Aperture vs Shutter Speed
Aperture thiab Shutter Speed yog ob nqe lus uas ib txwm hais thaum tham txog kev yees duab, cov no yog ob ntawm ntau yam uas tuaj yeem cuam tshuam rau koj cov duab zoo. Aperture thiab Shutter Speed yog ob lo lus uas feem ntau nkag siab tsis zoo thiab siv yuav luag sib hloov. Txawm li cas los xij, lawv txawv thiab muaj qhov tseem ceeb hauv kev cuam tshuam tag nrho ntawm koj cov duab. Aperture thiab shutter ceev yog nyob ntawm lub teeb thiab siv nws los txhim kho cov yam ntxwv ntawm cov duab.
Yuav kom cov duab raug ntes rau hauv zaj duab xis, nws xav tau qhov pom kev. Muaj ob lub cuab yeej hauv lub koob yees duab los tswj lub teeb kom ncav cuag zaj duab xis hu ua shutter thiab aperture. Shutter khaws tag nrho lub teeb thaiv kom txog thaum koj nias nws lub pob. Nws qhib thiab kaw sai sai, luv luv cia lub teeb nkag mus rau sab hauv. Koj tuaj yeem tswj cov teeb pom kev nkag los ntawm kev nce lossis txo qhov nrawm nrawm. Lub teeb ncav cuag zaj duab xis tom qab dhau los ntawm qhov qhib me me hu ua aperture. Koj tuaj yeem tswj lub aperture qhib, tseem hu ua f-stop. F-stops me me txhais tau tias qhov qhib loj dua, thaum loj f-stops txhais tau tias qhib me me.
Ntev ntev ntawm 1 thib ob muab ntau lub teeb rau zaj duab xis dua li qhov raug 1/1000 vib nas this. Kev nthuav tawm yog txhua yam hais txog kev tswj cov shutter speeds thiab aperture qhib hu ua f-stops. Kev sib xyaw ntawm shutter ceev thiab qhib aperture tuaj yeem hloov kho cov duab tiav. Txij li thaum ob qho tib si aperture thiab shutter speeds raug suav nyob rau hauv nres, nws yog ib qho tseem ceeb kom muaj kev sib npaug ntawm ob. Yog tias koj tab tom nres ntawm qhov aperture, nws yog qhov zoo dua los nres rau lub kaw.
Ib txwm, qhov nrawm nrawm yuav tsum muaj lub aperture loj dua kom tso lub teeb txaus rau hauv lub koob yees duab, thiab lub kaw lus qeeb qeeb yuav xav kom lub aperture me me kom tiv thaiv lub teeb ntau dhau los ntawm lub koob yees duab. Yog tias koj tab tom tua nyob rau hauv lub teeb ci ntsa iab, koj yuav tsum ua kom lub siab shutter ceev kom cia me ntsis lub teeb nkag mus rau hauv lub koob yees duab. Kev tua cov khoom nyob ruaj ruaj lossis cov khoom txav qeeb tuaj yeem tua nrog lub kaw lus qeeb tab sis rau qhov khoom uas txav nrawm, koj xav tau lub shutter ceev ceev.
Yog tias koj yog tus pib thiab tsis xav kom koj tus kheej tsis meej pem nrog tag nrho cov lus no, nws yog qhov zoo dua los tuav lub koob yees duab nrog qhov teeb tsa semi-automatic.
Summary
• Shutter ceev thiab aperture yog qhov tseem ceeb hauv kev tswj cov teeb pom kev nkag mus rau lub koob yees duab.
• Aperture yog qhov qhib me me uas tso cai rau lub teeb rau hauv zaj duab xis thaum shutter ceev yog lub sijhawm ntev uas lub sensor raug teeb.
• Aperture thiab shutter speeds yog inversely proportional rau ib leeg thiab koj xav tau ib tug sib npaug ntawm ob tug kom ua tau raws li qhov xav tau.
