Thaum koj nias lub khawm kaw thiab thaij duab, daim duab tsis yog qhov kawg ntawm daim npav nco xwb. Txawm hais tias nws yog lub lens ruaj khov, lub iav tsis muaj ILC, lossis DSLR, lub koob yees duab digital yuav tsum mus dhau ntawm cov kauj ruam ua ntej cov duab khaws cia rau hauv daim npav nco. Ib qho tseem ceeb ntawm kev khaws cov duab ntawm lub koob yees duab digital yog cov duab tsis zoo.
Lub koob yees duab cov duab tsis cia chaw yog qhov tseem ceeb rau kev txiav txim siab ua haujlwm ntawm ib lub koob yees duab, tshwj xeeb tshaj yog thaum koj siv hom kev txhaj tshuaj tas li.
Capturing Photo Data
Thaum koj kaw daim duab nrog lub koob yees duab digital, cov duab sensor raug pom lub teeb, thiab lub sensor ntsuas lub teeb uas tawm tsam txhua pixel ntawm lub sensor. Cov duab sensor muaj ntau lab pixels (photoreceptor thaj chaw)-lub koob yees duab 20-megapixel muaj 20 lab photoreceptors ntawm daim duab sensor.
Cov duab sensor txiav txim siab xim thiab siv lub teeb uas tawm tsam txhua pixel. Cov duab processor hauv lub koob yees duab hloov lub teeb rau hauv cov ntaub ntawv digital, uas yog cov lej uas lub khoos phis tawj siv tau los tsim cov duab ntawm lub vijtsam zaub.
Cov ntaub ntawv no tau ua tiav hauv lub koob yees duab thiab sau rau hauv daim npav cia. Cov ntaub ntawv hauv daim duab yog ib yam li lwm cov ntaub ntawv hauv computer uas koj xav pom, xws li cov ntaub ntawv ua cov lus lossis daim ntawv nthuav qhia.
Txhawm cov ntaub ntawv nrawm
txhawm rau pab ua kom cov txheej txheem no nrawm dua, DSLRs thiab lwm lub koob yees duab digital muaj lub koob yees duab tsis zoo (muaj lub cim xeeb nkag mus tsis tau, lossis RAM), uas tuav cov ntaub ntawv ib ntus ua ntej lub koob yees duab kho vajtse sau rau hauv daim npav nco. Lub koob yees duab loj duab tsis tso cai rau ntau cov duab khaws cia hauv thaj chaw ib ntus no thaum tos kom sau rau hauv daim npav nco.
Cov koob yees duab sib txawv thiab daim npav cim xeeb sib txawv muaj qhov sib txawv ntawm kev sau nrawm, uas txhais tau tias lawv tuaj yeem tshem lub koob yees duab tsis nyob ntawm qhov sib txawv. Yog li, muaj qhov chaw cia loj dua hauv lub koob yees duab tsis pub tso cai rau khaws cov duab ntau dua hauv thaj chaw ib ntus no, uas ua rau muaj kev ua tau zoo dua thaum siv hom kev txhaj tshuaj tas mus li (tseem hu ua burst mode).
hom no yog hais txog lub koob yees duab lub peev xwm los txhaj ob peb zaug tam sim tom qab ib leeg. Tus naj npawb ntawm kev txhaj tshuaj uas tuaj yeem noj ib txhij yog nyob ntawm qhov loj ntawm lub koob yees duab tsis muaj.
Thaum lub koob yees duab pheej yig muaj thaj chaw me me, DSLRs niaj hnub no feem ntau muaj cov buffers loj uas tso cai rau koj khaws cia thaum cov ntaub ntawv ua tiav hauv keeb kwm yav dhau. Thawj DSLRs tsis muaj buffers txhua, thiab koj yuav tsum tau tos txhua qhov kev txhaj tshuaj kom tiav ua ntej koj tuaj yeem tua dua!
Qhov chaw ntawm daim duab tsis muaj
Lub koob yees duab tsis tuaj yeem nyob ua ntej lossis tom qab ua tiav cov duab.
- Ua ntej duab ua tsis tau. Cov ntaub ntawv RAW los ntawm lub sensor muab tso ncaj qha rau hauv qhov tsis. Cov ntaub ntawv yog tom qab ntawd ua tiav thiab sau rau hauv daim npav cia hauv lub thawv ntim xws li NEF, CR2, lossis ARW ua ke nrog lwm yam haujlwm. Hauv cov koob yees duab nrog qhov tsis zoo no, kev tua tsis tu ncua tsis tuaj yeem nce los ntawm kev txo cov ntaub ntawv loj.
- After Image Processing Buffer. Cov duab tau ua tiav thiab hloov mus rau hauv lawv cov hom ntawv kawg ua ntej muab tso rau hauv qhov tsis. Vim li no, tus naj npawb ntawm kev txhaj tshuaj nyob rau hauv kev txhaj tshuaj tas li tuaj yeem nce los ntawm kev txo cov duab cov ntaub ntawv loj.
Qee DSLRs siv "Smart" buffering. Txoj kev no muab cov ntsiab lus ntawm ob qho tib si ua ntej thiab tom qab buffers. Cov ntaub ntawv tsis tau ua tiav tau muab khaws cia rau hauv lub koob yees duab tsis pub tso cai rau ntau dua "thav duab ib ob" (fps) tus nqi. Tom qab ntawd lawv tau ua tiav rau hauv lawv cov ntawv kawg thiab xa rov qab mus rau qhov tsis muaj. Cov ntaub ntawv tom qab tuaj yeem sau rau hauv daim npav khaws cia tib lub sijhawm thaum cov duab tau ua tiav, yog li tiv thaiv lub raj mis.
