Xaiv lub koob yees duab sab xis tsis yog txoj haujlwm yooj yim. Tom qab tag nrho, nws yog qhov tsim nyog tsis tas yuav pom qhov yooj yim loj hauv lub koob yees duab. Nws tseem yog qhov tseem ceeb los piv nws cov peev txheej kev nrog qhov uas koj xav tau ntawm nws.
Txhawm rau xaiv lub koob yees duab raug, koj yuav tsum tau siv sijhawm ntev los kawm cov qauv uas muaj nyob rau ntawm kev ua lag luam.
Yog li, piv txwv li, yog tias koj tsuas xav tau lub koob yees duab rau kev tsim cov duab "kev nco txog" cov tub ntxhais hluas, koj yuav tsum them sai sai rau cov ntawv me me, ua kom "xoom npum". Lawv tseem me me kom yooj yim rau siv thiab muaj cov tshuaj ntsuam daws teeb meem zoo. Txawm li cas los xij, yog tias koj xav tau kev tshaj lij kev tshaj lij, cov qauv no tsis yog rau koj. Hauv qhov no, koj zoo dua xaiv qhov SLR digital koob yees duab. Txhawm rau kom tau txais cov duab zoo, meej thiab zoo, koj yuav tsum xyuam xim rau cov yam ntxwv ntawm lub koob yees duab lub koob - cov no yog qhov tob thiab rhiab. Qhov siab dua cov ntsuas no, cov duab zoo dua koj yuav tau txais.
Cov xim yuav tsum tau them rau lub koob yees duab lub lens. Hauv cov koob yees duab me me, lawv tau txhim tsa thiab txuas mus rau qhov luv luv, uas tsis muab qhov xav tau qhov ntev ntawm cov lus thiab qhov sib txawv. DSLR lossis cov koob yees duab ua ke tuaj yeem muaj ob qho teeb tsa ua lub lens thiab tshem tau lub lens, uas ua rau ntau tus neeg yees duab lub peev xwm nce. Cov qauv no tuaj yeem muaj ob qhov ntev thiab sib txawv ntawm qhov ntev focal - tsau thiab zoom, ua ntu zus. Koj tuaj yeem xaiv txhua tus - ob leeg zoo. Yog tias koj xav tau ua haujlwm nrog cov ntsiab lus zoo, nws yog qhov zoo dua los xaiv lub lens nrog lub zog loj.
Qhov sib luag tseem ceeb tshaj plaws thaum xaiv lub koob yees duab yog Cov Duab Lub Taub Hau Ruaj. Kev ruaj khov tuaj yeem ua tiav ntawm ob txoj kev. Ib ntawm lawv yog nqa tawm siv lub lens ua haujlwm. Thaum vibrating, nws hloov kom lub nqaj ntawm cov duab tshav ntog ntog ntawm qhov sib luag hloov pauv nws txoj haujlwm. Qhov no yuav pab ua kom tshem tawm ntawm plooj thaum tua. Qhov txheej txheem thib ob ntawm kev ruaj khov yog nce raws qhov kev hloov pauv ntawm qhov kev ntsuas ntawm nws tus kheej.
Tus viewfinder tseem yog qhov tseem ceeb xav txog thaum xaiv lub koob yees duab. Hauv cov qauv niaj hnub, tsuas yog 4 hom ntawm lawv - kua siv lead ua, hluav taws xob, kho qhov muag thiab tsom iav. Hom kev Viewfinder tsis tau xav txog hauv cov duab zoo, tab sis nws tseem tseem ceeb heev rau kev tau txais cov duab zoo. Yog tias koj tab tom yuav yuav lub koob yees duab nrog lub tsom iav LCD, nco ntsoov nco ntsoov tias yuav tsum muaj LED teeb taws rov qab. Nws yog qhov tsim nyog kom cov zaub tsis "dig muag" hauv lub hnub thiab dhau ntawm nws koj tuaj yeem pom cov khoom ntawm qhov tua. Lub tshuab hluav taws xob saib kom yooj yim dua vim tias lub qhov muag tso rau lub qhov muag qhov muag tsom qhov muag, uas muab kev tiv thaiv los ntawm lub hnub thiab muaj kev nplij siab ntau dua thaum thaij duab. Optical viewfinders feem ntau pom ntawm cov duab thaij duab qub. Thaum kawg, SLR viewfinder yog lub kaw lus nyuaj nrog cov qhov muag, pentaprism, lub tsom iav uas lub cev muaj zog thiab lub lens nws tus kheej. Lub hauv paus ntsiab lus ntawm kev ua haujlwm tsis yog qhov nyuaj: los ntawm lub lens nrog kev pab ntawm txhua lwm cov ntsiab lus, cov duab xa mus rau qhov muag pom.
Lawm, ntau txoj haujlwm ntawm tus qauv muaj thiab qhov dav dav nws cov peev xwm kev, qhov ntau kim nws yog.
