DSLR Canon 7D: xyuas, specifications, cov lus qhia

SLR koob yees duab Canon EOS 7D, uas nyob rau hauv lub Cuaj Hli Ntuj 2009, cas tsis ua ib tug tag nrho-ncej qauv, uas yuav sau cov kis ntawm tus 5 D Mark II thiab 1D Mark III, raws li nws tej zaum yuav zoo li los ntawm cov xovxwm tso tawm lub Chaw tsim tshuaj paus thiab yog ib tug 18-megapixel APS-C- lub koob yees duab. Cuaj kaum, ntau cov neeg siv yuav tsum khiav dej num tau raug siv nyob rau hauv nws - ib tug wireless flash, 19-point AF, tus tshiab metering System iFCL, siv qhov kev ncua deb ntaub ntawv, cov xim thiab cov brightness ntawm cov kev kawm. Ntsiab nta Canon EOS 7D:

• Tso tawm duab sensor 18 Mn;
• Screen pom 3 "920,000-dot zaub;
• Ntaubntawv povthawj siv Full HD-yees duab hauv 30 f / s;
• wireless flash tswj.

Canon 7D: qauv piav qhia

Qhov no cov single-lens reflex koob yees duab yog nyob rau sab saum toj ntawm cov kab Canon APS-C-qauv, yav tas los nyob los ntawm cov EOS 50D. Thaum daws teeb meem ntawm 18 megapixels impressive, nws kuj ceeb toom hais tias cov CMOS-sensor qhov ntev sib npaug zos rau 22,3 × 14.9 hli tej zaum yuav tsis txaus, whereby dluab yuav ua heev ua pa nrov. Qhov no qhov teeb meem yog caum EOS 50D, tab sis lub chaw tsim tshuaj paus tau pom ib tug daws nyob rau hauv lub tshiab sensor. Canon tau txo lub cheeb tsam ntawm circuitry nyob rau hauv nws yuav ua tau kom qhov luaj li cas ntawm cov photodiode thiab muab kev rhiab heev thiab dynamic ntau yam.

Nyob rau hauv tas li ntawd, cov chaw tsim tshuaj paus siv ib tug tshiab tsim ntawm solar hlwb, uas tso cai rau mus txia mus ua ib tug hluav taws xob xwb ntau lub teeb thiab muaj zog teeb liab / suab nrov piv. Raws li nrog lub EOS 50D, 7D sensor nta gapless lub microlens, tab sis qhov kev ncua deb nruab nrab ntawm lawv thiab tus siv lead ua twb txo mus rau qhov kawg poob ntau photons.

Dua li ntawm qhov loj tus naj npawb ntawm pixels los ntawm ob processors Digic 4 thiab yim-channel readout, lub chaw tsim tshuaj paus yuav cuag nyiaj pab ntau tshaj mus shooting ceev sib npaug zos rau 8 / sec. Thiab nws yog tsis muaj yuav tsum tau rau ib qho ntxiv roj teeb pob rau Canon 7D. Nws yog noteworthy tias cov kev ua tau zoo ntawm cov koob yees duab 1 mus / los ntawm tus ceev tshaj plaws ceev uas yuav ncav cuag lub Nikon D300.

Nws yog ib nqi sau cia hais tias qhov kev soj ntsuam rau cov thawj lub sij hawm nyob rau hauv ib tug Canon EOS 7D qauv mus txog 100% ntawm cov 1-fold magnification (nrog 50 hli lens tsom ntawm infinity). Yog li ntawd, ib yam ua ntej lub tswv yim rau ntawm tus ncej zoo zoo heev rau cov duab kawg.

