Yuav Ua Li Cas Xaiv Lub Koob Yees Duab Los Ntawm Ntau Hom Lub Koob Yees Duab - Lub Tswv Yim Xaiv Lub Koob Yees Duab
Lub koob yees duab yog ib qho cuab yeej siv los ntes cov duab rau hauv daim ntawv, uas tuaj yeem nkag mus tau tom qab. Muaj ntau hom koob yees duab. Lub koob yees duab compact, compact digital koob yees duab, Ib lub lens reflex lossis SLR koob yees duab, thiab Digital tib lub lens reflex lossis DSLR koob yees duab yog hom ntau tshaj. Kuj tseem muaj hom tsis tshua nyiam xws li twin lens reflex (TLR). Hom nrov tshaj plaws ntawm cov kws tshaj lij thiab cov kws yees duab nyiam yog SLR. Txij li thaum nws xa cov duab zoo kawg nkaus, kev ntseeg siab, kev tswj hwm kev txhaj tshuaj, thiab cov khoom txhawb nqa, SLR lub koob yees duab tau coj mus txog yuav luag 100% ntawm cov kws yees duab. Muaj ob hom SLR koob yees duab, ib qho yog tus qauv thaum ntxov, uas siv 35mm zaj duab xis, thiab lwm yam siv lub sensor digital. Cov koob yees duab SLR yog kim dua li cov koob yees duab SLR. Tab sis lawv muaj txiaj ntsig zoo vim tias koj tuaj yeem pom cov duab ua ntej nws ua tiav thiab tsis muaj nqi rau zaj duab xis. Muaj ob peb lwm qhov zoo ntawm DSLR koob yees duab ib yam nkaus. Koj tsis tas yuav nqa cov yeeb yaj kiab loj loj. Txhua qhov yuam kev hauv kev txhaj tshuaj tuaj yeem kho tau yooj yim los ntawm kev txhaj tshuaj ntxiv. Kev kho siv computer software yog yooj yim heev. Cov duab zoo yog ntau dua, thiab qhov loj dua tuaj yeem tau txais. Lub koob yees duab DSLR muaj ntau qhov tseeb thiab yooj yim txoj kev, xws li autofocus. Yog li ntawd, yuav luag xoom lub koob yees duab zaj duab xis yog tsim tawm tam sim no, thiab kev lag luam yog tag nrho los ntawm cov koob yees duab digital. Lub ntsiab tseem ceeb ntawm tsab xov xwm no yog coj tus neeg siv xaiv lub koob yees duab DSLR zoo. Thawj qhov uas tus neeg siv yuav tsum nrhiav yog lub npe nrov npe. Nikon, Canon, Sony, Olympus, Pentax, Fujifilm, Vivitar, Panasonic thiab Kodak yog qee lub npe nrov. Tus neeg siv yuav tsum tau saib qhov zoo, mega pixel tus nqi, lub lens khoom, hom sensor, FPS tus nqi, Duab stabilization thiab ntau yam ntxiv thaum yuav lub koob yees duab.
Kev daws teeb meem ntawm lub koob yees duab yog dab tsi?
Kev daws teeb meem ntawm lub koob yees duab yog ib qho ntawm cov ntsiab lus tseeb uas tus neeg siv yuav tsum tau saib thaum yuav lub koob yees duab. Qhov no tseem hu ua tus nqi megapixel. Ib pixel yog ib qho kev yees duab rhiab heev. Lub sensor ntawm lub koob yees duab muaj ntau lab ntawm cov sensors ua hauv arrays. Tus nqi megapixel ntawm lub koob yees duab muab cov naj npawb ntawm cov ntsiab lus sensor, hauv lab, hauv lub koob yees duab. Piv txwv li, 12.1MP lub koob yees duab muaj 12.1 lab pixels ua rau hauv lub sensor. Lub siab daws teeb meem sensor txhais tau tias cov duab zoo. Cov koob yees duab digital compact thiab qib nkag DSLR koob yees duab muaj megapixel qhov tseem ceeb xws li 7 MP txog 16 MP. Cov koob yees duab tshaj lij yuav muaj kev daws teeb meem txog 28 lossis 30 megapixels. Lwm qhov tseem ceeb tshaj plaws ntawm cov neeg siv khoom tsis nco yog qhov ntsuas qhov loj me.
cheeb tsam ntawm lub sensor tsuas yog qhov tseem ceeb raws li qhov kev daws teeb meem ntawm lub sensor. Lub sensor nrog thaj tsam loj tuaj yeem tsim cov duab ntse heev uas yuav zoo li xav tsis thoob hauv qhov loj. Tib megapixel tus nqi compacted rau ib cheeb tsam me me sensor yuav muab cov duab tsis zoo tshaj qhov chaw siab. Ob tus nqi megapixel thiab qhov sensor loj yuav tsum tau txiav txim siab thaum yuav lub koob yees duab.
