RAW photography yog hais txog kev tua cov duab thaij duab hauv ib hom ntawv uas tsis muaj npe hu ua RAW. Koj kuj tuaj yeem hnov qhov no hu ua lub koob yees duab raw; nws txhais tau hais tias cov duab yog unprocessed los yog minimally ua los ntawm koj lub koob yees duab, yog li tag nrho cov thawj cov ntaub ntawv cov duab tseem zoo. Rau cov hom phiaj tom qab ua tiav, qhov no yog hom ntawv zoo tshaj plaws uas koj tuaj yeem siv thaum thaij duab digital.
Vim li cas Koj Yuav Tsum Siv RAW Duab?
Yog tias koj tshiab rau kev yees duab, koj yuav tsis nkag siab txhua qhov fuss txog RAW duab. Dab tsi ua rau lawv zoo heev? Cov lus teb luv luv yog vim tias daim duab RAW tuav tag nrho cov ntaub ntawv ntes los ntawm cov duab sensor ntawm koj lub koob yees duab. Tab sis kev piav qhia ntev dua yuav zoo dua.
Thaum koj thaij duab nrog koj lub koob yees duab DSLR, cov duab sensor ntes lub teeb, duab ntxoov ntxoo, thiab lub suab ntawm cov xim rau lub sijhawm koj lub shutter qhib. Cov ntaub ntawv ntawd raug ntes hauv pixels, lossis me me squares. Nws yog dab tsi tshwm sim tom qab lub shutter qhib thiab kaw thiab cov duab sensor ntes cov ntaub ntawv uas txiav txim siab cov ntaub ntawv hom koj lub koob yees duab outputs.
Yog tias koj tab tom ntes cov duab hauv JPEG hom, uas yog ib qho ntawm cov qauv ua ntej rau feem ntau cov koob yees duab digital, thaum cov duab tau raug ntes, lub koob yees duab ua nws los txiav txim siab seb cov pixels yuav khaws, thiab qhov twg tsis txaus thiab tsis xav tau. Nws kuj ua rau qee qhov kev hloov kho rau koj uas tsis tuaj yeem hloov pauv thaum cov duab tau ua tiav thiab cov pixels tsis siv tau muab pov tseg. Qhov tshwm sim yog cov duab uas zoo li qhov koj tau ntes, tab sis nws muaj cov ntaub ntawv tsawg dua cov duab sensors ntes. Nws yog qhov zoo rau kev sib qhia cov duab, vim tias cov duab me dua thiab yooj yim rau kev tswj hwm, tab sis yog tias koj xav tau tweaks lossis hloov pauv rau cov duab hauv kev tshaj tawm, nws tsis zoo tagnrho.
Thaum koj ntes cov duab hauv RAW hom, cov duab cov ntaub ntawv raug ntes los ntawm cov duab sensor - lub teeb, duab ntxoov ntxoo, thiab cov xim ntawm cov xim - yog sab laug tsis hloov pauv thiab tsis muaj kev sib txuas. Lub koob yees duab tsis txiav txim siab seb pixels yuav khaws thiab qhov twg yuav muab pov tseg thiab nws tsis hloov kho; nws tawm hauv daim duab li-shot yog li koj tuaj yeem txiav txim siab yam tseem ceeb, dab tsi tsis yog, thiab dab tsi yuav tsum tau hloov lossis hloov kho.
Shooting in RAW and RAW File Extensions
Feem ntau lub koob yees duab digital tau teeb tsa los ntes JPEG cov duab los ntawm lub neej ntawd. Yog tias koj xav tua hauv RAW, koj yuav tsum tau hloov kho hauv koj lub koob yees duab hloov mus rau RAW hom. Koj yuav pom cov kev xaiv no hauv koj lub koob yees duab Settings ntawv qhia zaub mov, feem ntau nyob rau hauv ib qho kev xaiv hu ua Quality lossis File Format
Ntau lub koob yees duab muaj peev xwm ntes RAW + JPEG. Qhov no txhais tau li cas yog qhov qub, RAW duab khaws cia, tom qab ntawd lub koob yees duab ua cov duab thiab khaws cov ntawv thib ob ntawm nws nrog kev hloov kho thiab compression hauv JPEG hom. Txij li qhov no muab rau koj ob qho tib si me me rau kev sib koom thiab cov hom loj dua rau kev kho, ntau tus kws yees duab xaiv tua nrog RAW + JPEG es tsis yog ib lossis lwm qhov.