Viewfinder complements LCD zaub nrog on-screen saib. Txawm tias thaum displaying tus daim phiaj yog heev yooj yim kom tau ib tug ncaj qab ntug (tshwj xeeb tshaj yog thaum siv ib lub dav-angle lens, uas tsim e chim distortion), li ntawd, lub ua tau-nyob rau hauv hluav taws xob theem yog ua ntau heev. Canon 7D yog thawj DSLR-lub koob yees duab chaw tsim tshuaj paus nrog xws li ib tug muaj nuj nqi. Cov hluav taws xob theem yuav muab tso tawm kom ob leeg nyob rau hauv LCD screen los yog nyob rau hauv lub viewfinder. Thaum hu mus rau tus neeg siv muaj nuj nqi siv cov tshiab IV rau EOS-chamber mos tseem ceeb uas nyob ib sab mus rau lub shutter khawm, AF point yuav qhia seb lub koob yees duab yog nyob rau hauv lub kab rov tav txoj hauj lwm los yog tsis. Tu siab, lub theem disappears los ntawm cov viewfinder thaum koj pib teev los yog mus qhib lub tsom system, yog li ntawd thaum phau ntawv cov ntaubntawv povthawj siv yuav siv tsis tau "nyob".

Lub koob yees duab yog thawj kev nrog tus transmitter Speedlite, uas muaj peev xwm tswj tau nrog 3 pawg neeg ntawm flashes EX-series. Thaum kev khiav hauj lwm raws li ib tug tswv flash koob yees duab yuav pre-illumination, txawm yog hais tias nws yog tsis yuav tsum tau thaum lub sij hawm ntawm raug.

Thaum sufficiently siab nthuav dav kev pab them nqi kom zoo dua muab 1,6x magnification focal ntev nyob rau hauv nrog impressive ceev nruam shooting, ib tug tshiab AF system thiab ntau yam ntawm kev khiav dej num, Canon EOS 7D yog txaus nyiam heev rau budgetary los yog cov kev ua si photography photohunting, uas feem ntau yuav tsum tau APS-H los yog ib tug tag nrho-ncej koob yees duab.

tsim

Nyob rau hauv cov nqe lus ntawm loj thiab nyhav, Canon 7D xyuas yog positioned ntawm cov 50D thiab tag nrho cov ncej 5 D Mark II. Ib yam li lawv, tus qauv yog tsim los ntawm magnesium alloy thiab yog kev tiv thaiv tiv thaiv dej allergic. Canon hais tias cov dej kuj ntawm lub koob yees duab assigns nws mus rau tib qeb li hais tias ntawm ib tug kws theem koob yees duab EOS-1n.

Txawm tias tus luj ntawm lub cev yog sib npaug zos rau 820 g, ua tus qauv yog heev hnyav, nws zoo thiab roj hmab yuav tsum vov lub kov muab ib tug xis thiab muaj kev nyab xeeb lub lag luam. Txawm tias tom qab lub shooting ntawm ib tug football match yog tseem txhais tes pib xav tias tus sab, txawm siv ntawm ib tug kuj me me thiab khaub-ncaws nyias rau Canon 7D Lens EF 70-300 hli f / 4.5-5.6 DO YOG USM.

EOS 7D ntawm lwm yam uas zoo li 5 D Mark II tshaj lub 50D, tab sis muaj ib co tseem ceeb sib txawv. Piv txwv li, nyob View khawm nyob rau sab laug ntawm lub qab ntawm lub 5 D Mark II ntawm qhov screen yog txav mus rau sab xis ntawm lub 7D viewfinder thiab yog tam sim no ib puag ncig los ntawm ib tug mus, uas translates rau hauv on-screen saib hom thiab video. Nws yog ib tug ntse tawm, vim hais tias tam sim no cov kev tswj yog tsis pub dhau ncav tsis cuag ntawm tus ntiv tes xoo ntawm nws sab tes xis.

Qhov chaw vacated los ntawm Live View, nyob los ntawm ob lwm nyees khawm. Ib cim raws li lub Q, yog siv rau ceev nkag tau mus rau cov kev tswj screen. Lwm hloov los ntawm lub RAW thiab JPEG cov ntaubntawv povthawj siv hom ntawv nyob rau hauv RAW + JPEG, thiab ces tua lub koob yees duab rov qab mus rau tus thawj hom. Qhov no yuav ua tau pab tau thaum shooting JPEG-cov ntaub ntawv rau ntau series puav yuav tsum tau nyoos ntaub ntawv rau ntxiv yooj rau ntawm tus ncej ua.

