Nyob hauv ntiaj teb kev yees duab muaj ntau yam nthuav thiab tsis nkag siab rau cov neeg siv nruab nrab. Txawm li cas los xij, cov kws yees duab kws tshaj lij uas tau kawm tshwj xeeb hauv cov khoom siv tes ua no tuaj yeem nkag siab txhua yam no thiab tsim cov duab zoo nkauj zoo nkauj. Ib tug xws li feature yog lub dynamic ntau ntawm cov koob yees duab. Rau cov neeg siv nruab nrab, kab lus no tsis txhais tau dab tsi. Tus kws yees duab tshaj lij ntawm qhov ntsuas no tuaj yeem xaiv lub koob yees duab zoo. Thiab tam sim no peb yuav txheeb xyuas qhov kev txhais ntawm lub tswv yim no thiab dab tsi qhov dynamic ntau cuam tshuam. Ua ntej qee cov ntaub ntawv dav dav.
Dynamic range yog dab tsi?
Raws li cov ntsiab lus yooj yim, qhov sib txawv ntawm lub koob yees duab yog qhov nthuav dav uas lub cuab yeej tuaj yeem "rub tawm" los ntawm lub teeb thiab tsaus yam tsis muajillumination los yog tsaus ntuj. Qhov tseeb yog tias cov koob yees duab niaj hnub no yeej muaj qhov sib txawv me me heev. Thiab yog hais tias daim duab muaj ib tug ntse hloov ntawm lub teeb mus rau duab ntxoov ntxoo, ces nrog ib tug 100% lav ib yam dab tsi yuav highlighted los yog darkened. Nws tsis muaj teeb meem yog tias qhov tshwm sim yog qhov tseeb lossis tsis yog. Cov koob yees duab kev tshaj lij niaj hnub no muaj qhov sib txawv ntawm 8-10 nres (kev ntsuas tshwj xeeb rau DD). Thaum tib neeg lub qhov muag pom tau yooj yim 12-15 nres. Thiab zoo tib yam cov xab npum ntxuav tais diav NW nyuam qhuav ncav 6 nres. Lawm, nyob rau hauv cov xwm txheej zoo li no, tsis tuaj yeem hais lus ntawm ib qho dynamic ntau yam. Tias yog vim li cas nws thiaj li tsim nyog yuav DSLR (tsawg kawg yog qhov nkag-theem ib). Lawv muaj qhov dav tshaj plaws nyob rau lub sijhawm tam sim no.
Kuv yuav ua li cas thiaj paub tias lub cuab yeej muaj li cas?
Yuav ua li cas thiaj paub qhov dynamic ntau ntawm lub koob yees duab? Feem ntau, manufacturers sau cov ntaub ntawv no nyob rau hauv cov yam ntxwv ntawm lub cuab yeej. Tab sis qee tus tsis quav ntsej cov duab no. Txawm hais tias nws nyob ntawd, koj yuav tsum tsis txhob cia siab rau cov lej no. Puas muaj tej yam uas yuav sau tau? Zoo dua mus xyuas nws. Koj yuav tsum nrhiav thaj chaw nrog qhov sib txawv ntawm qhov sib txawv ntawm lub teeb mus rau duab ntxoov ntxoo thiab sim thaij duab nws ntawm qhov sib txawv ntawm qhov sib txawv. Yog hais tias lub cuab yeej tswj kom "rub" cov ntsiab lus tawm ntawm qhov ntxoov ntxoo, ces txhua yam nyob rau hauv kev txiav txim nrog lub dynamic ntau yam. Los ntawm txoj kev, ntau DSLRs muaj peev xwm ntawm qhov no. Thiab ntawm no yog cov npe ntawm cov koob yees duab nrog qhov zoo tshaj plaws dynamic ntau yam.
Canon EOS 1D X Mark II
Lub koob yees duab txias rau cov kws tshaj lij. Siv rau cov koob yees duab nrog lojdynamic ntau yam. Tus txiv neej zoo nraug no muaj peev xwm "rub tawm" yuav luag txhua tus ncej. Tus so ntawm cov yam ntxwv technical kuj zoo heev. "Mark 2" muaj tag nrho-loj DSLR matrix nrog kev daws teeb meem ntawm 21.5 megapixels. Cov txiaj ntsig zoo heev. Tsis tas li ntawd, lub koob yees duab no belongs rau qeb ntawm cov koob yees duab dav. Yog vim li cas cov kws tshaj lij nyiam siv nws ntau heev. Cov cuab yeej no muaj peev xwm tua cov yees duab hauv 4K daws teeb meem ntawm 60 ntas ib ob. Qhov ISO ntau yog los ntawm 100 txog 51200. Lub koob yees duab no muab cov duab zoo nkauj ua tsaug rau nws cov sensor siab heev thiab ntau yam tsis txaus ntseeg. Tib lub sijhawm, lub koob yees duab no kim dhau rau cov neeg siv nruab nrab. Nws tus nqi ntau tshaj 400 txhiab rubles. Nws tsis tsim nyog rau ntau tus. Txawm li cas los xij, muaj lwm cov qauv nrog ntau lub koob yees duab dynamic.
