Dab tsi cuam tshuam rau cov duab pom meej: megapixel thiab cov ntawv luv

2024 Tus sau: Sierra Becker | [email protected]. Kawg hloov kho: 2024-02-26 05:10

Tam sim no, koj tsis tas yuav yog tus kws tshaj lij los thaij duab zoo. Txhawm rau kom tau txais txiaj ntsig zoo, ib txwm "xiav lub thawv" kuj tseem tsim nyog rau tus kws yees duab tshiab. Kev paub dav dav ntawm cov txheej txheem kev yees duab yuav xav tau los xaiv cov txheej txheem tsim nyog. Hauv kab lus no, koj yuav kawm txog dab tsi 1 megapixel yog dab tsi thiab yuav txo nws li cas. Nws tseem yuav pab koj nkag siab cov yam ntxwv tseem ceeb ntawm lub koob yees duab uas cuam tshuam rau cov duab. Puas muaj tseeb tias qhov pom tseeb ntawm daim duab nyob ntawm tus lej megapixels?

Kev nkag siab lub tswvyim

Digital photography muaj ntau cov dots uas tsim cov duab. Lawv hu ua pixels. Txhua tus ntawm lawv yog lub hauv paus ntawm kev tsim lub matrix, ntau lawv tus lej, qhov zoo dua lub koob yees duab nws tus kheej. Yog li, 1 megapixel muaj 1,000,000 pixels.

Koj tuaj yeem txhais cov lus no li cas? Ib qho luv luv rau megapixel yog mpx. Lub tswvyim los ntawm cov lus Askivpix thiab element. Tej zaum, nrog kev nce ntxiv hauv daim duab tau txais los ntawm lub cuab yeej, koj twb pom tias cov duab tau muab faib ua cov squares me me li cas? Cov no yog cov pixels.

Koj xav tau pes tsawg units

Koj tuaj yeem ua tau raws li kev xav tias qhov ntau dots thiab, raws li, qhov kev daws teeb meem siab dua, daim duab yuav pom tseeb dua. Nyob rau hauv qhov tseeb, zoo optics thiab craftsmanship yog deb tshaj qhov tseem ceeb.

Qhov tshwm sim yog cuam tshuam los ntawm kev teeb tsa aperture, shutter ceev, ISO (lub teeb rhiab heev) thiab ntau lwm yam. Ntawm cov xwm txheej sab nraud, qhov no yog lub teeb pom kev los yog lub teeb ntuj, huab cua tej yam kev mob (nyob rau hauv cov xwm txheej uas qhov kev tua tshwm sim ntawm txoj kev).

Lub cev loj ntawm matrix nws tus kheej muaj qhov cuam tshuam ntau dua rau cov yam ntxwv ntawm daim duab ntau dua li tus lej megapixels (lossis luv luv - Mp) hauv lub koob yees duab. Yog tias muaj tsawg heev ntawm cov chav no, koj yuav tau txais ib lub qhov muag tsis pom kev nrog lub suab nrov heev. Qhov teeb meem no feem ntau ntsib los ntawm cov tswv ntawm pheej yig smartphones thiab koob yees duab. Txawm tias muaj zog editors xws li Adobe Photoshop yuav tsis muaj peev xwm tshem tawm cov khoom cuav no. Yog tias koj xav tau tam sim ntawd tau txais kev txhaj tshuaj zoo heev, peb xav kom koj ua tib zoo saib ob qho tib si ntawm qhov xav tau ntawm megapixels thiab lub tswv yim ntawm cov qoob loo matrices.

Dab tsi txiav txim siab cov duab zoo

Hauv cov khoom siv niaj hnub no feem ntau, megapixels (lossis cov ntawv luv - mpx, Mp, Mp) ntau dhau, thaum cov tuam ntxhab sim txuag rau lwm qhov tsis muaj. RauPiv txwv li, ntawm lub cev loj ntawm matrix.