Yooj yim uas siv

Nyob rau hauv ceev Control screen qhia txog cov 16 feem ntau tom tsis, nyob rau hauv t. Ch. Nws pib teeb pom kev zoo optimizer. Lawv yuav tsum tau xaiv siv lub analog stick, thiab tej disc. Cov zaub no pab tau rau ib tug ceev daim tshev ntawm lub chaw thiab ua hauj lwm zoo hloov, tab sis muab cov dawb tshuav nyiaj li cas, AF hom, thiab hais txog. N. neeg siv tseem xum siv rau sab saum toj vaj huam sib luag.

Zoo li tag nrho cov DSLR koob yees duab Canon, EOS 7D ntawv qhia zaub mov yog muab faib mus rau hauv cov ntxaij vab tshaus, txhua tus uas yog muab tso rau hauv LCD vaj huam sib luag, ua rau nws yooj yim mus nrhiav kev khiav dej num. Ntawm lwm yam uas lub video, piv txwv li, muaj nyob rau ib daim nplooj ntawv uas tso cai rau koj kom sai teem lub koob yees duab mus yees duab cov ntaubntawv povthawj siv.

Nrog rau qhov sib ntxiv ntawm video yees thiab ntxiv flash kev xaiv soj ntsuam Canon 7D neeg siv chaw yog tsis txaus 6 zog. Rau tus so, tsis muaj dab tsi yuav yws txog.

duab chaw

Lub system dawb tshuav nyiaj li cas, Canon EOS 7D, raws li tus neeg siv kev xyuas, tsis muaj dab tsi tau hloov. Nws muaj kev kawm ntawv siab nyob rau hauv ib tug ntau ntawm cov teeb pom kev zoo tej yam kev mob. Cov duab no yog tsis raug ntev kho, thiab thaum shooting ntaub ntawv no muaj nyob rau txog cov xim ntawm lub teeb.

Raws li ib txwm, lub EOS 7D muaj ib tug txheej ntawm pre-ntsia dluab yeej (standard, portrait, toj roob hauv pes, tej yam ntuj tso, yog thiab monochrome) thiab 3 cov neeg siv. Koj muaj peev xwm tswj tau lub sharpness, zoo, saturation thiab Hawj txawm ntawm cov xim thiab cov monochrome ncej. Standard hom nkawd kuj nce mentsis oversaturated, yog li ntawd cov neeg siv xum siv tej yam ntuj tso los yog caij nyoog kev xaiv.

metering

Lub koob yees duab Canon 7D yog txawm peem rau nrog rau xim lub teeb (iFCL) thiab 63-cheeb tsam metering. Yuav kom txiav txim seb qhov kom zoo raug, nws yuav siv cov lus qhia txog qhov kev ncua deb rau tus kwv los ntawm lub AF system, thiab cov lus qhia txog cov xim thiab cov brightness. Es tsis txhob yog ib tug sensor nyob rau EOS 7D yog ob tug ntawm lawv: ib teb mus rau lub liab thiab ntsuab lub Cheebtsam, thiab lwm yam - nyob rau ntsuab, thiab xiav. Raws li ib tug tshwm sim, lub metering system yog tsawg rhiab rau lub teeb liab.

Txij li thaum cov ntaub ntawv no yog siv autofocus, chaw AF point yog paramount tseem ceeb. Piv txwv li, yog hais tias nws yog nyob rau hauv cov nyom, cov foreground yog tshaaj zoo, thiab cov overcast ntuj yuav overexposed. Yog hais tias peb kub siab rau cov huab, lawv yog ncauj lus kom ntxaws, thiab cov av puv underexposed. Txawm tias evaluative metering tau pov thawj zoo nyob rau hauv tej lub sijhawm, raws li nyob rau hauv ntau zoo xws li cov systems, nws yuav tsis tau tiv nyob rau hauv overcast tej yam kev mob.