Y Yuav ua li cas ISO yog dab tsi?
ISO tus nqi ntau kuj yog qhov tseem ceeb. ISO tus nqi ntawm lub sensor txhais tau tias ntau npaum li cas rhiab heev lub sensor yog rau ib tug muab quantum ntawm lub teeb. Cov yeeb yam no tseem ceeb heev hauv kev txhaj tshuaj hmo ntuj thiab kev ua kis las thiab kev thaij duab thaij duab. Tus kws yees duab kev ua kis las yuav tsum tau siv qhov ceev ceev ceev heev kom coj cov duab tseem ceeb ntawm kev txav ceev, yog li txo qhov teeb meem ntawm lub teeb ntawm lub sensor. Yog li ntawd, lub sensor yuav tsum tau khaws cia rau hauv tus nqi siab thiaj li yuav ntes tau qhov zoo ntawm qhov ci. Tab sis nce tus nqi ISO muaj qhov tsis zoo. Hauv cov sensors digital, tus nqi ISO tau nce ntxiv los ntawm kev nthuav qhia qhov teeb meem tshwm sim. Cov txheej txheem amplification no kuj ua rau lub suab nrov hauv lub teeb liab yuav tsum tau amplified. Lub suab nrov no ua rau muaj qhov tseem ceeb ntawm cov nplej hauv daim duab. Cov nplej no pom hauv cov duab ib txwm muaj thiab muaj txiaj ntsig zoo rau cov duab loj. Qhov no tuaj yeem txo qis siv computer software, tab sis nws ua rau poob ntawm sharpness. Qhov kev xaiv zoo tshaj plaws yog mus rau tus nqi qis tshaj ISO thaum thaij duab. Tab sis muaj tus nqi ISO siab yog ib txwm muaj txiaj ntsig.
Ncej ib tus nqi thib ob yog dab tsi?
Frames ib tus nqi thib ob, lossis feem ntau hu ua FPS tus nqi, kuj yog ib qho tseem ceeb thaum nws los txog rau kev ua si, tsiaj qus thiab kev yees duab. FPS tus nqi txhais tau hais tias tus naj npawb ntawm cov duab uas lub koob yees duab tuaj yeem tua ib ob ntawm ib qho chaw. Thaum nws los txog rau thaj chaw xws li kab tshoob, kev ua kis las, thiab tsiaj qus, kev ntes lub sijhawm yog qhov tseem ceeb heev. Yog tias lub sijhawm tsis raug ntes nws dhau lawm, thiab tej zaum yuav tsis tshwm sim dua. Yog li ntawd, nws yog ib qho tseem ceeb uas yuav tsum nias lub kaw lus tsis tu ncua, thiab tau txais cov duab ntau npaum li koj tuaj yeem ua lub sijhawm zoo, yog tias koj tsis yog lub sijhawm zoo tshaj plaws hauv kev yees duab. Nws kuj yuav tsum raug sau tseg tias cov duab daws teeb meem siab yuav siv sijhawm ntev dua los khaws cia, yog li, ua rau lub sijhawm ntawm ob qhov kev tua. Lub RAM ntawm lub koob yees duab kuj ua ib feem tseem ceeb hauv FPS tus nqi. Daim duab hom kuj tseem ceeb. Yog li qhov kev xaiv zoo tshaj plaws yog mus rau lub koob yees duab nrog lub thav duab zoo ib tus nqi thib ob.
Shutter lag thiab lub sijhawm rov qab yog dab tsi?
A DSLR yuav tsis thaij duab sai li sai tau thaum lub kaw lus raug nias. Hauv feem ntau ntawm cov xwm txheej, nws pib tsom thiab nws pib qhov ntsuas dawb yuav tshwm sim tom qab lub pob nyem. Yog li ntawd, muaj lub sijhawm sib txawv ntawm cov xovxwm thiab cov duab tiag tiag. Qhov no yog lub npe hu ua shutter lag ntawm lub koob yees duab. Yog tias muaj qhov kaw kaw siab, peb yuav tsis tuaj yeem ntes tau raws nraim qhov peb xav tau. Qhov no tsis yog qhov tseem ceeb heev hauv thaj chaw xws li toj roob hauv pes, portrait lossis macro photography, tab sis nws tseem ceeb heev hauv kev nqis tes ua, kev ua kis las, kab tshoob, thiab kev yees duab tsiaj qus. Lub sij hawm rov qab yog lub sij hawm coj mus tua ib daim duab thib ob tom qab thawj tus txhaj tshuaj. Qhov no tseem ceeb heev, yog tias koj tsis yog lub sijhawm zoo. Yog li qhov kev xaiv zoo tshaj plaws yog mus rau lub koob yees duab nrog lub kaw lus qis, thiab lub sijhawm rov qab zoo.
