Qhov Tseem Ceeb Qhov txawv - Tag Nrho Cov Ncej vs APS-C
Lub sensor yog ib qho tseem ceeb ntawm lub koob yees duab uas ntes lub teeb uas nkag los ntawm lub koob yees duab lens. Lub teeb no ces hloov mus rau hauv amplified digital teeb liab nrog kev siv lub sensor. Lub sensor coj li cas yuav cuam tshuam ncaj qha rau lub koob yees duab zoo. Tsis tsuas yog lub sensor tab sis kuj qhov loj ntawm lub sensor tseem ceeb hauv lub koob yees duab. Yav dhau los, SLR 35mm films tau siv los tua cov duab. Tab sis tam sim no cov koob yees duab raug xa mus ua cov koob yees duab puv npo. Cov koob yees duab no muaj qhov ntsuas qhov loj me uas yuav luag qhov loj ntawm daim duab puv 35mm. Muaj lwm lub sensor hu ua APS-C, uas sawv cev rau Advanced Photo System hom-C. Qhov sib txawv tseem ceeb ntawm ob lub sensors, tag nrho cov ncej thiab APS-C, yog qhov loj.
Dab tsi yog Tag Nrho Sensor?
Cov duab tag nrho digital SLR sensor yog sib npaug rau 35 mm ib txwm ua yeeb yaj kiab siv yav dhau los. Qhov loj ntawm lub sensor yog 24 mm x 36 mm.
Txhawm rau sau ib pixel, lub sensor muaj lub teeb me me hu ua cov chaw yees duab uas ntes lub teeb thiab tso tawm pixel. Yog tias qhov chaw yees duab loj txaus, nws muaj peev xwm ntes tau ntau lub teeb. Nws kuj tseem tuaj yeem ntes cov cim tsis muaj zog. Qhov no muab lub sensor muaj peev xwm ua tau zoo tiag tiag hauv cov teeb pom kev tsis zoo. Tag nrho cov ncej sensor tseem tuaj yeem muaj qhov tob ntawm qhov loj dua vim qhov loj ntawm lub sensor. Daim duab viewfinder kuj yuav ci vim qhov loj ntawm lub sensor.
Lub koob yees duab nrog cov ncej tag nrho kuj tuaj nrog cov yam ntxwv siab kawg uas tsis muaj nrog lwm lub koob yees duab. Txawm li cas los xij, cov lo ntsiab muag uas muaj rau tag nrho cov ncej sensor yog tsawg dua qhov uas muaj rau APS-C sensor. Ib yam uas yuav tsum nco ntsoov yog tias qhov hnyav ntawm lub koob yees duab tag nrho nce tsis yog vim lub sensor tab sis vim yog qhov kim dua, loj, thiab hnyav lo ntsiab muag.
Lub ntsiab drawback ntawm cov hom sensors yog tias lawv kuj kim. Cov sensors no raug txiav tawm ntawm kim wafer chips. Tsuas yog 20 tuaj yeem txiav tawm ntawm ib tus qauv wafer. Qhov no txhais tau tias tag nrho cov nqi ntawm lub koob yees duab kuj yuav siab. Tab sis, raws li lub sensor no muab qhov zoo dua ntawm kev pom thiab lub lens zoo li zoomed tawm ntau dua, cov kws yees duab toj roob hauv pes nyiam lub koob yees duab tag nrho. Tag nrho cov ncej sensor muab qhov dav dav nrog lub kaum sab xis dav. Txawm li cas los xij, qee tus kws yees duab tsiaj qus nyiam APS-C sensor raws li lub koob yees duab rau kev zoom ntxiv. Yog vim li cas, lub sensor tsis ua ib feem ntawm magnification.
APS-C Sensor yog dab tsi?
Lub ntsiab lus ntawm APS-C yog Advanced Photo System type-C. APS muaj peev xwm txhawb nqa peb hom ntawv sib txawv. Qhov "C" sawv cev rau 'Classic' kev xaiv. Cov sensors no nyob ze rau qhov loj ntawm APS-C zaj duab xis uas lawv tau txais lub npe. Qhov tsis zoo ntawm APS-C yog 25.1 × 16.7 mm thiab nam piv yog 3: 2. Qhov no sensor yog me dua li tag nrho cov ncej sensor. Qhov loj ntawm lub sensor yog 24 x 16mm; me dua 35 hli zaj duab xis loj (36 mm × 24 mm). Qhov no txhais tau hais tias tag nrho cov thav duab sensor yuav ntes ib daim duab loj dua qhov APS-C tsuas yog ntes tau ib qho kev hloov pauv ntawm nws. Vim li ntawd, cov sensors tseem hu ua cropped ncej. Cov sensors no yog siv hauv DSLRs, tsom iav-tsawg hloov lub lens lub koob yees duab, thiab nyob saib ua ntej cov koob yees duab.