Canon 7D: neeg siv autofocus

Lub koob yees duab tau txais ib tug tshiab 19-point AF system. Tag nrho nws cov ntsiab yog tus ntoo khaub lig-hom lo ntsiab muag, thiab yog zoo nrog ib tug tshaj plaws aperture ntawm f / 5.6 los yog ntau dua. Ntxiv cov neeg thib ob, kab pheeb ces kaum X-zoo li tus ntoo khaub lig nrog f / 2.8 thiab ntau central qhov chaw. Tsis tas li ntawd, muaj cov txav los ntawm 2 txoj kab nyob rau hauv nruab nrab ntawm lub qaum, qis thiab central ntsiab lus. Raws li ib txwm, muaj AF hom 3: kauj ruam (rau ruaj ruaj khoom), AI Servo (kev tsiv) thiab cov kabmob AI kom pom tseeb, uas cia li keyboards ntawm pov tseg thiab ntev thaum tus kwv pib los yog tsis muaj zog.

3 muaj AF txoj kev xaiv: ib, tsam, thiab ib qho automatic 19-point. Cov kev xaiv thawj muab txoj kev txiav txim rau ib daim duab, thiab rau tom kawg nyob rau hauv tag nrho cov tswj lub koob yees duab.

Qhov thib ob xaiv 19 faib tau ua 5 aav ntawm sensors, thiab tus kws yees duab xaiv ib yam pab pawg neeg. Nws yog siv thaum tsiv khoom thaum lub automation yog qhov nyuaj heev kom khiav ntawm ib tug taw tes, thiab nws tsom rau qhov ze tus kwv. Thaum nws yog ib qhov nyuaj siab rau ib tug ib feem ntawm lub scene - piv txwv li, lub taub hau ntawm ib tug neeg uas ua ntawv nyob rau hauv ib tug football match.

Nws pib xaiv 19-point hloov Canon 7D xyuas rau cov khoom uas tsiv mus nyob erratically, thiab cov koob yees duab nyhav mus nrhiav tus nyob ze tej zaum lub hom phiaj. Nyob rau hauv cov kabmob AI Servo kws yees duab yuav tau teem lub pib taw tes AF thiab cov koob yees duab lem nws. Nyob rau hauv cov hom, lub active ntsiab yog tseem ceeb thaum lub AF cai muaj nuj nqi III-10, yog li nws yog heev yooj yim mus saib seb puas los yog tsis cov khoom ntawm lub koob yees duab kev.

Siv kev cai muaj nuj nqi III-6 nyob hauv lub neej ntawd daim ntawv teev yuav muab ntxiv ob ntxiv AF hom xaiv. Qhov no Spot AF, uas zoo li ib tug tib ncej, tab sis rau ntau dua cov neeg nyob rau hauv cov nqe lus nws yog tsawg dua. Nyob rau hauv cov ntaub ntawv no, tus yees duab xaiv yuav ua li cas manually, tab sis lub EOS 7D yuav siv tau thiab surrounding cov ntsiab lus. Raws li siv tswv yim, qhov no yog heev pab tau thaum shooting kev ua si. Nyob rau hauv sib piv rau lub pib xaiv 19-point AF hom AI Servo, lwm tus lub point yog tsis tseem ceeb thaum lawv muaj siab ntseeg.

Ob txoj kev xaiv nyob rau hauv tus neeg siv ntawv qhia zaub mov, qhov rhiab heev ntawm nrhiav AI Servo (III-1) thiab cov kabmob AI Servo AF (III-3), ntxiv ntxiv yooj thaum tsom rau tsiv kev kawm. Cov kev pab tau yav tas los tau thov xwb nyob rau hauv lub 1D Mark III thiab 1Ds Mark III. Lawv txiav txim seb tus 7D tseem ua kom pom tseeb rau hauv kev kawm thaum lub closer cov kwv yog nyob rau hauv tus ncej, thiab yog hais tias tsis yog, yuav ua li cas sai sai nws yuav tsum teb. Tus aim ntawm lawv ua hauj lwm yog los pab kev pab txog kom khiav ntawm koj kawm thiab, yog tias tsim nyog, yuav las mees cia li zoo li ntawm, piv txwv li, lub kem nyob rau hauv tus ncej thaum panning. Nyob rau hauv dav dav, lub AF system Canon 7D tswv xyuas hu ua impressive. Txij li thaum cov khoom ib qho yooj yim mus taug nyob rau hauv lub viewfinder, tus xov tooj ntawm kev vam meej kev txhaj tshuaj tshaj 90%.

