Cov ntsiab lus ntawm kev ua haujlwm nrog lub koob yees duab, hom tseem ceeb uas txhua tus kws yees duab xav tau: aperture qhov tseem ceeb thiab qhov tob ntawm qhov chaw

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

Lub DSLR muaj ntau hom kev kawm uas koj yuav tsum kawm, nkag siab tias lawv ua haujlwm li cas thiaj li tsim tau cov duab zoo tiag tiag.

Txhua qhov chaw muaj nyob hauv lub koob yees duab tuaj yeem kawm los ntawm kev sim thiab ua yuam kev. Tsuas yog nws yuav siv sijhawm ntev dua yog tias koj tam sim nyeem txog cov kev siv cov qauv thiab lawv lub hom phiaj.

Dab tsi yog hu ua qhov tob ntawm kev yees duab, thiab nws lub hom phiaj yog dab tsi?

Ua ntej tshaj, koj yuav tsum nkag siab tias lub koob yees duab tsom mus rau qhov deb. Nyob rau tib lub sijhawm, dab tsi dhau ntawm nws lub peev xwm tseem tab tom plooj. Ua li no, txhua yam khoom uas nyob deb tib yam li qhov kev kawm yuav ntse npaum li qhov kev kawm.

Yog tias koj saib ib daim duab, nws tam sim ntawd paub meej tias tsis muaj ciam teb meej thaum daim duab meej poob nws qhov ntse. Kev hloov pauv feem ntau yog du thiab tsis pom kev.

Daim duab qhia pom qhov pom qhov tseem ceeb ntawm kev tua.

Clear feem ntaucov khoom uas lub koob yees duab tsom, nrog rau cov khoom nyob ze (thaum tag nrho cov uas nyob deb) yog qhov muag plooj. Qhov tob ntawm thaj chaw nyob ntawm ntau yam:

• ntau yam mus rau qhov chaw uas lub koob yees duab tsom;
• focal ntev ntawm lub koob yees duab nws tus kheej;
• qhib aperture.

Cia peb mus saib txhua rooj plaub.

Lub tswv yim ntawm aperture qhov tseem ceeb hom, thiab nws siv rau lub hom phiaj dab tsi?

Yuav kom nkag siab tias hom aperture tseem ceeb yog nyob rau hauv lub koob yees duab, koj yuav tsum xub paub tias nws yog cov cim los ntawm cov ntawv luv A thiab Ay, uas nyob hauv lub koob yees duab cov ntawv qhia zaub mov. Qhov no tso cai rau koj hloov qhov dav aperture. Qhov dav aperture txiav txim siab npaum li cas hnub ci nkag mus rau hauv tus ncej. Qhov dav nws qhib, lub teeb ntau nkag rau hauv (thiab vice versa). Automation yuav xaiv qhov shutter ceev siv. Qhov no yog qhov tseem ceeb ntawm aperture yog nyob rau hauv lub koob yees duab.

hom no feem ntau yog siv qhov yuav tsum tau tua ceev. Piv txwv li, thaum tua kev tshaj tawm, kev ua kis las, kev ua yeeb yam hauv huab cua, thiab lwm yam. Thaum lub ntsiab lus yuav tsum tau yees duab yog nyob rau hauv tsab ntawv tsa suab, tsis muaj sij hawm mus fiddle nrog cov chaw rau lub sij hawm ntev, vim hais tias txoj kev no koj yuav nco ib tug heev nthuav thiab tseem ceeb txhaj tshuaj. Yog li ntawd, nws tsim nyog nkag siab yuav ua li cas siv qhov tseem ceeb ntawm aperture, vim tias ua haujlwm nrog hom no, koj yuav tsum tswj hwm nrog ib lub pob xwb, uas siv sijhawm tsuas yog milliseconds.

Kuj, hom no siv tau thaum mus ncig, tsis tas txhawj txog teeb pom kev zoo, lub koob yees duab nws tus kheej yuav ua rau koj, koj tsuas yog xav tauib co aperture manipulation.

Daim duab hauv qab no qhia txog qhov chaw aperture ntawm f/11.

Cov keeb kwm yav dhau kuj tseem nyob ntawm hom no. Thaum lub aperture qhib, lub keeb kwm yav dhau yog qhov muag plooj, tsom rau ib qho tshwj xeeb hauv daim duab. Thaum koj kaw qhov aperture, txhua yam khoom thiab ib puag ncig hauv daim duab yuav ntse thiab meej.