Cov qoob loo ntawm APS-C lub koob yees duab yog tsim rau cov tsiaj qus thiab kev ua kis las yees duab vim nws muab lub cev nyob deb uas yog qhov tseem ceeb hauv qee qhov xwm txheej. Tus nqi ntawm APS-C lub koob yees duab yog tsawg dua li lub koob yees duab tag nrho lub koob yees duab vim tias lub sensor tsis tshua muaj nqi. Cov teeb meem Lens kuj tseem tsawg dua vim cov duab raug cropped.
Qhov txawv ntawm Full Frame thiab APS-C yog dab tsi?
Sensor Size
Full Frame: Loj 24 x 36 mm
APS-C: Me 24 x 16 mm
Lub thav duab puv sensor muaj peev xwm ntes ntau qhov chaw tshaj li APS-C sensor. Cov duab kaw los ntawm ib lub thav duab tag nrho yuav zoo li cropped thaum txhaj nrog APS-C sensor.
Price
Full Frame: kim ua
APS-C: pheej yig dua
Puv ncej sensors kim dua los ua. Yog li lub koob yees duab uas siv tag nrho cov ncej sensor kuj yuav kim dua.
Lens Available
Full Frame: Loj
APS-C: Smaller
Muaj ntau hom lo ntsiab muag uas tuaj yeem siv nrog APS-C thaum piv nrog tag nrho cov ncej sensor.
View Finder Performance
Full Frame: Ntau brighter
APS-C: Brighter
Lub viewfinder ntawm lub koob yees duab puv npo yog ci dua piv rau nws los nrog daim iav loj dua.
Image Quality
Full Frame: Zoo dua
APS-C: Zoo dua
Ntau cov ntsiab lus zoo thiab ntau qhov kev ua haujlwm zoo dua ua rau tag nrho cov duab zoo dua.
Lub Cev Lub Cev Loj
Full Frame: Loj
APS-C: Smaller
Tag nrho cov ncej sensor yog loj. Tus kws yees duab hauv kev yuav nyiam lub koob yees duab APS-C raws li lub koob yees duab tag nrho vim nws qhov loj.
Supported File Size
Full Frame: Loj dua
APS-C: Smaller
Raws li tag nrho cov thav duab sensor tsim cov ntaub ntawv loj dua, yuav tsum tau yuav daim npav cim xeeb kim dua. Nws tseem yuav txwv lub peev xwm ntawm qhov nruab nrab siv.
Type of Photography
Daim Ntawv Qhia Tag Nrho: Toj roob hauv pes, vaj tse, khoom, kos duab thiab kev yees duab
APS-C: Kev ua si thiab yees duab tsiaj qus nrog macro.
APS-C muaj peev xwm tua cov duab ntawm qhov deb uas ua rau nws zoo tagnrho rau kev yees duab tsiaj qus.
Noise Level
Full Frame: qis
APS-C: Siab dua
Raws li lub sensor loj dua, nws muaj peev xwm ntes tau ntau lub teeb thiab txo suab nrov. Qhov no, nrog rau qhov muaj zog zoo dua, ua rau lub koob yees duab tag nrho zoo dua.
Summary:
Full Frame vs. APS-C
Los ntawm qhov kev sib piv saum toj no, nws pom tseeb tias muaj ntau qhov sib txawv ntawm ob lub sensors. Tag nrho cov ncej sensor muaj peev xwm tsim tau cov duab zoo dua nrog cov suab nrov tsawg, thiab txhawb kev ci ntsa iab thiab loj dua qhov pom, lub kaum sab xis dav dua thiab txo qhov tob ntawm thaj teb uas haum rau kev yees duab toj roob hauv pes. Qhov tsis zoo ntawm cov sensors no yog tias nws kim dua, ua rau lub koob yees duab loj dua, thiab yuav tsum siv lub lens hnyav dua.
Ntawm qhov tod tes, APS-C tsis tshua muaj nqi, txhawb nqa lub koob yees duab telephoto, thiab zoo rau kev yees duab tsiaj qus tab sis nws poob lub kaum sab xis ntawm lub lens thiab, vim tias lub sensor me me, lub suab nrov dua me ntsis piv.
Txawm li cas los xij, thaum kawg nws los rau cov neeg siv nyiam nyob ntawm seb hom kws yees duab nws yog. Cov ntsiab lus tseem ceeb saum toj no yuav cia siab tias yuav ua kom yooj yim rau kev txiav txim siab ntawm lub koob yees duab uas siv ob hom sensor.
Image Courtesy:
Image 1: "Cop Factor" by Self - Self. [CC BY 2.5] via Wikimedia
Image 2: "Sensor sizes overlaid inside" by Sensor_sizes_overlaid.svg: Moxfyrederivative work: Autopilot (tham) [CC BY-SA 3.0] via Wikimedia Commons
