Sony tus nkag-theem full-frame mirrorless lub koob yees duab yog ib tug tsiaj nyaum nyob rau hauv txhua txoj kev nrog nws 33-megapixel duab sensor, 4K60p video kaw, thiab ergonomic tsim.
Thaum Sony tso tawm a7 IV thaum lub Kaum Ob Hlis, nrog kev ua tiav ntawm nws cov a7 III, nws muaj qhov xav tau loj heev.Tus thawj coj tau tawm ntau tshaj plaub xyoos dhau los rau lub caij nplooj ntoo hlav 2018, tab sis tseem yog ib qho zoo tshaj plaws nkag-theem puv- frame koob yees duab rau ob qho tib si yees duab thiab yees duab.
Nrog qee qhov kev hloov pauv tseem ceeb thiab kev txhim kho lub neej zoo, Sony tau ua rau a7 IV ua tus txais txiaj ntsig tsim nyog rau lub npe ntawm lub koob yees duab zoo tshaj plaws hybrid.
Tau ntau xyoo dhau los, Sony tau tsim nws tus kheej ua ib lub tuam txhab zoo tshaj plaws mirrorless lub tuam txhab.Nws muag cov koob yees duab tsis pom kev zoo tshaj plaws hauv xyoo 2021, raws li NPD Group.Sony tsis tuaj yeem phim cov cuab yeej cuab tam kev lag luam ntawm Canon, Nikon lossis Fujifilm, tab sis nws tau ua si. lub luag haujlwm loj hauv kev nyiam lub koob yees duab mirrorless nrog nws cov Alpha series.
Txhua hom kev muaj tswv yim muaj lub koob yees duab Alpha, tab sis cov a7 series yog tsim los ua txhua yam.Lub a7 IV thiab nws cov kev tsim ntau yam tsis tuaj yeem phim a7R IV's 61-megapixel duab, thiab tau dhau los ntawm a7S III's 4K120p video kaw peev xwm. .Txawm li cas los xij, nws tseem ua lub luag haujlwm tseem ceeb ua qhov zoo siab nruab nrab ntawm ob lub koob yees duab tshaj lij.
Cov tswv yim yuav tau txais ib feem ntawm qhov muag yog tias koj yuav cov khoom los ntawm cov kev sib txuas hauv kab lus no.Peb tsuas suav nrog cov khoom ntawm nws tus kheej xaiv los ntawm pab pawg neeg sau ntawv sau.
Sony's a7 IV muaj lub koob yees duab zoo kawg hybrid uas tuaj yeem tua 33-megapixel duab thiab yees duab txog 4K60p.
Los ntawm Nikon, kuv xav tias yuav muaj lub sijhawm hloov kho loj rauhloovmus rau Sony system.Tab sis nws tsuas yog siv sijhawm li ob teev los ua si nrog a7 IV kom cov nyees khawm thiab tag nrho cov qauv tsim nyob hauv tsev.Sony cuam tshuam rau plaub lub khawm hloov tau, lub log uas tuaj yeem hloov kho, thiab muaj peev xwm rov ua dua AF. ON thiab AEL cov nyees khawm, tab sis kuv tsis xav tias kuv yuav tsum tau hloov ntau yam kom tau txais kev siv los ntawm kev teeb tsa.Thaum koj yuav tsum tau tweak nqis, cov ntawv qhia zaub mov tau zoo heev hauv pawg, ua kom yooj yim rau kev taw qhia txawm tias muaj ib tuj ntawm chaw.
Hauv kuv txhais tes me me, lub a7 IV muaj kev ruaj ntseg thiab xis nyob rau tuav, thiab tag nrho cov nyees khawm xav tias nyob rau hauv qhov chaw, tshwj xeeb tshaj yog cov ntaub ntawv.khawmuas txav ze ntawm lub shutter khawm.Lub joystick thiab scroll log nyees khawm yog tshwj xeeb tshaj yog tactile, cia kuv mus ceev ceev scroll los ntawm tawg ntawm cov duab thaum saib los yog kho cov phau ntawv tsom xam.
