Tej zaum koj tau pom ntau cov duab nyob hauv uas tsuas yog cov ncauj lus tseem ceeb tau pom meej, thiab keeb kwm yav dhau los yog qhov muag plooj. Cov no yog cov tseem duab xwb. Nws yog rau cov duab thaij duab tias cov txheej txheem no feem ntau haum. Txawm hais tias, qhov tseeb, hauv txoj kev no koj tuaj yeem thaij ntau yam khoom thiab sijhawm. Koj tsuas yog xav tau kom tswv ib qho kev xav yooj yim - cov diaphragm. Kawm tias nws yog dab tsi thiab yuav siv nws li cas kom ua tiav qhov pom kev tom qab hauv qhov tsab xov xwm no.
Tsim nyog
Lub koob yees duab, qauv lossis lub ntsiab lus rau kev tua
Cov Lus Qhia
Kauj ruam 1
Yeej, qhov aperture yog qhov qhib ntawm lub lens. Lub qhov no tuaj yeem qhib thiab kaw. Lub diaphragm cuam tshuam dab tsi? Ua ntej, nws tswj cov nyiaj ntawm lub teeb kis. Qhov dav koj lub aperture tau qhib, qhov duab ci zog yuav yog, thiab daim npav hluav taws xob ceev koj tuaj yeem siv tau ceev dua.
Kauj ruam 2
Thib ob, lub diaphragm cuam tshuam rau qhov tob ntawm daim teb, i.e. tob ntawm daim teb. Thaum lub aperture qhib, tsuas yog cov ncauj lus uas lub koob yees duab tau tsom ntsoov tseem ua kom pom tseeb. Cov xim keeb kwm yav dhau los thiab pem hauv ntej yuav raug plooj. Nov yog qhov peb xav tau.
Kauj ruam 3
Txhawm rau thaij duab nrog qhov muag plooj, muab koj lub koob thaij duab tso rau hauv hom aperture អាទិភាព. Cov. tig lub ntaus ntawv hu mus rau tsab ntawv “A. Tam sim no qhib lub diaphragm ntau li ntau tau. Txhua lub koob yees duab ua qhov no txawv, yog li nyeem cov lus qhia.
Kauj ruam 4
Thaum qhov aperture tau teeb tsa, ua kom pom tseeb ntawm lub ncauj lus thiab nias lub tshuab kaw. Nqa qee qhov kom txhaj tshuaj. Qhov no yog qhov tsim nyog thiaj li xaiv qhov zoo tshaj plaws ntawm ob peb. Saib ntawm daim duab. Koj tau txhaj koob tshuaj tivthaiv zoo nrog qhov muag plooj plooj zoo nkauj thiab lub ntsej muag ntse ntse.
