Lub sijhawm sib kis, uas yog, lub sijhawm thaum lub koob yees duab kaw, yog hu ua shutter speed, los ntawm lo lus "tuav" (kaw kaw). Ob lub ntsiab lus tseem ceeb ntawm no. Ua ntej, qhov nrawm nrawm nrawm yog cuam tshuam nrog cov txheej txheem ntawm kev tau txais lub teeb ci ntawm lub matrix lossis zaj duab xis, thiab yog li ntawd cuam tshuam ntau heev nrog lub diaphragm. Thib ob, kev sib kis tseem yog txheej txheem ntawm irradiation ntawm cov khoom siv lub teeb ci, uas yog, lub teeb ntom ntom ntawm cov khoom yog qhov tseem ceeb, uas feem ntau yog raug cais los ntawm ISO, uas tseem cuam tshuam kev kis.
Cov Lus Qhia
Kauj ruam 1
Cov koob yees duab feem ntau siv tib lub shutter ceev ntsuas, uas tau hais tawm hauv feem ntawm ib feem thib ob: Cov no yog cov ntsuas ntawm 8000 (18000 vib nas this) txog 4 (4 vib nas this). Lub tshuab kaw nrawm nrawm nrawm yog qhov yuav tsum tau kom tsis txhob plooj tus ncej, vim tias yog tias koj tuav lub koob yees duab hauv koj txhais tes, lub siab tuaj yeem hloov mus ntawm qhov kev hloov me ntsis. Yog tias koj tua yam tsis muaj lub kos, nws yog qhov yuav tsum tau ua kom tau nrawm nrawm dua kom khiav ceev nrawm dua. Yog tias muaj ntau lub teeb pom kev, ces cov ISO yuav tsum yog qhov tsawg. Yog tias lub hnub muaj huab, ISO yuav tsum yog li ntawm 200-400.
Kauj ruam 2
Kev khiav qeeb tshaj plaws (1/8000) yog siv rau kev kawm mus rau lwm qhov. Tab sis kev tawm tswv yim (ISO) rau xws li kev tua yuav tsum yog qhov ntau.
Kauj ruam 3
Yog tias tsis muaj lub teeb me me, qhov ntsuas kaw tau nce. Kev khiav qeeb qeeb tshaj plaws yog tsim tau thaum tua thaum hmo ntuj yam tsis tau siv lub eeb. Lub teeb rhiab yuav tsum maximized zoo li, thiab lub aperture yuav tsum tau qhib.
