Thaum Yuav Mus Ib Lub Yees Kom Zoo, Nws Tseem Ceeb Npaum Tau Qhov Sib Thooj
Muaj ntau lub koob yees duab (thiab cov ntse smartphone) muaj xws li qee cov duab ntawm cov duab stabilization (YOG) los mus txo cov kev xav tawm tsam uas tau tshwm sim los ntawm lub thawv txhais tes lossis lub zog ntawm lub cev. Qhov feem ntau yooj yim yog tripod, tiam sis nws muaj ob hom kev yees duab uas siv nws cov kauj ruam ntxiv: optical thiab digital.
Image stabilization tseem ceeb rau txhua lub koob yees duab, tab sis nws yog tshwj xeeb tshaj yog tseem ceeb heev rau cov uas muaj qis shutter qeeb los yog ntev optical zoom lo ntsiab muag. Thaum twg lub lens yog zoomed rau nws siab tshaj plaws magnification, nws yuav rhiab heev txawm tias lub slightest suab.
Qee cov lag luam muab ib lub npe ntawm lawv cov duab thev naus laus zis. Sony dubs nws SteadyShot thaum Panasonic hu lawv Mega OIS thiab Pentax Tsuas txo . Txhua tus muaj lawv cov nuances tab sis lawv ua tau tib lub haujlwm.
Nyob rau hauv txhua rooj plaub, koj yuav tsum nco ntsoov peer qab lub lag luam jargon thiab saib cov lus qhia. Nws yuav tsum qhia seb puas muaj cov koob yees duab "optical or digital stabilization" los yog ob qho tib si.
Optical Image Stabilization
Optical duab stabilization (OIS) yog qhov zoo tshaj plaws ntawm cov duab stabilization. Camcorders nrog stabilization duab stabilization feem ntau feature me me gyro-sensors hauv lub lens uas ceev nrooj daim ntawm lub lens iav kom tawm suab tawm ua ntej cov duab hloov dua siab tshiab rau ib daim ntawv.
Ib qho uas siv cov duab thev duab siv los kho qhov muag pom tias nws yog ib qho txav ntawm sab hauv lub lens.
Qee cov lag luam camcorder cia koj tig qhov muag stabilization rau hauv thiab tawm, lossis muaj ntau hom kev pabcuam rau ntau yam ntawm lub koob yees duab zog (xws li ntsug lossis kab rov tav).
Cov Yeem Duab Xeem
Tsis zoo li cov tshuab fais fab, digital duab stabilization (tseem hu ua electronic stabilization, los yog EIS) siv software technology los txo cov kev cuam tshuam ntawm cov plaub ntug hauv yees. Nyob ntawm tus qauv, qhov no yuav ua tiav rau ntau txoj hauv kev.
Qee qhov camcorders yuav xam cov kev cuam tshuam ntawm koj lub cev kev siv zog thiab siv cov ntaub ntawv no los kho qhov pixels ntawm lub koob yees duab duab sensor tab tom siv. Nws siv cov pixels los ntawm cov kab zauv pom dhau los ua rau tsis dhau txoj kev hloov thav duab los ntawm cov ncej.
Rau cov neeg siv digital camcorders, digital duab stabilization feem ntau tsis zoo dua kev kho qhov muag. Muab qhov ntawd, nws them nyiaj kom zoo thaum lub camcorder hais kom muaj "kev ruaj ntseg duab." Nws yuav tsuas yog ntawm cov ntau yam.
Tseem muaj software programs uas tau thov ib lub lim dej rau lub yees duab txawm tias tom qab nws tau raug coj mus, los ntawm kev nrhiav cov pixel taw thiab kho cov duab. Txawm li cas los xij, qhov no tshwm sim hauv ib qho duab me me vim yog txo qis dua los sis muaj kev sib txoos ua kom tiav rau hauv qhov poob lawm.
Lwm Cov Yees Duab Nruag Tshuab
Txawm hais tias optical thiab digital stabilization feem ntau yog, lwm tus yees sim mus kho tsis ruaj yees duab dhau lawm.
Piv txwv, muaj sab nraud cov tshuab uas tswj lub cev kom tag nrho lub koob yees duab tsis txhob coj nws mus rau sab hauv lub koob yees duab lens. Txoj kev ua haujlwm no yog los ntawm kev muaj lub gyroscope txuas mus rau lub cev ntawm lub koob yees duab los ua tus stabilizing. Cov no feem ntau pom thaum thaij duab los ntawm lub tsheb mus los.
Lwm yog qhov hloov suab ntawm CCD (OTCCD), uas yog siv rau hauv kev tshawb fawb txog kev ruaj ntseg.