Lub DSLR yog kev npau suav ntawm ib tus kws yees duab kev lom zem uas xav tau coj los yees duab. Cov cuab yeej no tsis pheej yig, yog li koj yuav tsum ua lub luag haujlwm zoo thaum muas lub koob yees duab.
Cov Lus Qhia
Kauj ruam 1
Lub koob yees duab ua lej
Qhov tseem ceeb tshaj plaws hauv DSLR yog cov duab zoo, uas nyob ntawm hauv matrix. Txheeb xyuas tias lub lev ua haujlwm tau zoo, koj yuav tsum tua tag nrho cov suab nrov txo kev cuam tshuam, tsim kev nkag siab mus rau tus nqi qis tshaj plaws, tua tawm tsis siv neeg tsom mus thiab teem caij phau ntawv raug hom.
Yog tias tsis hle lub lens, siv peb koob txhaj ntawm lub ntsuas hluav taws xob sib txawv ntawm 1/3 thib ob, 1/60 thib ob, thiab 3 vib nas this. Yog tias tsis muaj cov ntsiab lus hauv thawj daim duab, tom qab ntawd mus rau daim duab thib ob. Yog tias koj tsis pom qhov txho xim ntsuab, xim ntsuab lossis xim liab rau nws, tom qab lub koob yees duab kuj tseem dhau theem no tiav. Qhov tseem ceeb tshaj plaws yog qhov raug ntev ntev. Cov cwj pwm yog qhov tsis muaj ntau tshaj 6 teev ntawm cov xim sib txawv. Yog tias muaj ntau lub ntsiab lus zoo li no, tom qab ntawv txhoj muaj cov xaum tsis zoo thiab nws yog qhov zoo dua rau tsis kam yuav lub koob yees duab ntawd.
Kauj ruam 2
Lub koob yees duab optics
Ua ntej kuaj xyuas cov optics, pab kom tau ib qho tshuaj tiv thaiv AF, qhib lub iris tag nrho. Autofocus yuav tsum nyob rau hauv qhov chaw metering hom, thiab lub koob yees duab nws tus kheej yuav tsum nyob rau hauv aperture thawj hom.
Nqa qee cov duab ntawm daim ntawv loj loj, nco ntsoov tias lub koob yees duab nruj me ntsis mus rau lub dav hlau ntawm daim ntawv loj loj. Kwv yees cov ces kaum ntawm daim duab siv cov digonal. Yog hais tias tus plooj mus zoo li qub los ntawm lub chaw rau ib sab, tom qab ntawd kho qhov muag tseem ua haujlwm zoo.
