Cov iav tsis muaj qhov ntsej muag tau txais cov koob meej. Lawv tso cai rau koj kom coj cov duab uas tsis yog qib qis hauv qhov zoo rau DSLR koob yees duab, tab sis lawv kuj muaj qee tus yam ntxwv zoo.
Qhov tseem ceeb, lub koob yees duab tsom iav tsis sib txawv ntawm DSLR nyob rau hauv uas nws lub cev tsis muaj lub iav, pentaprism, theem tsom sensors thiab, raws li txoj cai, lub tshuab kaw. Ua tsaug rau qhov no, lub koob yees duab lub cev tuaj yeem ua kom me me li sai tau. Nyob rau tib lub sijhawm, matrices hauv cov tsom iav uas tsis muaj lub koob yees duab feem ntau tau teeb tsa zoo ib yam li hauv SLR koob yees duab, thiab hauv qhov ntsuas no lawv yuav tsis txawv txhua yam.
Cov txheej txheem ntawm kev ua haujlwm ntawm lub koob yees duab tsom iav yog yooj yim rau qhov tsis muaj peev xwm: lub teeb flux dhau ntawm lub lens mus ncaj qha rau hauv matrix, los ntawm qhov uas nws kis mus rau processor rau kev ua. Thiab twb tau ua tiav hauv daim foos kws yees duab pom nws hauv LCD npo. Thaum tua nyob rau theem ntawm qib kev kawm, muaj ib qho kev tshwm sim thiab thaij kom tiav.
Lawm, DSLR lub koob yees duab muaj nws cov pluses thiab minuses txuam nrog cov yam ntxwv nta. Qhov zoo muaj xws li kev ua kom nruj, lub peev xwm hloov lo ntsiab muag, thiab cov duab zoo. Ib qho ntxiv, DSLRs yog pheej yig dua rau kev tsim khoom thiab ntau txhim khu kev qha vim qhov tsis muaj cov tshuab seem.
Qhov tsis zoo ntawm DSLRs suav nrog qhov tseeb tias lawv tsis tshua muaj qhov tsis tshua pom muaj qhov pom kev dhau cov duab LCD hauv cov huab cua thaum hnub ci, thaum muaj ntau lub ntsej muag, thiab tseem tsis haus cov roj teeb. Ib qho ntxiv, tam sim no, ob peb qhov kev sib hloov pauv tau tso tawm rau DSLRs, thiab lawv tus nqi tom ntau heev. Tsis tas li, nyob rau hauv lub tsom iav tsis zoo, cov qauv software ntawm kev sib piv rau kev siv tau, vim tsis muaj lub siab tshwj xeeb nyob rau hauv rooj plaub raug tsim los rau lub hom phiaj no.
