Nikon D7000 vs D90 Y
D7000 thiab D90 yog ob lub DSLR zoo los ntawm Nikon. Nikon yog lub tuam txhab tsim lub koob yees duab loj thiab nws txhua qhov kev tshaj tawm tshiab yeej tsim ripples hauv khw. Thaum nws nyuam qhuav pib nws lub DSLR tshiab hu ua D7000, ntau tus tau hais sai sai tias nws zoo li D90 uas twb muaj npe nrov. Qhov tseeb muaj ntau qhov sib xws hauv D90 thiab D7000 tab sis muaj ob peb qhov sib txawv uas tsab xov xwm no npaj siab los taw qhia.
D90 yog qhov zoo tshaj plaws DSLR, tab sis tib neeg tau ua siab ntev tos qhov kev ua kom tiav, thiab nrog kev tso tawm ntawm D7000, lawv tos dhau lawm. Nws tsuas yog ntuj uas D7000 khaws tag nrho cov yam ntxwv zoo ntawm D90 tab sis ntxiv qee qhov zoo siab tshiab uas ua rau txhua qhov sib txawv. Nov yog qhov sib piv ceev ntawm ob lub koob yees duab DSLR zoo.
Sensor
Qhov tseem ceeb tshaj plaws ntawm txhua lub koob yees duab yog nws lub sensor, thiab qhov no yog qhov D7000 cov qhab nia dhau D90. Raws li piv rau D90's 12.3 MP sensor, D7000 muaj kev daws teeb meem siab dua ntawm 16.2 MP. Qhov no yog ib qho kev txhim kho uas tshwj xeeb tshaj yog siv rau cov kws yees duab tshaj lij thaum lawv cropping dluab. Ntau mega pixels kuj txhais tau tias muaj peev xwm tsim cov ntawv loj dua.
ISO
Muaj qhov sib txawv zoo hauv ISO qhov chaw ntawm ob lub koob yees duab. Thaum D90 tso cai rau ISO ntau ntawm 200-3200, nws tau raug txhim kho rau 100-6400 hauv D7000. Txawm hais tias nyob rau hauv hom txuas ntxiv, D7000 muaj qhov chaw siab dua ntawm 25600 qhov D90 tuaj yeem nce mus rau ISO 6400 nkaus xwb. Kev teeb tsa ISO siab dua yog ib txwm tseem ceeb rau txhua qhov kev txhaj tshuaj tseem ceeb, tshwj xeeb tshaj yog nyob rau hauv cov teeb pom kev zoo, thiab thaum koj xav tau los txo cov suab nrov rau ib qho. yam tsawg kawg nkaus.
Txhawb nqa rau SDXC
SDXC yog cov cim cim xeeb yav tom ntej uas muaj peev xwm ntau dua thiab tso cai rau kev nyeem ntawv thiab sau nrawm dua. Lawv kuj pab kom hloov cov duab sai ntawm lub koob yees duab rau koj lub computer. Thaum D90 tsis paub SDXC, thiab tuaj yeem mus deb li SDHC nco phaib, D7000 tso cai rau tus neeg siv siv cov npav SDXC. Yog li thaum koj tham txog kev khaws cia, D7000 muaj kev nyab xeeb yav tom ntej.
Ob qhov rau daim npav nco
Qhov no yog lwm qhov sib txawv uas muaj qhov tseem ceeb rau cov neeg nyiam thiab cov kws tshaj lij. Thaum D7000 tso cai rau ob lub cim xeeb daim npav qhov, D90 tsuas muaj ib qhov. Qhov no tsis tsuas yog txhais tau tias ntau qhov chaw cia thiab thaub qab, nws kuj txhais tau tias koj tuaj yeem khaws cov ntaub ntawv RAW cais los ntawm JPEG cov ntaub ntawv. Qhov no yog qhov tseem ceeb heev yog tias koj tua cov yeeb yaj kiab HD vim nws txhais tau tias koj tuaj yeem muaj cov yeeb yaj kiab ntev dua yam tsis muaj kev cuam tshuam uas tus kws yees duab yuav ntsib thaum nws siv D90.
HD cov yeeb yaj kiab hauv 1080p
Thaum D90 tuaj yeem kaw cov yeeb yaj kiab HD nkaus xwb hauv 720p, D7000 tso cai rau cov kws yees duab ua yeeb yaj kiab 720p thiab 1080p HD. Yog tias koj tab tom tua cov yeeb yaj kiab, qhov no yuav muaj txiaj ntsig zoo rau koj thiab tsim nyog rau kev hloov kho los ntawm D90 rau D7000. Ntxiv dua thiab, thaum D90 tso cai rau 5 feeb ntawm kev tua cov yeeb yaj kiab HD, D7000 tso cai rau kev ntes video txog 20 feeb.
Higher burst rates
Qhov no yog qhov tshwj xeeb uas muaj qhov tseem ceeb rau cov kws yees duab ncaws pob. Thaum D90 muaj qhov tawg ntawm 4.5, D7000 tso cai rau qhov tawg ntawm 6fps. Qhov no txhais tau tias cov duab zoo dua ntawm cov khoom txav ceev.
Muaj qee qhov sib txawv tseem ceeb ntawm D90 thiab D7000 uas tau sau tseg hauv qab no.
• Thaum D90 tsuas muaj 11 lub ntsiab lus tseem ceeb, D7000 tso cai ntau txog 39 lub ntsiab lus tseem ceeb
• D7000, ntawm 1167ISO muab ntau lub suab nrov txo qis dua D90 ntawm 977 ISO
• Thaum D7000 muaj qhov sib txawv ntawm nws pib, D90 tsis muaj nws
• D7000 muab cov xim zoo dua ntawm 23.5bits piv rau 22.7 ntsis ntawm D90
• Hauv duab zoo, D7000 zoo dua D90
• As far as DR (dynamic range) is concerned, D7000 at 13.9EV is better than 12.5 EV of D90
• D7000 muaj lub mic sab nraud uas D90 tsis muaj
• D7000 muaj qhov pom kev zoo dua ntawm 100% piv rau 96% ntawm D90
• Roj teeb lub neej ntawm D7000 tso cai rau ib qho txhaj tshuaj 1050 piv rau 850 txhaj tshuaj nrog D90
• Thaum D7000 yog huab cua kaw, D90 tsis yog
• D7000 muaj qhov zoo tshaj plaws lub teeb rhiab heev ntawm 6400 ISO dua 3200 ISO ntawm D90
Txawm li cas los xij muaj qee qhov nta uas D90 cov qhab nia dhau D7000.
D90 muaj qhov pom qhov loj dua, lub kaw lus qis dua (208ms piv rau 238 ms ntawm D7000), muaj qhov pib qeeb qeeb ntawm 300 ms piv rau 400 ms ntawm D7000, thiab tseem sib dua ntawm 703 g (D7000 yog 780g).
Txawm hais tias yeej muaj qee qhov ntxiv hauv D7000, txawm tias yuav hloov kho lossis tsis hloov yog nyob ntawm koj qhov yuav tsum tau ua. Txawm li cas los xij, yog tias koj yog tus neeg yuav khoom tshiab, D7000 yuav tsum yog koj lub nrig xaiv.
