Digital Camera vs DSLR
Lo lus "photoography" yog los ntawm Greek lo lus phōs, uas txhais tau tias lub teeb, thiab gráphein, uas txhais tau tias sau ntawv. Hauv qhov kev nkag siab no, kev yees duab txhais tau tias sau lossis pleev xim nrog lub teeb. Cov koob yees duab yog cov cuab yeej peb siv los ua tiav cov duab no. Qhov siab tshaj plaws ntawm cov koob yees duab no yog cov koob yees duab digital thiab DSLR koob yees duab. Lub koob yees duab digital yog ib qho kev hloov pauv tseem ceeb tshaj plaws hauv kev tshawb fawb thiab thev naus laus zis tsis ntev los no. Kev siv cov koob yees duab digital yog qhov loj, thiab muaj cov koob yees duab digital hauv yuav luag txhua tus neeg hauv tsev neeg cov npe. Thaum siv ib yam dab tsi nws yog qhov zoo kom paub cov hauv paus hniav thiab keeb kwm ntawm nws. Cov koob yees duab digital thiab DSLR koob yees duab muaj lawv cov keeb kwm. Cov no yog qee cov cuab yeej thev naus laus zis tshaj plaws thiab cov cuab yeej ntse uas peb siv yuav luag txhua hnub rau peb txoj kev yooj yim. Muaj ntau pua lub koob yees duab manufacturers, thiab lawv cov technologies txawv ntawm ib leeg. Hauv tsab xov xwm no, peb yuav los sib tham thiab sib piv cov koob yees duab digital thiab DSLR lub koob yees duab yog dab tsi, lawv qhov zoo thiab qhov tsis zoo, kev siv yooj yim, cov cuab yeej siv nrog cov koob yees duab no, lawv qhov zoo sib xws thiab qhov sib txawv thaum kawg.
koob yees duab digital
Lub koob yees duab yog Ameslikas raws li cov yeeb yaj kiab ntawm cov khoom siv teeb pom kev zoo ua raws li txoj kev thaij duab. Tom qab ntawd raws li cov thev naus laus zis xws li cov khoom siv sib txuas (CCD) thiab cov khoom siv sib txuas hlau oxide semiconductor (CMOS) tau tsim lub sensor tom qab dhau los ua txheej txheej ntawm lub teeb hluav taws xob hluav taws xob. Cov Cheebtsam no tau muab tso rau hauv ib qho zoo meej ob qhov sib txawv kom ua rau lub ntsej muag ntawm lub sensor. Lub teeb los ntawm lub lens ua rau cov duab ntawm qhov chaw ntawm lub sensor; lub focusing mechanism ntawm lub lens ces tsom qee qhov chaw lossis tag nrho cov duab nyob ntawm qhov chaw. Lub aperture ntawm lub koob yees duab ces qhib kom cia ib tug yav tas los txhais npaum li cas ntawm lub teeb nkag mus rau lub koob yees duab. Qhov no yog ua los ntawm kev tswj tus nqi aperture thiab shutter ceev ntawm lub koob yees duab. Tom qab ntawd qhov teeb meem teeb meem ntawm lub sensor hloov mus rau hauv cov qauv me me, uas tsuas yog muaj cov lej thiab xoom. Qhov no tau txais kev cawmdim nyob rau hauv lub cim xeeb ntawm lub koob yees duab tej zaum compressed los yog tej zaum uncompressed. Qee cov duab compressed yog JPEG, TIFF, thiab GIF. Ib qho piv txwv ntawm cov duab uas tsis muaj duab yog RAW. Feem ntau ntawm cov koob yees duab digital tuaj yeem kaw cov yeeb yaj kiab. Cov yeeb yaj kiab no tau txais kev cawmdim hauv cov lus tsa suab JPEG lossis AVI. Feem ntau ntawm cov koob yees duab digital muaj cov chaw xws li nws pib ua kom pom tseeb, nrhiav pom lub ntsej muag, xaiv qhov xwm txheej tsis siv neeg, tsis siv neeg dawb tshuav nyiaj li cas thiab nrhiav pom luag nyav.
DSLR koob yees duab
DSLR sawv cev rau lo lus digital tib lub lens reflex. Cov koob yees duab DSLR yog hom koob yees duab digital siab heev. Nws siv lub lens cais thiab lub cev ob qho tib si uas kim tshaj li ib txwm taw tes thiab tua cov koob yees duab digital. Cov lo ntsiab muag no yog qhov zoo; kuj, muaj lub lens loj heev qhib dua li lub koob yees duab ib txwm, yog li ntawd, lub sharpness ntawm cov duab yog ho siab. Cov lo ntsiab muag thiab lub koob yees duab lub cev muaj cov ntawv qhia tag nrho thiab tsis siv neeg tswj cov duab xws li cov nyiaj dawb mus rau cov ntsiab lus tsom.
Dab tsi yog qhov txawv ntawm Cov Koob Yees Duab Digital thiab DSLR Lub Koob Yees Duab?
DSLR koob yees duab yog qhov tseem ceeb tshaj ntawm cov koob yees duab digital. Cov koob yees duab digital yog ib qho ntawm cov khoom siv, uas muaj peev xwm nthuav tawm thiab khaws cov duab thiab cov yeeb yaj kiab, tab sis cov koob yees duab DSLR tau tsim tshwj xeeb rau kev yees duab. Tab sis feem ntau ntawm cov koob yees duab DSLR kuj muaj qhov chaw kaw video.