Nyob rau hauv cov hnub ntawm kev yees duab yees duab, lub tswvyim ntawm "tag nrho cov thav duab" tshwm sim, nws yog txuam nrog 35 hli zaj duab xis siv los ua ib qho photosensitive. Nrog rau qhov tshwm sim ntawm cov koob yees duab digital, tom kawg tau hloov los ntawm matrix. Tab sis nws cov khoom lag luam kim dua, yog li cov tuam txhab pib tsim cov khoom siv stripped-down. Qhov no yog li cas cov qoob loo tshwm sim - qhov piv ntawm txoj kab uas hla ntawm ib tug tag nrho ncej rau kab pheeb ces kaum ntawm ib tug me matrix.

Qhov kev ntsuas no cuam tshuam, ua ntej ntawm tag nrho, qhov feem pua ntawm cov duab pom yuav poob rau hauv tus ncej, thiab hom qoob loo ntawm cov duab yav tom ntej. Raws li cov coefficient nce, lub suab nrov nce, lub kaum sab xis saib qis. Cov duab coj los ntawm lub koob yees duab nrog lub koob yees duab puv npo yuav ntau zaus pom tseeb thiab zoo dua. Tsis tas li ntawd, thaum yuav lub koob yees duab, koj yuav tsum tau them sai sai rau qhov focal ntev, cov yam ntxwv uas cuam tshuam ntau rau lub lens.

Ib me ntsis ntxiv txog matrix daws teeb meem

Thaum twg koj xav tau ntau dua megapixels (ua luv li Mp)? Yog hais tias koj yuav zoo heev rau lub neej yav tom ntej duab, piv txwv li, rau luam ntawv yees duab wallpapers. Lawv tus lej ntau dua, cov duab muaj zog tuaj yeem raug cropped yam tsis muaj kev poob zoo. Ntxiv pixels yuav los ua ke thaum tua ib yam khoom los ntawm qhov deb, nws yuav ua tau kom coj nws los ze zog thaum kho.

Lwm yam yog qhov nce ntawm cov cim xeeb nyob hauv xov xwm thiab lub sijhawm ua haujlwm ntawm cov duab tshwm sim. Feem ntau, tus kws yees duab novice yuav muaj kev daws teeb meem txaus ntawm 8-13 megapixels (hauvnpe, Mp). Thaum luam tawm cov ntawv tshaj tawm txoj kev, piv txwv li, qhov kev daws teeb meem tsis siab npaum li lawv nyob ntawm qhov siab thiab cov neeg saib saib lawv nyob deb.

Siv qhov xaus

Los ntawm kab lus no, cov neeg nyeem tau kawm paub tias megapixels yog dab tsi (ua luv, Mp, Mp lossis mpx), cov ntsiab lus no cuam tshuam li cas rau kev yees duab. Txawm hais tias nws tsim nyog yuav lub koob yees duab nrog ntau ntawm cov ntsiab lus no nyob ntawm cov haujlwm uas koj yuav siv cov khoom siv yees duab. Yog tias koj lub hom phiaj yog kom tau txais kev txhaj tshuaj zoo rau cov duab me me (xws li A4), nws yog qhov zoo dua los ua tib zoo mloog lwm yam, cov yam ntxwv tseem ceeb ntawm lub koob yees duab tau tham saum toj no.

Yog tias koj npaj yuav luam cov ntawv loj lossis loj koj cov duab, koj yuav tsum nyiam cov khoom siv nrog ntau megapixels. Nyob rau hauv txhua rooj plaub, koj tsis tas yuav them nyiaj tshwj xeeb rau qhov ntsuas no - nws yog qhov zoo dua los yuav lub lens zoo lossis cov ntxaij lim dej. Qhov tseeb ntawm daim duab yog cuam tshuam ntau dua los ntawm kev txawj ntawm tus kws yees duab thiab cov chaw tsim nyog rau cov xwm txheej tua ntau dua li cov pixels hauv lub cuab yeej.