Kev tswj ntawm kev kaw qhov nrawm thiab qhov aperture ntawm Nikon D3100 lub koob yees duab muaj nyob hauv hom M, P, S thiab A. Ntxiv mus, koj tuaj yeem ua tiav tib cov kev sib txuam nrog cov sib txuas sib txawv ntawm aperture thiab shutter tus nqi ceev. Lub tshuab kaw hluav taws xob nrawm nrawm thiab lub apertures loj muag cov ntsiab lus tom qab thiab khov rau cov ncauj lus, thaum lub zog qeeb qeeb thiab apertures me me nqa tawm cov ntsiab lus tom qab thiab plooj txav cov khoom.
Shutter-ua ntej lub tsheb (S)
Hauv hom no, lub koob yees duab tso cai rau koj los tsim kev kaw lub nrawm dua, thiab tom qab ntawd cia li kho cov aperture tus nqi rau kev pom zoo tshaj. Lub tshuab kaw hluav taws xob nrawm nrawm yuav tsum tau siv kom khov rau qhov txav ntawm cov khoom, thiab lub tshuab hluav taws xob qeeb yuav tsum siv qhov muag plooj nrog cov xov hluav taws xob lossis kom ntes tau ua kom pom kev thaum hmo ntuj. Txhawm rau ua qhov no, teeb tsa hom hu rau S thiab xaiv qhov hloov ceev los ntawm tig cov lus txib hu. Lub tshuab kaw yuav ua rau pom cov ntaub ntawv thiab cov duab pom. Tom qab ntawd koj tuaj yeem tsom thiab coj ib daim duab.
Nws Pib Qhov Tseem Ceeb (A)
Nyob rau hauv hom aperture ua ntej hom, tus neeg siv xaiv tus nqi, thiab lub koob yees duab teeb tsa qhov kev ntsuas hluav taws xob zoo tshaj plaws rau cov teeb meem tau hais tseg. Qhov aperture loj dua thiab qis dua f-naj npawb yuav pab ua kom plooj cov khoom nyob rau hauv pem hauv ntej thiab tom qab kev kawm kom pom tseeb. Cov kev teeb tsa no tau siv zoo tshaj plaws thaum tua cov duab yav dhau los thiab kev plooj ua rau tom qab. Qhov apertures me thiab cov ntawv f loj loj hlais rau tom qab thiab cov lus qhia txog pem hauv ntej, zoo tagnrho rau kev thaij duab toj roob hauv pes.
Txhawm rau pib tua nyob rau hauv hom no, koj yuav tsum tig lub Nikon B3100 hom hu rau txoj haujlwm A. Tom qab ntawd lub koob yees duab ua kom koj xaiv lub aperture, nws tus nqi raug tso tawm ntawm cov ntaub ntawv screen. Tig lub xov tooj hu kom xaiv lub plhaw yam ntxim nyiam, tom qab ntawd tsom thiab tua.
Phau ntawv hom M
Nyob rau hauv hom no, lub kaw hluav taws xob ceev thiab aperture tau teeb tsa los ntawm kws yees duab. Lub ntaus hu yuav tsum tig mus rau M txoj hauj lwm, thiab tom qab ntawd tus taw qhia kis yuav tsum raug kuaj xyuas. Nyob rau hauv qhov kev tshwm sim uas lub lens tau nruab nrog lub tshuab microprocessor, thiab cov ntsuas hluav taws xob tau hloov pauv txawv ntawm cov tsis siv neeg tsis siv neeg, qhov taw qhia kev sib kis yuav qhia tau tias daim duab yuav dhau-los yog tsis pom. Yog hais tias cov kev txwv ntawm qhov ntsuas qhov ntsuas lub ntsuas pa ntsuas dhau qhov ntsuas, ntsuas qhov pib ntsais. Nws tuaj yeem pom ntawm cov ntaub ntawv screen ntawm lub koob yees duab zoo li hauv viewfinder.
Hauv phau ntawv hom, koj tus kheej xaiv qhov kev hloov kaw hauv qhov ntau ntawm 30 txog 1/4000 thib ob, koj kuj tseem tuaj yeem tsim qhov parameter "teeb pom kev sib kis", tom qab ntawd lub shutter yuav qhib rau lub sijhawm ntev thaum nws tso khawm tuav. Lub diaphragm tau teeb tsa los ntawm nias lub pob nrog nws cov duab thiab tig lub suab tswj. Aperture thiab shutter tus nqi ceev tau qhia nyob rau hauv cov ntaub ntawv tso saib thiab hauv cov koob yees duab ntawm lub ntsej muag saib.
