Nws yooj yim kom tsis meej pem txog tus lej ntawm pixels koj xav tau hauv daim duab. Tab sis, thaum txiav txim siab, nws txhua tus npau taws rau qhov koj yuav siv cov duab thiab qhov ntev ntawm qhov luam tawm. Nov yog daim ntawv qhia ua ke los pab koj txiav txim siab seb koj xav tau pes tsawg pixels rau luam tawm cov duab loj loj ntawm lub tshuab luam ntawv inkjet lossis los ntawm kev pabcuam luam ntawv online.
Nws yog ib qho tseem ceeb kom nkag siab cov ntsiab lus ntsig txog cov duab loj thiab kev daws teeb meem:
- Pixels Ib Nti (PPI): Kev ntsuas ntawm cov duab daws teeb meem uas txhais qhov loj ntawm cov duab yuav luam tawm
- Dots Per Inch (DPI): Kev ntsuas ntawm lub tshuab luam ntawv daws teeb meem uas txhais tau tias muaj pes tsawg teev ntawm tus number case muab tso rau ntawm nplooj ntawv thaum daim duab luam tawm
- Megapixels (MP): Ib lab pixels, txawm tias tus lej no feem ntau sib npaug thaum piav qhia txog lub koob yees duab digital daws teeb meem
Less than 2 MP
Tsim nyog tsuas yog saib ntawm qhov screen thiab lub hnab nyiaj-loj luam tawm
2 MP=1600 x 1200 pixels
High quality: 4 x 6 nti, 5 x 7 nti
Txais tau zoo: 8 x 10 nti
3 MP=2048 x 1536 pixels
High quality: 8 x 10 nti
Txais tau zoo: 10 x 13 ntiv tes
4 MP=2272 x 1704 pixels
High quality: 9 x 12 nti
Txais tau zoo: 12 x 16 ntiv tes
5 MP=2592 x 1944 pixels
High quality: 10 x 13 nti
Txais tau zoo: 13 x 19 ntiv tes
Thaum koj tau dhau 5 megapixels, muaj feem yuav yog koj yog tus kws yees duab tshaj lij uas siv cov cuab yeej siv siab, thiab koj yuav tsum muaj lub tswv yim ntawm cov duab loj thiab daws teeb meem.
Megapixel Madness
Cov tuam txhab lub koob yees duab digital yuav muaj txhua tus neeg siv khoom ntseeg tias ntau dua megapixel suav ib txwm zoo dua; Txawm li cas los xij, raws li koj tuaj yeem pom los ntawm daim duab saum toj no tshwj tsis yog tias koj muaj lub tshuab luam ntawv loj inkjet, txhua yam loj dua 3 MP yog ntau dua li cov neeg feem coob yuav xav tau.
Qee zaum, txawm li cas los xij, ntau megapixels tuaj yeem ua ke. Lawv tuaj yeem muab cov kws yees duab nyiam ua haujlwm rau kev ywj pheej los cog qoob loo ntau dua thaum lawv tsis tuaj yeem nyob ze rau ib qho kev kawm raws li lawv xav tau. Kev lag luam tawm yog cov ntaub ntawv loj dua uas xav tau ntau qhov chaw hauv koj lub koob yees duab nco thiab ntau qhov chaw cia hauv koj lub computer. Tus nqi ntawm kev khaws cia ntxiv yog qhov tsim nyog, txawm li cas los xij, tshwj xeeb tshaj yog rau lub sijhawm thaum koj ntes cov duab uas tsis muaj nqi thiab xav luam tawm hauv hom loj rau framing.
Nco ntsoov, koj tuaj yeem siv qhov kev pabcuam luam ntawv online yog tias koj lub tshuab luam ntawv tsis tuaj yeem tuav cov ntawv luam loj.
A Final Note
Qhov tseem ceeb tshaj plaws kom nkag siab yog tias koj yuav tsum tsis txhob nce PPI tus nqi ntawm daim duab los ntawm kev nce cov duab loj thiab qhov kev daws teeb meem hauv Photoshop lossis lwm cov duab ua haujlwm. Thaum koj ua li ntawd, qhov kawg ntawm cov ntaub ntawv loj thiab cov duab qhov ntev nce ntau, thiab cov ntaub ntawv xim hauv cov pixels tshiab tsuas yog "zoo tshaj qhov kwv yees" ntawm lub khoos phis tawj. Cov kab hauv qab, yog tias daim duab muaj qhov daws teeb meem ntawm 200 PPI lossis tsawg dua, nws tsuas yog yuav tsum tsis txhob ntaus xovxwm.