Nyob rau hauv ntau txoj teeb meem, lub AF point (los yog pab pawg neeg) los tuav nws yog ib qhov nyuaj, tab sis thaum zoo li no, qhov tshwm sim yog ntse nyob rau hauv feem ntau ntawm cov rooj plaub ntug. Yog tias lub scene lacks ib tug loj tus naj npawb ntawm tej cuam, yeem ntse xaiv 19-point AF hom AI Servo nrhiav yam khoom copes txig.

Daws teeb meem, suab nrov thiab rhiab heev

Tswv yim los ntawm cov neeg siv, Canon lub tuam txhab tau noj kauj ruam tseem ceeb mus rau nrog lub suab nrov ib ncig ntawm lub rhiab heev hloov ntau yam. Qhov txawv ntawm cov dluab EOS 50D thiab 7D yog feem ntau hnov ntawm ISO 12800. no, lub suab nrov yog kwv yees li ib nrab. Txawm muaj ISO 3200 cai lawv theem yuav txo tau ntawm txog 30%. Interestingly, lub suab nrov tsis rau txhua channel yog zoo nkauj nyob ze, qhia ib yam tis. Txawm tias high-rhiab heev duab EOS 7D muaj ib tug grainy kev ntxhib los mos, lawv muaj ntau smoother tshaj cov 50D. Ntas saib zoo nyob rau hauv monochrome thiab tsaus halftones yog tsis muaj bands.

Nyob rau hauv computer screen Heev rhiab JPEG-dluab yog tag nrho kev nthuav dav, tab sis muaj ib co thaj ua rau thaj ntawm cov xim. Qhov no yog tsis ntshaw, tab sis lawv tsuas yog pom nyob rau hauv magnification mus txog A3 loj. Duab ua nyob rau hauv ISO 6400 thiab saum toj no, txawv random liab pixelation. Zuag qhia tag nrho EOS 7D captures ib tug ntau ntawm nthuav dav. Txawm nyob rau ntawm ISO 12800 lub koob yees duab muab tsim nyog ua tau zoo.

dynamic ntau yam

Nyob rau hauv lub neej ntawd chaw, Canon EOS 7D muaj ib tug dynamic ntau 12EV, uas sib raug rau qhov zoo tshaj plaws SLR koob yees duab tso tawm 2009 lub koob yees duab muaj 2 kev xaiv los txhim kho nws: nrog kev pab los ntawm nws pib Teeb pom kev zoo Optimizer thiab lub teeb laus tseem ceeb. Keeb kwm lightens hauv ntxoov ntxoo thiab yuav siv tau nyob rau hauv phau ntawv raug hom, tab sis nws yuav siv tsis tau ib txhij nrog tus thib ob. Yog li ntawd, kom tau khaws cia highlights cov lus zoo siv raug lwm yam uas, thiab ces - Teeb pom kev zoo Optimizer mus tso saib lub ntsiab lus ntawm ntxoov ntxoo nyob rau hauv JPEG cov ntaub ntawv. Cov nyhuv kuj tau mus thov kom cov ntaub ntawv uas yog RAW- postprocessing muaj software Digital Photo Professional.

xim spectrum

Thaum teem rau tus txheej txheem style duab nrog ib tug xim qhov chaw ntawm tsev av RGB Canon 7D, raws li kev txheeb xyuas ntawm tus tswv, muaj peev xwm sawv ntawm capturing yuav luag tag nrho ntau yam ntawm ICC nrog ib tug heev tus liab, mauve thiab ntshav tones. Raws li ib txwm, lub ntsuab pab them nqi yog ib tug me ntsis xwb, vim li ntawd nws yog tsis nkaus npog tag nrho cov tsev av RGB qhov chaw.

