Vim li cas koj thiaj xav tau lub koob yees duab aperture

2024 Tus sau: Sierra Becker | [email protected]. Kawg hloov kho: 2024-02-26 05:10

Thaum yuav lub koob yees duab zoo, koj yuav tsum tsis txhob nres ntawm tus qauv teeb tsa. Hauv tsab xov xwm no, peb yuav piav qhia txog dab tsi ua haujlwm xws li aperture yuav tsum tau siv rau thiab siv nws lub peev xwm li cas.

Lub cev, lub aperture ntawm lub koob yees duab yog cov paj uas npog lub lens thiab cia nyob rau hauv ib tug npaum li cas ntawm lub teeb. Qhov siab dua qhov zoo ntawm lub lens, ntau cov paj tau teeb tsa rau ntawm nws, thiab qhov zoo nkauj dua qhov pom ntawm qhov muag pom tau tiav. Peb yuav tsis qhia koj hauv cov lus dab tsi cov duab koj tuaj yeem tau txais, tab sis peb yuav pom txhua yam pom.

Cov duab no yog cov menyuam yaus, thiab thaum xub thawj siab ib muag, cov duab yuav luag zoo ib yam. Tab sis nyob rau hauv thawj daim duab, peb kom meej meej pom tus tub nyob rau hauv lub keeb kwm yav dhau, thiab nyob rau hauv lub thib ob daim duab, lub keeb kwm yav dhau ntawm tus ntxhais yog tag nrho cov qhov muag plooj. Peb nco ntsoov tam sim ntawd tias qhov no nyob deb ntawm qhov siab tshaj plaws ntawm qhov muag plooj, thiab nws tsis tuaj yeem ua tiav cov nyhuv tib yam ntawm tes (hauv Photoshop).

Tam sim no cia peb piav qhia yuav ua li cas lub koob yees duab aperture tau teeb tsa hauv ob qho tib si. Nyob rau hauv thawj daim duab, lub aperture raug kaw, vim hais tias peb pom tag nrho cov duab kom meej. Ntawm daim duab thib oblub diaphragm yog qhib dua, uas yog vim li cas tus tub tsis pom. Peb tau txiav txim siab qhov no thiab nws yog qhov tseeb rau peb tias nrog qhov siab tshaj plaws qhib aperture peb tau pom qhov muag plooj, thiab nrog lub qhov kaw - qhov pom tseeb.

Hauv yuav luag txhua qhov xwm txheej, lub aperture ntawm lub koob yees duab tau qhia tias yog "f /" thiab tus lej, uas qhia tau hais tias qhov kev qhib siab ntawm qhov sib txawv. Thaum xub thawj, nws yuav nyuaj rau koj kom nco ntsoov txhua qhov tseem ceeb, yog li nws txaus kom paub tias tus lej tsawg dua, ntau qhov tom qab qhov muag plooj, thiab qhov loj dua, qhov zoo dua cov khoom hauv keeb kwm yav dhau pom. Daim duab hauv qab no qhia tau hais tias tus qauv muaj nuj nqis uas tam sim no txawm nyob hauv cov tshuaj ntxuav tais diav zoo tib yam. Koj tuaj yeem pom qhov aperture hloov pauv li cas nyob ntawm qhov ntsuas.

Txawm hais tias qhov tseeb tias qhov ua haujlwm tseem ceeb ntawm aperture tseem muaj nyob rau ntawm lub koob yees duab compact, nws tsis tuaj yeem ua tiav cov nyhuv ntawm qhov muag plooj tom qab ntawm lawv. Txhawm rau kom nkag siab qhov sib txawv, nws txaus los sim SLR thiab cov koob yees duab tshaj lij hauv kev ua haujlwm. Ntseeg kuv, qhov sib txawv ntawm qhov zoo yuav pom ntawm qhov muag liab qab. Thiab tus naj npawb ntawm cov haujlwm, kev teeb tsa yuav ua rau koj xav tsis thoob. Siv koj lub sijhawm los ua txhua yam hauv ib zaug thiab thawj zaug nrog txhua qhov kev ntsuas ntawm tus kheej, thiab tsuas yog tom qab ntawd xaiv hom phau ntawv thiab txuas lawv.

Daim duab nrog tus kab laum kom meej meej pom tias lub diaphragm qhib tag nrho. Cov duab zoo li no tuaj yeem nqa nrog txhua yam khoom siv, tsis hais lub npe - Nikon, Canon. Lub koob yees duab, qhov tseem ceeb tshaj plaws, yuav tsum yog SLR lossis kev tshaj lij.

Nyob rau hauv xaus, nws yog tsim nyog hais tias lub diaphragmLub koob yees duab tuaj yeem tsom mus rau ib qho kev kawm tshwj xeeb, ua kom pom tseeb thiab ua kom pom tseeb tom qab. Daim duab ladybug saum toj no qhia meej tias cov nyhuv no, vim tias koj tsuas pom cov kab, thiab qhov seem tsis tseem ceeb. Lub koob yees duab kaw aperture yog qhov tseem ceeb thaum thaij duab ntawm txoj kev, toj roob hauv pes, neeg coob coob, qhov twg koj xav kom tag nrho cov duab ua kom pom tseeb.

Raws li koj pom, tsis yog txhua yam nyuaj li qhov zoo li thaum xub thawj, tab sis ua ntej yuav mus kawm ntxiv txog kev yees duab, xyaum ua kom zoo rau theem no.