Cov kev khiav hauj lwm hauv paus ntsiab lus ntawm SLR koob yees duab

Ib qho ntawm feem ntau yuam kev novice kev pab txog yog lawv siab dhau heev lawm xav kom ua nyob rau hauv lub achievements ntawm niaj hnub siv tshuab. Forums nplooj siab rau cov duab, pomzoo dag rau cov tuaj tshiab. Piv txwv li, ib tug neeg muaj ib tug zoo kawg thiab xav mus kawm kom muab cov duab, tab sis nws tsis xav kom to taub cov duab. Nws vam tias nws brand tshiab SLR koob yees duab ua txhua yam rau nws, tab sis zoo duab yuav tsum tau nyob rau hauv lub tshuab, tab sis txuj ci tseem ceeb tsis muaj. Tom qab, ib tug aspiring kws yees duab tsis tu tsis tseg mus nrhiav no hobby, siv rau nws ib tug loj sum ntawm cov nyiaj (yuav SLR) los yog pib mus nyeem txog qhov tseeb photography. Peb tsab xov xwm yuav pab tau rau beginners thib ob qeb, uas yuav nthuav kom paub lub hauv paus ntsiab lus ntawm cov reflex ntawm nws txawv ntawm lub niaj zaus cov koob yees duab.

Ua ntej, nws yog ib qho yooj yim los hloov, nws yog ib lub zoo sib thooj ntawm cov tsos nyob rau hauv SLR koob yees duab thiab cov koob yees duab, nyob rau hauv tas li ntawd mus rau lub qhov ntev. Sony SLR koob yees duab piv rau pa cov koob yees duab loj loj qhov ntev. Tab sis DSLR ib yam nkaus hauv paus ntsiab lus. Yuav pib nrog, SLR koob yees duab pub tus kws yees duab mus saib cov duab nyob rau hauv tib txoj kev uas nws zoo nkaus li. A cov koob yees duab duab yog edited ua ntej nws nce mus txog cov kev tshuaj ntsuam, qhov no yog lwm qhov sib txawv ntawm lawv cov DSLRs. Lawv muaj nyob nruab nrab ntawm cov dluab thiab cov duab muaj tsis muaj ntxiv nyob ntawm tej thiab hluav taws xob qhov chaw, uas tej zaum yuav, nyob rau hauv txhua txoj kev distort cov duab.

SLR koob yees duab nyob rau hauv thiab hu ua daim iav raws li cov duab ntog rau hauv viewfinder tsuas kis tau los ntawm ib tug xov tooj ntawm lo ntsiab muag thiab rotating daim iav ntsia hauv lub koob yees duab. Vim hais tias ntawm no nws tsis yog distorted. Tab sis qhov no piav tsis tag nrho qhia cov ntsiab cai ntawm cov lag luam SLR koob yees duab. Yuav kom tau txais ib tug ntau ncauj lus kom ntxaws piav - taug txoj kev ntawm ib tug nqaj ntawm lub teeb, txoj kev kom peb daim duab. Tus thawj yam uas tus duab ntog rau hauv lens oboktiva muaj thiab yog refracted. Physics qhia txog qhov no los ntawm qhov tseeb hais tias koj muaj peev xwm kom tsis txhob los ua rau kom cov duab raws li koj nyiam. Tom qab cov zaj uas lub teeb ntawm lub lens, nws raug xa mus rau teb daim iav ntawm lub koob yees duab, ces nws tau txais rau lub refractive ncaj qha pentaprism viewfinder. Peb yuav hais nyob rau hauv lub viewfinder koj yuav saib tau lub rog xav txog ntawm dab tsi tshwm sim nyob rau hauv pem hauv ntej ntawm oboktivom. Ib txhia Nikon SLR koob yees duab yuav muaj ob oboktiva - ib tug rau taij thiab ib qho rau kev saib ua ntej duab.

Yuav ua li cas tshwm sim rau lub caij ntawm photographing?

Tom qab noj qhov tseeb txoj hauj lwm ntawm lub lens thiab nyob rau hauv txoj kev yog, tus kws yees duab presses lub shutter khawm. Nyob rau tib lub sij hawm, thawb lub rocker TIG daim iav mus, thaiv cov hlab cov viewfinder. Thiaj li, nyob rau hauv lub sij hawm ntawm shooting nws yuav tsis pom dab tsi. Ces muaj ib lub beam ntawm lub teeb mus tib txoj li thaum koj saib cov duab los ntawm lub viewfinder tab sis es tsis txhob reflected nyob rau hauv lub viewfinder, nws tshwm sim rau cov photosensitive caij. Nyob rau hauv SLR koob yees duab nws yog ib tug matrix (ib tug duab sensor). Nyob rau hauv lub xab npum dish ntawm zaj duab xis nws yog tiag heev zaj duab xis. Lub sij hawm thaum lub sij hawm uas tus shutter yog qhib, lub shutter yog hu ua latency.

Nyob rau hauv no tsab xov xwm, peb ntsia tus qauv tswvyim ntawm kev ua hauj lwm reflex cov koob yees duab nrog ib lens.