LCD, viewfinder thiab video

Txawm hais tias EOS 7D muaj ib tug taag screen, Canon tau nruab nws nrog ib tug pob tshab LCD zaub uas tso cai rau koj los tso saib ib puas daim phiaj, hluav taws xob theem, raws li zoo raws li taw tes thiab AF cheeb tsam. Nyob rau hauv feem ntau teeb meem, rau hauv daim ntawv tus, ntshiab thiab kaj, tab sis tej zaum, nyob rau hauv lub tswv yim ntawm cov neeg siv ntawm tus vaj huam sib luag pom lub teeb kev ntxhib los mos ntawm fuzzy qhov chaw ntawm tus laus. Thaum lub viewfinder kaj txaus los muab phau ntawv ntawm, nyob rau hauv feem ntau lub sijhawm nws yog zoo dua rau siv ib tug duab loj loj rau cov LCD screen. Nws yog yooj yim yuav tsum tau leej, thaum qhov yuav tsum tau thaj tsam ntawm lub scene yog nce.

Zaub EOS 7D yog 3 inches nyob rau hauv kab pheeb ces kaum thiab kev daws teeb meem 920K. Ntsiab lus (307 txhiab. Pixels). Yuav kom txo tau xav mus xav thiab glare, Canon screen nyob rau kis ntawm tus muaju thiab cov iav nto ntawm tus tshiab txhav resilient kho qhov muag khoom uas refractive index yog sib npaug zos rau cov iav. Qhov no muaj pov thawj yuav tsum tau kev txaus cai, vim hais tias cov zaub muab ib tug heev ntshiab duab txawm nyob kaj lug ambient lub teeb.

Video tej zaum yuav raug kaw nrog ib tug daws teeb meem ntawm 1920 × 1080 pixels (Full HD) nyob rau hauv 30, 25 los sis 24 f / s, thiab 1280 x 720 los yog 640 x 480 - 60 los yog 50 f / s. Raws li nrog lub on-screen saib hom thaum lub sij hawm video ntaubntawv povthawj siv yuav autofocus, tab sis nws yog feem ntau zoo dua siv phau ntawv tswj, raws li cov system yog nws mus deb tawm lub hom phiaj.

Nyob rau hauv tas li ntawd, yog hais tias tus lub suab txias siv ib tug nrog monaural microphone (muaj nkaus rau ib tug sab nraud microphone), nias thiab tes taw zoo nyoog. tag nrho ntawm ntau yam, thiab tus taw ntawm lub siab tshaj plaws kev daws teeb meem, thiab video ncej nqi.

xaus

Tshiab EOS 7D tus AF system yog impressive, thiab nws cov nyiaj pab ntau tshaj siv yuav tsum tau ib tug zoo kev nkag siab ntawm cov kev kawm los ntawm tus taw tes ntawm view ntawm lub koob yees duab, raws li zoo raws li kev txawj ntse ntawm muaj neeg siv-txhais kev khiav dej num. Qhov no ua rau tus lineup Canon AF dua qib Nikon. autofocus EOS 7D system haum zoo nrog lub siab tshaj plaws mus shooting tus nqi ntawm 8 K / s, uas ua rau cov koob yees duab ib qho kev yoj rau cov loj cov kev ua si enthusiasts thiab cov tub txawg uas yuav them tsis taus 1D Mark IV nqis 4499 dollars, los yog cov neeg uas tsis xav tau ib tug loj sensor . Raws li siv tswv yim, cov duab nyob rau hauv lub hom ntawm high-ceev nruam shooting tej zaum raug kev txom nyem los ntawm ghosting, tab sis lub chaw tsim tshuaj paus tau tso tawm ib tug firmware hloov tshiab uas yuav tsum tshem tawm qhov drawback.

Canon tus engineers zoo li muaj nyob mus txog rau lawv cov kev ntshaw, ho paub lub EOS 7D piv rau lub 50D. Ho nce nthuav dav kev txhaj tshuaj thiab lub suab nrov thoob plaws lub Translation ntau yog tshuaj zoo npaum li cas, ua rau cov koob yees duab ntau ntau yam.