RAW File Formats
Qhov twg txhua yam pib nkag siab me ntsis yog nyob rau hauv cov ntaub ntawv hom ntawv uas koj lub koob yees duab tso tawm rau cov duab RAW. Feem ntau cov tuam txhab siv cov ntaub ntawv txuas ntxiv rau cov ntaub ntawv RAW. Piv txwv li, cov ntaub ntawv RAW los ntawm lub koob yees duab Canon tej zaum yuav tshwm sim raws li CRW lossis CR2 cov ntaub ntawv, thaum cov ntaub ntawv RAW los ntawm Nikon yuav tshwm sim ua cov ntaub ntawv NEF. Nws tsis tshua muaj thaum koj rub tawm cov ntaub ntawv los ntawm koj lub koob yees duab, koj yuav pom RAW txuas ntxiv, txawm tias koj tab tom ua haujlwm nrog RAW cov ntaub ntawv.
Txhawm rau ntxiv ib txheej ntawm kev sib xyaw ua ke, txhua cov ntaub ntawv RAW kuj tseem nrog cov ntaub ntawv XMP (Extensible Metadata Platform). Qhov no yog cov ntaub ntawv uas muaj cov ntaub ntawv hais txog txhua qhov kev hloov kho uas tau ua rau cov ntaub ntawv. Feem ntau, koj yuav tsis pom cov ntaub ntawv no hauv koj lub computer, vim tias software niaj hnub no ntse txaus los nkaum nws. Tab sis nws nyob ntawd, thiab txhua zaus koj hloov pauv rau daim duab hauv kev tshaj tawm cov kev hloov pauv no tau txais kev cawmdim hauv XMP cov ntaub ntawv.
Tau kawg, cov duab RAW muaj ntau dua li JPEG cov duab vim tias lawv muaj cov ntaub ntawv ntau dua. Qee tus kws yees duab tuaj yeem xaiv hom JPEG txhob txwm ua kom tau txais cov duab ntau dua ntawm ib daim npav SD. Thaum qhov no ua rau kev txiav txim siab, qhov muaj thiab nqi ntawm SD phaib hnub no nws ua rau muaj kev nkag siab ntau dua los ntes cov duab hauv RAW thiab pauv SD daim npav rau ib qho tshiab yog tias nws tau puv.
Kuv Yuav Ua Li Cas RAW Duab?
Ib lub peev xwm koj yuav poob yog tias koj xaiv tua hauv RAW tej zaum yuav yog lub koob yees duab-pom tshwj xeeb cov duab lim lossis teeb tsa. Qhov ntawd yog vim tias cov lim tshwj xeeb thiab cov teeb tsa xav kom lub koob yees duab khaws cov duab kawg, nrog rau kev ua dab tsi koj tau xaiv hauv JPEG hom. Rau cov kws yees duab xws li, qhov no yog qhov zoo. Nws yooj yim dua (thiab tej zaum yuav muaj kev lom zem me ntsis) ntxiv rau hauv lub koob yees duab lim rau ib daim duab thiab mam li qhia tam sim ntawd nrog tsev neeg thiab phooj ywg.
Ib lub koob yees duab digital uas qhov no tsis muaj tseeb yog qhov teeb tsa dub & dawb. Koj tseem tuaj yeem tua cov duab zoo nkauj dub & dawb ntawm koj lub koob yees duab, thiab txawm saib ua ntej lawv dub & dawb, tab sis yog tias koj tua hauv RAW, thaum koj upload cov duab rau koj lub computer, koj yuav pom ob qho tag nrho xim RAW. duab thiab JPEG duab dub & dawb. Koj tuaj yeem xaiv tua cov duab dub & dawb li no los yog ua rau lawv dub thiab dawb hauv kev tshaj tawm. Nov yog kev xaiv uas yog koj tus kheej.
Qhov tseem ceeb ntawm cov duab RAW
Qhov tseem ceeb tshaj plaws uas koj yuav xav tua hauv RAW yog tswj hwm txhua cov ntaub ntawv hauv daim duab kom koj tuaj yeem siv kev tshaj tawm los tsim koj tus kheej style. Hmoov tsis zoo, tsis yog txhua daim ntawv thov kev kho duab yuav ua cov duab RAW. Txawm li cas los xij, muaj ob peb yam uas yuav:
- Adobe Lub Koob Yees Duab Raw (nrog rau Photoshop)
- Adobe Lightroom
- GIMP
- Google Photos
- Pixelmator Photo
- Snapseed
- Corel Aftershot Pro
Thaum koj qhib koj cov duab hauv ib qho ntawm cov ntawv thov no, koj tuaj yeem kho txhua yam los ntawm qhov pom ntawm cov duab mus rau xim xim thiab saturation, brightness thiab contrast, thiab ntau, ntau ntxiv. Thiab txij li RAW hom tswj tag nrho cov ntaub ntawv ntes los ntawm cov duab sensor, koj muaj kev tswj hwm qhov kawg ntawm qhov kev txhaj tshuaj, uas txhais tau tias koj tuaj yeem ntxiv koj tus kheej styling - ib yam dab tsi lub koob yees duab yuav tsis tuaj yeem ntes - rau daim duab.