Tus naj npawb ntawm cov ntsiab lus autofocus yog dab tsi?
Autofocus cov ntsiab lus lossis AF cov ntsiab lus yog cov ntsiab lus, uas tau tsim rau hauv lub cim xeeb ntawm lub koob yees duab. Yog tias qhov tseem ceeb yog muab rau qhov AF point, lub koob yees duab yuav siv nws lub peev xwm autofocus los tsom lub lens rau cov khoom hauv qhov muab AF point. Feem ntau cov koob yees duab compact tsuas muaj 1 AF point ntawm qhov chaw. Tab sis cov koob yees duab DSLR muaj ntau cov ntsiab lus AF, txog li 45 lossis ntau dua. AF cov ntsiab lus tseem ceeb hauv kev txhaj tshuaj. Yog tias koj xav tau cov khoom, uas yog nyob rau hauv kev tsom mus rau sab ntawm daim duab, koj tuaj yeem siv qhov cuam tshuam AF taw tes kom tsom mus rau sab es tsis yog qhov chaw. Tab sis ntau ntau cov ntsiab lus AF kuj tseem yuav cuam tshuam cov zaub thiab ua rau nws nyuaj rau xaiv qhov yog. Qhov kev xaiv zoo tshaj plaws yog xaiv tus qauv nrog tus lej nruab nrab ntawm AF cov ntsiab lus.
High definition movie recording yog dab tsi?
Cov yeeb yaj kiab siab lossis HD yeeb yaj kiab sib haum rau cov yeeb yaj kiab uas muaj kev daws teeb meem siab dua li cov qauv txhais cov yeeb yaj kiab. HD movie hom yog 720p thiab 1080p. 720p muaj qhov ntev ntawm 1280 × 720 pixels, thaum lub 1080p muaj qhov ntev ntawm 1920 × 1080 pixels. 1080p video yog qhov ntse thiab meej dua li 720p video. Tab sis nws yuav siv sij hawm ntau lub zog los tsim 1080p video dua li 720p video. Qee lub koob yees duab DSLR muaj 720p video; qee qhov muaj 1080p video, thiab qee qhov tsuas muaj suab jpeg, uas tsis yog HD video hom. Yog tias koj yog tus kws yees duab tshaj lij, koj yuav tsis xav tau kaw video txhua. Yog tias koj yog ib tus neeg siv tsis tu ncua, koj yuav xav xyuas seb cov yeeb yaj kiab HD puas muaj nyob hauv lub koob yees duab. Txawm tias tsev neeg cov yeeb yaj kiab 720p yuav saib zoo heev.
Dab tsi yog Live saib thiab Flexibility ntawm cov zaub? Feem ntau ntawm cov koob yees duab DSLR niaj hnub tuaj nrog saib nyob. Nyob saib yog lub peev xwm los siv lub LCD raws li ib tug viewfinder. Qhov no tuaj yeem yooj yim vim tias LCD muab qhov pom tseeb ntawm daim duab hauv cov xim zoo. Yog li nws yog qhov zoo mus rau lub koob yees duab nrog saib nyob, yog tias tsis yog lub viewfinder yuav tsum tau siv txhua lub sijhawm txhawm rau txhawm rau sau cov duab. Feem ntau ntawm cov koob yees duab DSLR niaj hnub no muaj lub kaum ntse ntse LCD, uas tuaj yeem ua tau zoo heev thaum thaij duab lub kaum ntse ntse. Lub rotatable zaub tuaj yeem pab tau zoo hauv kev sau cov xov xwm nyuaj thiab kev txhaj tshuaj zoo nkauj.