Cov lus qhia meej meej yog ib qho ntawm a7 IV qhov kev txhim kho loj tshaj plaws.Nws muaj ntau yam ntau dua li qhov khib pop-up npo ntawm a7 III, thiab tuaj yeem tig 180 degrees kom fim koj kom yooj yim vlogging lossis selfies.Rau nruj txhaj tshuaj ze rau ntawm hauv av, koj tuaj yeem pop qhov screen ib ncig ntawm 45 degrees yam tsis tas yuav khoov tsis txaus ntseeg kom pom tias koj qhov kev txhaj tshuaj zoo li cas.
Lub OLED viewfinder yog qhov zoo sib npaug.Nws loj thiab ci, thiab nws zoo li koj pom yuav luag cov duab koj yuav tau txais thaum koj nyem lub shutter.
Sony kuj tau tsim ib qho tshiab sub-dial hauv qab hom dial kom hloov pauv sai sai ntawm cov duab, yees duab thiab S&Q hom (luv rau hom qeeb thiab nrawm, uas tso cai rau koj kaw lub sijhawm-lapse lossis qeeb-suab video hauv-lub koob yees duab). xaiv qhov chaw khaws cia thaum koj hloov hom lossis cov kev pab cuam qee qhov chaw kom sib cais hauv cov qauv no.Nws yog ib qho yooj yim suav nrog, tab sis nws yog qhov tshwj xeeb uas ua rau muaj qhov sib txawv ntawm a7 IV.
Thaum nws los txog rau autofocus muaj peev xwm, Sony's Alpha lub koob yees duab yog unrivaled.Tib yam mus rau lub a7 IV.Vim hais tias ntawm qhov ceev thiab teb ntawm lub autofocus, nws yuav luag zoo li khib nyiab thaum tua nrog nws.Sony tau nruab Bionz XR tiam tom ntej. cov duab ua lub cav, uas tuaj yeem suav ua kom pom tseeb ntau zaus hauv ib ob, tso cai rau a7 IV txhawm rau txheeb xyuas lub ntsej muag lossis ob lub qhov muag sai sai thiab kaw autofocus ntawm nws.
Kuv muaj kev ntseeg zoo nkauj nrog a7 IV's autofocus kom nws nplaum rau qhov kev kawm, tshwj xeeb tshaj yog thaum kuv tab tom tua hauv hom tawg.Kuv muaj cov lus qhia me me thaum ntes kom pom tseeb rau lub thav duab zoo meej.Feem ntau ntawm lub sijhawm, kuv tsuas yog cia tus shutter tsim kua muag, raws li nws muaj peev xwm ntaus 10 ntas ib ob;Kuv ntseeg tias lub koob yees duab yuav ua kom kuv cov ntsiab lus ntse thoob plaws qhov tawg.
Nrog rau qhov zoo npaum li cas a7 IV lub ntsej muag / qhov muag-qhov tseem ceeb AF yog, kuv tuaj yeem tsom mus rau qhov muaj pes tsawg leeg.Qee lub sijhawm autofocus poob thiab tsom mus rau qhov tsis ncaj ncees lawm, tab sis nws ntse txaus los hloov lub ntsej muag lossis ob lub qhov muag kom rov qab tau.Rau cov ncauj lus tsis muaj ntsej muag , a7 IV tseem tuaj yeem pom cov ntsiab lus zoo hauv nws 759 AF cov ntsiab lus, txawm tias thaum kuv tau tua ntawm f/2.8.
Thaum txog li 33 megapixels (24.2 megapixels ntawm a7 III), muaj ntau yam kev ua haujlwm nrog thaum cropping duab, thiab qee qhov ntxiv leeway.Kuv tau sim lub a7 IV nrog Sony $ 2,200 FE 24-70mm F2.8 GM lens, yog li kuv tuaj yeem ua tau. zoom nyob rau hauv kho kuv framing nyob rau hauv feem ntau lub sij hawm.Rau qhov kev txhaj tshuaj kuv yuav tsum tau qoob loo, tseem muaj ntau yam nthuav dav nyob rau hauv lub hnyav cropped xaiv.
