YOptical vs Digital zoom
Optical zoom thiab digital zoom yog ob lub ntsiab lus koom nrog hauv kev yees duab thiab yees duab. Ob lub tswv yim no yuav tsum to taub kom meej tias yog tus kws yees duab zoo lossis tus kws yees duab yees duab. Optical thiab digital zoom ntawm lub koob yees duab zoo heev cuam tshuam qhov zoo ntawm daim duab. Nws yog ib qho tseem ceeb kom paub thaum twg thiab yuav ua li cas siv cov kev xaiv no txhawm rau tsim cov duab lossis yees duab uas xav tau thiab zoo tshaj plaws. Tus kws yees duab zoo yeej ib txwm tswj hwm nws cov duab. Txhawm rau kom paub txog kev kos duab ntawm kev yees duab, kev nkag siab zoo ntawm cov ntsiab lus ntawm optical zoom thiab digital zoom yog qhov tseem ceeb thiab tseem ceeb. Hauv tsab xov xwm no, peb yuav tham txog dab tsi optical zoom thiab digital zoom yog, txoj hauv kev thiab cov tswv yim ntawm kev tau txais digital thiab optical zoom thiab lawv qhov sib txawv.
YOptical Zoom
Nyob hauv kev yees duab, tus kws yees duab raug cuam tshuam los ntawm cov xwm txheej uas nws yuav tsum nqa daim duab sawv deb heev ntawm qhov kev kawm. Nws tuaj yeem yog qhov chaw tsiaj qus, qhov dej tsaws tsag nyob deb uas tsis tuaj yeem mus ze lossis txawm tias qhov chaw txhaj tshuaj yuav raug cuam tshuam los ntawm tus kws yees duab. Ib txoj kev zooming yog xav tau rau tus kws yees duab thaij duab nrog cov ntsiab lus txaus ntawm nws. Txhua lub koob yees duab siv ib txheej ntawm lo ntsiab muag los tswj lub teeb uas ntog ntawm lub sensor lossis zaj duab xis. Hauv qee lub koob yees duab, muaj ib lub tswv yim los kho cov teeb ntawm lo ntsiab muag kom cov khoom nyob deb tuaj yeem zoomed hauv thiab thaij duab zoo. Qee qhov xwm txheej yuav xav kom lub yees duab nyob rau hauv lub kaum sab xis dav, nyob rau hauv cov ntaub ntawv no, lub kaw lus yuav zoomed tawm kom haum rau hauv daim duab. Txoj kev zooming hauv thiab tawm siv cov cuab yeej siv los txav cov lo ntsiab muag yog hu ua optical zooming. Feem ntau, hauv lub koob yees duab, lub khawm zoom muaj ob kawg; w thiab t. w stands for wide angle thiab t stands for telephoto. Nws yuav tsum tau muab sau tseg tias thaum ib tug duab yog zoomed nyob rau hauv thiab tawm ntawm qhov chaw ntawm lub lens, cov duab zoo li distorted. Qhov chaw nruab nrab lossis sab nraud nyob ntawm qhov chaw zoom yog ncab. Txawm li cas los xij, kho qhov muag zoom tsis muaj feem cuam tshuam rau cov duab zoo.
Digital Zoom
Digital zoom yog ua tiav raws li software. Nws tsis tas yuav muaj kev txav ntawm cov khoom siv kho qhov muag txawm li cas los xij. Hauv cov txheej txheem digital zooming, lub koob yees duab qoob loo ib feem ntawm cov duab tom qab ntawd cuam tshuam cov pixels nyob ze siv software inbuilt. Ib tug yuav xav tias qhov no yog sib npaug rau cropping cov duab hauv computer software. Tab sis, lub koob yees duab tuaj yeem phim cov xim ntawm cov pixels nyob ze kom kwv yees qhov txo qis ntawm cov duab. Tsis zoo li optical zoom, tsis muaj qhov cuam tshuam ntawm cov duab vim yog digital zoom.
Qhov txawv ntawm Digital Zoom thiab Optical Zoom yog dab tsi?
¤ Digital zoom tsuas yog siv cov txheej txheem software xwb, thaum kho qhov muag zoom siv cov txheej txheem kho vajtse kom zoom duab.
¤ Digital zoom muaj kev cuam tshuam loj rau cov duab zoo, thaum kho qhov muag zoom ua rau yuav luag tsis zoo.
¤ Optical zoom muaj nyob rau hauv ob lub koob yees duab digital thiab zaj duab xis, thaum lub koob yees duab digital zoom tsuas yog muaj nyob ntawm cov koob yees duab digital xwb.
¤ Optical zoom yog kim kim tshaj digital zoom.
