Tsis ntev tas los no, vim muaj kev txo nqi hauv cov nqi, DSLR lub koob yees duab tau dhau los ua neeg nyiam, uas tso cai rau koj coj cov duab zoo dua. Txawm li cas los xij, qhov teeb meem tsis yog txhua tus neeg tuaj yeem xaiv tus qauv tseeb thiab txhim khu kev qha los ntawm txhua hom. Los ntawm ua raws li cov lus qhia hauv qab no, koj tuaj yeem tsom mus rau qhov tseem ceeb twg, dua li cov kev lag luam gimmicks ntawm lub koob yees duab manufacturers.
Cov Lus Qhia
Kauj ruam 1
Thawj qhov uas yuav tsum tau them sai sai rau yog cov naj npawb ntawm megapixels. Qhov ntsuas no qhia tau hais tias qhov siab tshaj plaws ntawm cov duab daws teeb meem uas lub koob yees duab tuaj yeem nqa yam tsis muaj kev ploj. Yog tias koj yuav lub koob yees duab rau cov duab hauv koj lub tsev album, tom qab ntawd 2-3 megapixels yuav txaus rau koj. Rau kev pib xyaum ua yees duab, qauv nrog 3-5 megapixels yog qhov tsim nyog.
Kauj ruam 2
Qhov zoo ntawm cov duab yog cuam tshuam tsis tsuas yog megapixels, tab sis kuj los ntawm lub koob yees duab matrix. Cov cuab yeej no muaj lub luag haujlwm rau xim gamut, hloov mus rau cov ntsiab lus me me ntawm cov khoom, qhov tob ntawm daim teb, suab nrov. Nws raug nquahu kom xaiv lub koob yees duab nrog phau ntawv kev hloov kho ntawm tes, raws li cov khoom siv hluav taws xob tsis tuaj yeem teeb tsa qhov ntsuas no raug.
Kauj ruam 3
Tom qab ntawv koj yuav tsum kuaj lub Zoom ua haujlwm. Muaj ob hom kev ua kom loj dua: digital thiab kho qhov muag. Thawj zaug yog ntsia rau ntawm cov qauv pheej yig xwb. Cov duab thaij nrog digital zoom yog qhov tsis zoo vim tias cov duab tau loj dua tom qab koj yees duab. Lub hauv paus ntsiab lus ntawm optical zoom yog hloov lub focal ntev ntawm lub lens. Nws yog qhov zoo tshaj plaws siv thaum koj tsis tuaj yeem ze rau koj lub ncauj lus.
Kauj ruam 4
Feem ntau, cov neeg tsim khoom nyiam tshaj tawm cov ntaub ntawv nkaus xwb hauv cov duab yuav raug cawm dim. Tus qauv hom yog JPEG, nws noj ntau lub cim xeeb tsawg dua, tab sis tib lub sijhawm, cov duab zoo tsis txawv ntawm hom ntawv tshaj lij.
Kauj ruam 5
Feem ntau, DSLR koob yees duab muaj qhov cim xeeb me me. Yog li no, lub koob yees duab yuav tsum muaj peev xwm txuag tau ntaub ntawv rau daim npav nco.
Kauj Ruam 6
Tsis muaj ib qho xwm txheej twg xaiv lub koob yees duab ua haujlwm los ntawm AA roj teeb ntawm cov pa, lawv yuav ua ntev li 30 txhaj tshuaj. Tsis tas li, tsis txhob them nyiaj rau lithium roj teeb. Qhov kev xaiv tau ntau tshaj plaws yog kev siv roj teeb alkaline hlau hydride roj teeb.