Nikon D750 NWS
"SLR" los ntawm Nikon yog ib qho zoo tshaj plaws hauv nws chav kawm. Tshwj xeeb, cov qauv no muaj qhov dav dynamic ntau yam. Tab sis qhov no tsis yog lub ntsiab lus ntawm no. Thiab qhov tseem ceeb tshaj plaws yog tias lub koob yees duab muaj lub matrix puv loj. Nrog txhua qhov tshwm sim tom qab. Qhov no txhais tau hais tias cov cuab yeej yuav tuaj yeem tsim cov duab zoo nkauj thiab zoo nkauj hauv yuav luag txhua yam kev tua. Lub dynamic ntau yam ntawm Nikon d750 lub koob yees duab matrix tso cai rau koj mus "rub tawm" txawm tias qhov kev cia siab tshaj plaws txhaj tshuaj. Muaj ntau tus kws tshaj lij "DSLRs" nyob deb ntawm "Nikons" hauv qhov no. Lub koob yees duab muaj ib tug matrix24.9 megapixels ua. Cov cuab yeej tuaj yeem tua cov yees duab hauv 4K ntawm qhov ceev ntawm 60 ntas ib ob thiab muaj qhov ceev ceev autofocus. Nws ua rau nws yooj yim mus tua txawm tias cov khoom txav ceev. Lwm qhov zoo ntawm lub koob yees duab no yog tus nqi. Nws yog pheej yig dua li daim ntawv theej dhau los. Thiab qhov txawv yog qhov tseem ceeb heev. Lub koob yees duab no twb muaj rau ntau. Tias yog vim li cas nws yog nyob rau hauv heev ruaj khov thov. Txawm li cas los xij, cia peb mus rau lwm qhov piv txwv.
YCanon EOS 5D Mark IV
Qhov ntau yam ntawm lub koob yees duab Canon yog nws qhov txiaj ntsig tsis tuaj yeem tshaj cov qauv los ntawm lwm cov tuam ntxhab. Thiab "Mark 4" kuj muaj cov yam ntxwv zoo heev rau lub koob yees duab ntawm chav kawm no. Lub DSLR-hom matrix nrog kev daws teeb meem ntawm 31.7 megapixels tau teeb tsa ntawm no. Muaj ceev autofocus, lub lens kho qhov muag, thiab qhov zoo ISO ntau yam. Thiab ntawm chav kawm, muaj optical duab stabilization. Yog tsis muaj nws, lub koob yees duab ntawm qib no tsuas yog ua tsis tau. Lub koob yees duab no tuaj yeem tua yees duab hauv 4K ntawm 30 ntas ib ob. Txawm li cas los xij, video zoo tawm ntau yam xav tau. Nws yog to taub. Lub koob yees duab no yog tsim los rau kev yees duab, tsis yog yees duab. Tab sis cov duab zoo nkauj heev thiab zoo heev. Thiab nws tsuas yog cuam tshuam rau qhov dynamic ntau ntawm lub koob yees duab. Tus nqi ntawm cov qauv no yog 230 txhiab rubles. Qhov no yog tus nqi nruab nrab. Ntau tus qauv ntawm cov chav kawm no tseem kim dua. Tab sis qhov no yog tsom rau amateurs thiab enthusiasts. Yog vim li cas tus nqi zoo li ntawd. Tam sim no cia peb mus rau tus qauv tom ntej.
Nikon D500 NWS
Lub koob yees duab no yog qhov zoo tshaj plaws rau kev ua kis las thiab cov kws yees duab tsiaj qus. Vim li cas? Vim tias nws muaj xob laim-ceev thiab yuav luag txhua zaus yog autofocus. Lub kaw lus autofocus tsiv ntawm no los ntawm cov qauv tsim (thiab kim heev) los ntawm Nikon. Cov qauv no tau tso tawm rov qab rau xyoo 2016, tab sis tseem tsis tau poob nws qhov tseeb. Lub koob yees duab muaj tag nrho-fledged DSLR-hom matrix nrog ib tug daws teeb meem ntawm 21.5 megapixels. Nws muaj qhov zoo ISO ntau yam thiab qhov muaj txiaj ntsig zoo heev (uas yog qhov tseem ceeb tshaj). Tsis tas li ntawd, lub koob yees duab boasts lub xub ntiag ntawm optical stabilization thiab lub peev xwm los kaw cov yees duab hauv 4K ntawm 30 ntas ib ob. Lub koob yees duab kuj muaj qhov pom qhov muag pom. Lub koob yees duab no zoo meej rau cov neeg pib tshiab, vim nws muaj qhov siab heev (thiab zoo-tuned) tsis siv neeg tua hom. Thiab cov neeg siv yuav txaus siab rau tus nqi. Nws yog ntau npaum li cas tsawg dua 200 txhiab rubles, uas tau nug rau cov qauv yav dhau los. Cia peb mus rau qhov piv txwv tom ntej.