Nrog rau a7 IV's 15 nres ntawm dynamic ntau thiab ISO mus txog 204,800, qhov teeb meem tsis tshua muaj teeb meem tsis muaj dab tsi txhawj txog.Lub suab nrov pib pom nyob ib puag ncig ISO 6400 lossis 8000, tab sis tsuas yog tias koj tab tom nrhiav tiag tiag. Honestly, koj ' tej zaum yuav tsis muaj teeb meem cuam tshuam nws mus txog ISO 20000, tshwj xeeb tshaj yog tias koj tsuas yog upload cov duab rau Instagram lossis lwm yam kev tshaj xov xwm me me.Auto dawb tshuav nyiaj li cas kuj ua tau zoo nyob rau hauv tag nrho cov scenes kuv tso, nrog rau lub hnub ncaj qha. , pos huab, sab hauv tsev fluorescent thiab hauv qab daus incandescent teeb pom kev zoo.
Txij li thaum a7 IV yog lub koob yees duab hybrid, nws tseem tuaj yeem ua yeeb yaj kiab, txawm hais tias muaj ob peb yam teeb meem.Lub sensor muab tib yam meej video zoo thiab txhawb nqa 10-ntsis 4: 2: 2 rau tag nrho cov ntaub ntawv kaw lus, ua video yooj yim rau kev ua haujlwm hauv post.The a7 IV txhawb nqa S-Cinetone thiab S-Log3, yog li koj tau txais kev kho kom ntau li ntau tau nrog kev muab qhab nia xim thiab kev hloov kho.Los yog koj tuaj yeem siv 10 Creative Look presets los txiav cov kev hloov kho thiab ua rau koj lub neej yooj yim dua.
Lub a7 IV's tsib-axis hauv-lub cev duab stabilization ua rau kev txhaj tshuaj tuav tau zoo, tab sis muaj ib qho kev ua haujlwm uas cov qoob loo me ntsis ntxiv kom txo tau lub koob yees duab co.Txawm tias thaum kuv taug kev thiab tua yam tsis muaj gimbal thiab monopod, cov duab tuav tau ruaj khov txaus;nws tsis zoo heev cuam tshuam los kho thaum kho.
Muaj qee qhov kev ceeb toom tseem ceeb txog a7 IV lub peev xwm video, txawm li cas los xij.Raws li ntau tus tau taw qhia, 4K60p footage yog tiag cropped.Yog tias koj xav tua ntau cov yeeb yaj kiab zoo heev, qhov no tuaj yeem ua rau muaj kev cuam tshuam.Muaj kuj muaj. Qhov tseem ceeb dov shutter qhov teeb meem uas a7 IV nqa los ntawm nws cov thawj coj, tab sis tshwj tsis yog tias koj yog tus kws yees duab tshaj lij, nws yuav tsis muaj teeb meem.
Kuv nkag siab tias yog vim li cas Sony hu a7 IV ib "nkag-theem" hybrid lub koob yees duab, tab sis nws tus nqi $ 2,499 (lub cev nkaus xwb) yeej ua rau muaj qhov sib txawv.Yog tias peb txheeb ze, nws pheej yig dua li Sony qhov tseeb a7S thiab a7R qauv, ob qho tib si ntawm no. tus nqi $3,499 (lub cev nkaus xwb). Tseem, kuv xav tias tus a7 IV muaj nqis ntawm tus nqi no, vim nws twv yuav raug hu thaum nws los txog rau cov duab thiab yeeb yaj kiab.
Rau ib tug neeg zoo li kuv uas tua feem ntau tseem tab sis xav qee zaum dabble hauv video, a7 IV yog qhov kev xaiv zoo tshaj plaws.Kuv tsis tab tom nrhiav rau qhov zoo tshaj plaws video zoo, tsis yog tus ncej ceev tshaj plaws, yog li tua mus txog 4K60p yuav tsum txaus. , super ceev thiab txhim khu kev qha autofocus ua rau a7 IV xws li ib tug zoo txhua hnub tua.
Zuag qhia tag nrho, kuv xav tias zoo li Sony lub koob yees duab hybrid tau ntaus lwm lub tsev khiav.Yog tias koj tab tom nrhiav lub koob yees duab muaj peev xwm uas tuaj yeem ua haujlwm me ntsis sub-professional tseem thiab yees duab, a7 IV yog qhov kev pom zoo yooj yim yog tias tus nqi tsis tso koj tawm. .