300 ppi x 7 ntiv=2, 100 pixels thiab 300 ppi x 5 ntiv tes=1, 500 pixels. Yog li, yog tias koj muaj daim duab digital uas ntau dua lossis sib npaug li 2, 100 x 1, 500 pixels, ces nws yuav luam tawm ntawm 7 "x 5" daim ntawv ntawm 300 ppi lossis ntau dua.
pes tsawg megapixels yog 1500 pixels?
1, 500(2, 100)=3.15 lab pixels, los yog 3.15 megapixels.
pixels txhais li cas hauv qhov loj?
Pixels, abbreviated li "px", kuj yog ib chav ntsuas uas feem ntau siv hauv cov duab thiab lub vev xaib, sib npaug rau roughly 1⁄96 nti (0.26 mm) Qhov ntsuas no yog siv los xyuas kom meej ib lub ntsiab lus yuav tso saib raws li qhov loj me txawm tias qhov kev daws teeb meem zoo li cas rau nws.
Puas siab dua lossis qis dua pixel zoo dua?
Cov kev daws teeb meem siab dua txhais tau tias muaj ntau pixels ib nti (PPI), ua rau cov ntaub ntawv pixel ntau dua thiab tsim kom muaj cov duab zoo nkauj. Cov duab nrog cov kev daws teeb meem qis dua muaj tsawg dua pixels, thiab yog tias ob peb pixels loj dhau (feem ntau yog thaum ib daim duab stretched), lawv tuaj yeem pom zoo li cov duab hauv qab no.
Puas ntau pixels txhais tau tias cov duab zoo dua?
Rau kev sib koom los ntawm e-mail, daim duab loj ntawm 640 los ntawm 480 pixels, lossis 0.3 megapixel, feem ntau yog qhov zoo tshaj plaws: loj txaus los saib ntse ntawm lub computer screen tab sis me me txaus rau upload lossis rub tawm sai. Rau cov ntawv luam tawm, yuav tsum muaj kev daws teeb meem ntau dua, thiab qhov loj dua qhov luam, qhov sib txawv ntau dua qhov pixel suav ua