Nyhav thiab Dimensions
Ib yam khoom hnyav dhau yuav txhais tau tias lub nra hnyav. Nov yog ib yam uas peb sim tshem tawm hauv peb qhov kev mus ncig tsis tu ncua. Tab sis feem ntau ntawm cov koob yees duab kev ua tau zoo hnyav dua li qhov peb xav tau. Yog li qhov kev xaiv zoo tshaj plaws yuav yog mus rau lub koob yees duab uas muaj qhov koj xav tau, thiab qhov hnyav tuaj yeem zam tau. Thaum nws los txog rau qhov ntev ntawm lub koob yees duab, ob qho tib si me thiab loj dhau yog qhov phem. Lub koob yees duab lub cev me dhau txhais tau hais tias cov nyees khawm yog tag nrho cov cluttered, thiab lub koob yees duab yog ib qho nyuaj rau tuav. Lub koob yees duab loj dhau lawm yuav ua rau muaj teeb meem ntau dua nrog qhov chaw muaj tsawg, thaum mus ncig hauv tsev neeg. Tej zaum nws yuav zoo rau xaiv lub koob yees duab uas muaj lub cev nruab nrab.
Cia nruab nrab thiab muaj peev xwm
Nyob hauv DSLR koob yees duab, lub cim xeeb inbuilt yuav luag negligible. Yuav tsum muaj cov cuab yeej cia sab nraud los tuav cov duab. Qee lub koob yees duab txhawb nqa tsuas yog cov npe tshwj xeeb thiab cov qauv ntawm daim npav nco. Tab sis feem ntau ntawm cov koob yees duab yog tsim rau universal SD, SDHC thiab SDXC phaib. Nws yog ib txwm zoo mus rau SDHC lossis SDXC daim npav vim lawv tuaj yeem muaj peev xwm nco tau thiab nyeem / sau nrawm dua. Qhov siab tshaj plaws cia lub koob yees duab tuaj yeem ua tau kuj tseem ceeb, vim nws txiav txim siab seb cov duab ntau npaum li cas koj tuaj yeem khaws cia hauv ib daim npav. Kev xyaum thaij duab zoo yog mus nrog ib daim npav dawb ntawm kev tua tshiab. Thiab nws yog qhov tshwm sim ntau dua tias koj yuav khiav tawm ntawm lub zog ua ntej khaws cia. Yog tias qhov khaws cia ntawm ib daim npav tsis txaus, nws raug nquahu kom muaj daim npav khaws cia. Daim npav muaj peev xwm loj heev kuj tseem yuav ua rau lub sijhawm rov qab poob, thiab yuav ua rau lub koob yees duab qeeb qeeb.
roj teeb lub neej thiab nyem
Lub roj teeb lub neej ntawm lub koob yees duab tseem ceeb heev. Nws qhia peb txog kwv yees tus naj npawb ntawm cov duab uas tuaj yeem coj mus rau hauv ib qho nqi. Qhov no yog qhov tseem ceeb heev hauv kev yees duab sab nraum zoov qhov twg lub hwj chim tsis yooj yim. Yog tias lub koob yees duab tuaj yeem siv dhau lub txee roj teeb xws li AA roj teeb, nws yuav yooj yim kom muaj cov roj teeb ntxiv. Lub roj teeb spare rau txhua lub koob yees duab kuj tuaj yeem yuav tab sis nws kim dua li AA roj teeb. Nws kuj yog qhov zoo los xyuas seb puas muaj lub flash pop up sab hauv thiab khau rau lub adapter rau sab nraud flash.
Kev xaiv lub koob yees duab zoo tshaj
Nws tag nrho yog nyob ntawm seb koj xav tau dab tsi los ntawm koj lub koob yees duab. Ib tug amateur yuav zoo nrog lub koob yees duab uas yog tus nqi nruab nrab tab sis cov yam ntxwv tseem ceeb xws li kev daws teeb meem, ISO, FPS, shutter lag muaj qhov zoo. Tab sis qhov no yuav txhais tau tias txiav rov qab rau qhov hnyav thiab zoo li. Tus kws tshaj lij yuav zoo nrog lub koob yees duab uas muaj tag nrho cov yam ntxwv tseem ceeb ua ke nrog lub cev nruab nrab thiab lub roj teeb zoo. Ib qho tseem ceeb uas koj yuav tsum tau kuaj xyuas yog, seb puas muaj qhov zoo tom qab kev pab cuam thiab dab tsi yog cov khoom muaj rau cov qauv ntawd. Feem ntau ntawm cov lo ntsiab muag nyob rau hauv ib lub hom yog interchangeable thiab siv tau nrog txhua tus qauv. Tab sis qee qhov lo ntsiab muag tau tsim rau lub koob yees duab tshwj xeeb thiab tsis tuaj yeem siv nrog lwm tus. Lwm qhov tseem ceeb uas yuav tsum tau kuaj xyuas yog seb lub cev puas muaj lub tshuab ntxhua khaub ncaws; txwv tsis pub, cov hmoov av yuav nyob ntawm lub sensor thiab cov duab yuav tsis muaj txiaj ntsig.