Nikon D7200
Thiab Nikon dua. Lub sijhawm no nws yog 2015 qauv. Nws muaj ntau yam dynamic ntau rau cov koob yees duab ntawm chav kawm no. Nws boasts lwm yam kev yam ntxwv. Piv txwv li, lub cuab yeej muaj tag nrho cov duab DSLR-matrix nrog kev daws teeb meem ntawm 24.5 megapixels. Qhov no txhais tau hais tias lub koob yees duab muaj peev xwm tsim tau cov duab zoo nyob rau hauv txhua qhov teeb pom kev zoo. Nyob rau tib lub sijhawm, hauvTus neeg siv muaj lub siab heev autofocus thiab ib qho optical viewfinder. Lwm qhov tseem ceeb ntawm lub koob yees duab no yog lub peev xwm tua yees duab hauv 4K daws teeb meem ntawm 30 ntas ib ob. Tab sis qhov tseem ceeb tshaj plaws yog qhov dynamic ntau ntawm lub koob yees duab. Kev sib piv nrog lwm tus qauv (txawm tias los ntawm tib lub chaw tsim khoom) pom tias lub koob yees duab no muaj ntau yam zoo dua li lwm tus. Thiab qhov no yuav tsum yog qhov kev txhawb siab tseem ceeb rau kev nrhiav tau ntawm Nikon tshwj xeeb. Yog tias tseem muaj kev tsis ntseeg, ntawm no yog qhov kawg chord: tus nqi ntawm cov cuab yeej tsis tshaj 70 txhiab rubles. Qhov no yuav luag tsis muaj dab tsi, xav txog chav kawm ntawm lub koob yees duab.
Nikon D3300
Ultra-budget qauv los ntawm "Nikon". Zoo heev rau beginners. Tab sis cov kws tshaj lij yuav tsis txaus siab. Qhov tseeb yog hais tias cov yam ntxwv ntawm lub koob yees duab yog heev me ntsis. Txawm nrog ib tug dav dynamic ntau yam. Lub koob yees duab no muaj APS-C hom sensor nrog kev daws teeb meem ntawm 24.7 megapixels. Nws muaj ib tug dlej theem ntawm autofocus thiab ib tug optical viewfinder. Cov cuab yeej yees duab tua tsuas yog hauv Full HD daws teeb meem ntawm 30 ntas ib ob. Hmoov tsis zoo, nws ua tsis tau ntau ntxiv. Tab sis lub koob yees duab no khav theeb tus nqi pheej yig heev. Nws raug nqi tsuas yog 25 txhiab rubles. Qhov no yog qhov pheej yig tshaj plaws dynamic range DSLR hauv peb qhov kev tshuaj xyuas. Yog li ntawd, ntau tus neeg tuaj yeem them taus. Txawm li cas los xij, cov cuab yeej no yuav muab cov duab zoo dua li lub thawv tshuaj ntxuav tes digital. Thiab nwszoo meej rau cov uas nyuam qhuav pib ua tus kws yees duab.
Kev txiav txim
Yog li, peb tau kawm txog qhov muaj zog npaum li cas hauv cov koob yees duab digital. Qhov no yog dab tsi cuam tshuam qhov zoo ntawm cov zaub ntawm cov ntsiab lus hauv cov duab ntxoov ntxoo hauv daim duab. Nws yog ib nqi sau cia hais tias ntau manufacturers muab zoo heev koob yees duab nrog ib tug dav dynamic ntau yam. Tab sis qhov teeb meem yog tias tsuas yog SLR koob yees duab muaj nws. Thiab lawv yog cov kim kim tshaj li cov pa hluav taws xob cov tais diav. Tab sis nws yog kev cai los them rau qhov zoo. Yog tias koj xav tau cov duab zoo, koj yuav tsum tau splurge ntawm lub koob yees duab zoo thiab kawm ua haujlwm nrog nws. Nov yog axiom.
Zoo kawg
Tam sim no yam tsis zoo heev nrog ntau yam dynamic txawm nyob rau hauv cov koob yees duab saum toj kawg nkaus. Nws tsis tuaj yeem los ze rau qhov qhia tias tib neeg lub qhov muag tuaj yeem paub qhov txawv. Yog li ntawd, tsis muaj ib yam dab tsi uas ruam tshaj qhov sib piv cov dynamic ntau ntawm lub koob yees duab thiab tib neeg lub qhov muag. Nws tsuas yog ib qho kev tsis txaus ntseeg. Txawm li cas los xij, thaum thaij duab, qhov no yuav tsum raug coj mus rau hauv tus account txhawm rau xaiv qhov raug raug, muaj peev xwm "rub tawm" cov ntsiab lus ntawm qhov tsaus ntuj thiab tsis yog "teeb tsa" thaj chaw kaj. Tab sis qhov no yuav siv sij hawm xyaum. Thiab lub koob yees duab zoo. Yam tsawg kawg ib ntawm cov uas tau piav saum toj no. Tom qab ntawd txhua yam yuav ua tiav.