Ob daim duab (saum toj no thiab hauv qab) qhia cov piv txwv ntawm f / 11 / 1 / 400 sec / ISO 400 aperture settings. Thawj yog roob toj roob hauv pes, nrog rau kev tsom mus rau pob zeb (lawv npaj yuav thaij duab). Ntawm qhov thib ob - qhov tshwm sim.

Yog li, qhov qhib aperture feem ntau yog siv los tsim cov duab portrait, thaum lub kaw yog siv los tua toj roob hauv pes. Nws tseem yuav tsum tau nco ntsoov tias nrog lub kaw aperture, lub shutter ceev yog ntev dua. Lub sijhawm no, lub koob yees duab yuav tsum tuav kom sib npaug, tsis muaj kev sib tw, tab sis nws yog qhov zoo dua los siv lub koob yees duab.

tua cov khoom hauv kev txav

Aperture Priority tso cai rau koj "kho" cov ntsiab lus lossis ua kom pom qhov muag plooj. Qhov tshaj plaws yog tias thaum lub diaphragm nyob rau hauv txoj hauj lwm qhib, ntau lub teeb nkag mus rau nws. Qhov no tso cai rau koj los thaij duab zoo txawm tias huab cua huab cua. Lub shutter ceev yuav nrawm dua, uas txhais tau tias koj tuaj yeem ntes cov khoom txav mus los yam tsis muaj qhov muag plooj.

Ib qho piv txwv ntawm kev tua cov khoom txav tau pom hauv daim duab hauv qab no.

Tab sis kuj tseem muaj qhov yuav tsum tau ua kom pom tseeb tom qab ntawm daim duab. Piv txwv li, yog tias koj xav tau tsom mus rau qee tus neeg hauv cov neeg coob coob, thiab tib lub sijhawm muaj lub teeb me ntsis hauv qhov chaw tua. Hauv qhov xwm txheej no, koj yuav tsum kaw lub aperture los ntawm kev ua kom lub shutter ceev. Yog li, los ntawm kev ua raws li cov khoom txav tau xaiv, peb tuaj yeem thaij duab qhov chaw uas keeb kwm nyob ib puag ncig cov khoom yuav plooj, tab sis nws yuav pom tseeb.

Yog li, yam tsis muaj kev tswj hwm hom aperture, daim duab yuav tsis ci thiab nthuav tawm txaus.

Teeb thiab iris

Aperture qhov tseem ceeb hom yuav tsum tau xaiv nyob ntawm seb lub teeb pom kev zoo. Piv txwv li, yog tias koj yuav tsum tau yees duab hauv chav tsaus nti, nws yog qhov zoo dua los ua kom nws qhib kom cov duab pom tseeb dua. Thiab nrog lub aperture ntawm f/2.8 lossis f/3.5, nws muaj peev xwm tua nyob rau hauv ib qho chaw tsaus, ua tau zoo heev, zoo dluab.

Ntawm no yog kev tua hmo zoo li.

Example

Ib qho piv txwv yuav raug tua hauv tsev ua yeeb yam lossis kev hais kwv txhiaj. Nrog lub lens zoo uas tuaj yeem ntes cov khoom nyob deb, koj tuaj yeem qhib lub aperture kom tso rau hauv lub teeb ntau dua, thiab ua kom pom kev zoo yam tsis muaj kev cuam tshuam cov neeg ua yeeb yam lossis cov kws ntaus nkauj los ntawm lawv txoj haujlwm, flickering nyob rau hauv pem hauv ntej ntawm koj ob lub qhov muag, raws li cov kws yees duab nrog cov khoom siv tsis zoo..

Piv txwv li, kev ua yeeb yaj kiab hauv lub rooj sib tham yog qhia hauv daim duab hauv qab no. Aperture f/2, 8 tau siv.

Hauv qhov xwm txheej no, daim duab yuav ntse thiab meej, tso cai rau koj pom txhua yam koj xav tau yam tsis muaj kev siv zog ntxiv.

Zoo kawg

Yog li los ntawm kev kawm paub qhov tseem ceeb ntawm qhov pom, nkag siab tias nws cuam tshuam dab tsi hauv kev txhaj tshuaj, thiab siv nws raws sijhawm, koj tuaj yeem tsim qhov kev txhaj tshuaj zoo kawg nkaus, mloog zoo.