zoo tshaj plaws muaj cov duab no meej. Mus nyeem ntawv kom paub ntau ntxiv txog txhua hom ntawv yees duab.
JPEG
JPEG siv hom ntawv kom sib haum los tshem tawm ib co pixels uas qhov kev hloov algorithm deems tsis tseem ceeb, uas txuag tau qee qhov chaw cia. Cov kev sib txuam yuav tshwm sim hauv cov cheeb tsam ntawm daim duab uas cov xim ntawm cov pixels rov qab, xws li hauv ib daim duab uas pom ntau ntawm lub ntuj xiav. Cov firmware los sis software hauv lub koob yees duab yuav xam cov theem ntawm lub koob yees duab thaum lub koob yees duab txuag cov yees duab, yog li qhov txo qhov chaw cia tshwm sim tam sim ntawd, txuag qhov chaw ntawm daim npav nco.
Feem ntau cov duab thaij yuav ua haujlwm hauv JPEG feem ntau ntawm cov sij hawm, raws li JPEG yog cov qauv duab hauv digital koob yees duab, tshwj xeeb tshaj yog pheej yig taw thiab tua cov koob yees duab. Smartphone koob yees duab tseem teev tseg rau hauv JPEG hom ntawv feem ntau ntawm cov sij hawm. Ntau dua cov koob yees duab, xws li DSLR koob yees duab, kuj tua hauv JPEG ntau ntau zaus. Yog tias koj npaj yuav muab cov duab nyob hauv kev tshaj tawm, kev siv JPEG yog ntse, vim nws yooj yim xa cov ntaub ntawv me me los ntawm kev tshaj tawm.
RAW
RAW yog nyob ze rau zaj duab xis zoo, ntxiv ntau qhov chaw cia. Lub koob yees duab digital tsis compress lossis ua cov ntaub ntawv RAW txhua txoj kev. Qee cov neeg pom RAW hom ua "digital negative" vim tias nws tsis hloov dab tsi txog cov ntaub ntawv thaum khaws cia nws. Nyob ntawm koj lub koob thaij duab, lub RAW hom yuav raug hu ua lwm yam, xws li NEF lossis DNG. Tag nrho cov hom ntawv no zoo sib xws, txawm tias lawv siv cov duab sib txawv duab sib txawv.
Qee lub koob yees duab hauv qib pib pub RAW hom ntawv cia cia. Qee cov kev tshaj lij thiab kev tshaj li kev nyiam RAW vim tias lawv tuaj yeem ua lawv tus kheej editing rau hauv cov duab tsis muaj kev txhawj xeeb txog cov ntsiab lus ntawm daim duab qhov kev kho kom yuam kev tawm, xws li nrog JPEG. Piv txwv li, koj tuaj yeem hloov cov nyiaj tshuav dawb ntawm kev yees duab txhaj tshuaj hauv RAW uas siv duab editing software. Qee cov koob yees duab smartphone pib tawm RAW duab tawm tswv yim nrog rau JPEG.
Ib qho tsis zoo rau kev tua hauv RAW yog qhov loj ntawm qhov chaw cia khoom siv, uas yuav ua rau koj daim npav nco ceev nrooj. Lwm qhov teeb meem koj tuaj yeem nrog RAW yog tias koj tuaj yeem tsis qhib nrog qee hom duab editing lossis saib software. Piv txwv, Microsoft Paint tsis qhib RAW ntaub ntawv. Feem ntau cov zaub muag ib leeg duab editing program qhib tau cov ntaub ntawv RAW.
TIFF
TIFF yog ib qho kev hloov compression uas tsis plam lwm cov ntaub ntawv hais txog kev yees duab cov ntaub ntawv, yog li. TIFF cov ntaub ntawv muaj ntau dua nyob hauv cov ntaub ntawv loj tshaj JPEG lossis RAW ntaub ntawv. TIFF yog hom ntau tshaj tawm hauv graphics publishing lossis kev mob kev kho mob tshaj li nws yog cov digital photography, tab sis muaj qee lub sijhawm cov kws tshaj lij yuav muaj qhov project uas yuav tsum muaj TIFF cov ntaub ntawv. Muaj ntau lub koob thaij duab muaj peev xwm ua tau rau hauv TIFF.
Yuav siv JPEG, RAW, thiab TIFF
Yog tias koj yog tus kws yees duab uas yuav los ua luam loj loj, qhov zoo tshaj plaws hauv JPEG yog qhov yuav mus ntsib koj cov kev xav tau rau cov ntaub ntawv yees duab. TIFF thiab RAW yog overkill rau ntau yam kev pab txog, tshwj tsis yog tias koj muaj ib qho laj thawj rau kev tua nyob hauv TIFF los yog RAW, xws li qhov kev xav tau meej duab editing .
Nrhiav dua cov lus teb rau cov lus nug hauv koob yees duab rau ntawm lub koob yees duab FAQ.