DSLR Canon 7d: ukubuyekezwa, Ukucaciswa, imiyalelo

SLR ikhamera Canon EOS 7d ezavela Septhemba 2009, akazange abe imodeli Uhlaka esigcwele, okwakuyoholela ukugcwalisa igebe phakathi 5D Mark II futhi 1D Mark III, njengoba kungase kubonakale kusukela ukukhululwa press nomkhiqizi futhi kuyinto 18-megapixel APS-C- ikhamera. Noma kunjalo, abasebenzisi eziningi kulindeleke imisebenzi Kuye ukusebenza ngo-ke - flash engenantambo, 19-iphuzu AF, entsha Metering System iFCL, usebenzisa ulwazi ibanga, umbala nokukhanya tesifundvo. Izici Key Canon EOS 7d:

• Khishiwe isithombe inzwa 18 MN;
• Isikrini ekukhunjulwa 3 "isibonisi 920,000-dot;
• Ukuqopha Full HD-yevidiyo ngo 30 f / s;
• engenantambo flash control.

Canon 7d: incazelo imodeli

Lokhu digital olulodwa-lens reflex ikhamera phezulu emgqeni Canon APS-C-tinkhulumo, ngaphambili elalihlala EOS 50D. Nakuba isinqumo 18 megapixels umxhwele, liphinde lixwayise ngokuthi izilinganiso CMOS-inzwa elilingana 22.3 × 14.9 mm bangase babe owanele, lapho izithombe bathambekele babanga umsindo kakhulu. Lo magazini okuphishekelwayo EOS 50D, kodwa umakhi ithole nekhambi inzwa entsha. Canon kuye kwanciphisa endaweni busebenze kuwo ukwandisa ubukhulu photodiode futhi ahlinzeke sensitivity high futhi uhla ashukumisayo.

Ngaphezu kwalokho, umenzi esetshenziswa umklamo entsha nama-solar, esangenza okuguqula zibe kagesi ngaphezulu ukukhanya futhi ngakhula isignali / umsindo isilinganiso. Njengoba ne EOS 50D, 7d inzwa izici okungenazikhala le microlens, kodwa ibanga phakathi kwabo kanye crystal lancipha zinyanga wawa izinhlayiyana eziningi zokukhanya ngaphezulu.

Naphezu inani elikhulu Amaphikseli by izilimi ezimbili Digic 4 nesishiyagalombili-isiteshi readout, umenzi kungawufinyelela esiphezulu okuqhubekayo ukudubula ngesivinini elilingana 8 / umzuzwana. Futhi asikho isidingo sokuba battery pack eyengeziwe ngoba Canon 7d. Kuyaphawuleka ukuthi ukusebenza ikhamera 1 kuya / kusuka isivinini ngokushesha esiphezulu ukuthi ngifinyelele Nikon D300.

Kuyaphawuleka ukuthi ukubuyekezwa okokuqala endaweni Canon 7d EOS onobuhle safinyelela 100% ukukhulisa 1-nesibaya (nge 50mm lens igxile at infinity). Ngakho-ke, umqondo owandulelayo Uhlaka ibukeka ifana kakhulu isithombe sokugcina.

Isitholi sokubonwayo namakhi sigcwalisa LCD isibonisi ekuskrini wokubuka. Ngisho uma kuboniswa igridi kunzima kakhulu ukuthola umkhathizwe ngqo (ikakhulu uma usebenzisa lens ebanzi-angle, okuyinto kudala e emgqonyeni ukuhlanekezela), ngakho esakhelwe amazinga electronic Sekuvamile ngaphezulu. Canon 7d kuyinto nomkhiqizi DSLR-ikhamera okokuqala nge umsebenzi onjalo. Izinga electronic ingaboniswa kokubili esikrinini LCD noma kusitholi sokubonwayo. Lapho ebiza umsebenzi umsebenzisi usebenzisa IV entsha ngoba EOS-chamber ezithambile ukhiye eseduze inkinobho yokucina, AF iphuzu izobonisa ngabe ikhamera yindawo evundlile noma cha. Ngeshwa, izinga ushabalala kusitholi sokubonwayo lapho kokuqala ukurekhoda noma ukwenza kusebenze uhlelo ngokugxila, ngakho lapho ukuqopha manual ayikwazi ukusetshenziswa "bukhoma".

Ikhamera yaqale afundziswe ngekuhlanganiswa Lidlulisela Speedlite, okuyinto angakwazi ukulawula namaqembu 3 lunokukhanya EX-chungechunge. Lapho usebenza njengomhloli okuyinhloko flash ikhamera izovele oyi-ukukhanya, ngisho noma ayidingeki ngesikhathi ukuchayeka.

Ngezinye ngokuningiliziwe sezingeni eliphezulu Ukusabalala inzuzo enikeziwe 1,6x kokukhulisa ubude ebalulekile ngokuhlanganyela isivinini umxhwele ukudubula okuqhubekayo, entsha AF uhlelo kanye anhlobonhlobo imisebenzi, Canon EOS 7d ekhangayo ngoba kwesabelomali noma ezemidlalo izithombe photohunting, okuyinto ngokuvamile zidinga APS-H noma ikhamera Uhlaka esigcwele.

design

Ngokuya ubukhulu nesisindo, Canon 7d Izibuyekezo ibekwe phakathi 50D futhi uzimele umnyuziki 5D Mark II. Njengabo, imodeli wenziwe-magnesium alloy futhi ivikelwe amanzi Ukungena. Canon uthi ukumelana namanzi ikhamera esabela ukuba isigaba efanayo ukuthi uchwepheshe ezingeni ikhamera EOS-1n.

Nakuba isisindo umzimba ilingana 820 g, okwenza imodeli ngempela ezisindayo, ezakheke iraba esehlanganise isibambo ihlinzeka operation ukhululekile futhi ephephile. Nakuba ngemva ngokudubula webhola namanje isandla eseqala ukuzwa uhlobo, naphezu ukusetshenziswa incane futhi engasindi for Canon 7d Lens EF 70-300 mm f / 4.5-5.6 DO IS USM.

Izilawuli EOS 7d zifane 5D Mark II ngaphandle 50D, kodwa kukhona abanye umehluko omkhulu. Ngokwesibonelo, Buka inkinobho Phila elise kwesokunxele ngemuva 5D Mark II esikrinini kugudlukela ngakwesokudla kusukela 7d kusitholi sokubonwayo manje lizungezwe switch, okuyinto uhumusha ekuskrini izindlela wokubuka nevidiyo. Kuyinto hambisa smart, ngoba manje control ifinyeleleke sesandla sakhe sokunene.

Isikhala baphume ngu Buka Live, elalihlala nezinye izinkinobho ezimbili. Emakwe njengoba Q, isetshenziselwa ukufinyelela okusheshayo isikrini ukulawula. Olunye ushintsho kusukela RAW futhi JPEG ukuqoshwa yokwakheka RAW + JPEG, bese esingu uyabuya ikhamera imodi yasekuqaleni. Lokhu kungaba usizo lapho ngokudubula JPEG-amafayela esiphezulu uchungechunge ngezikhathi ezithile kudingeka ifayela zokusetshenziswa for unenkululeko ezengeziwe processing uzimele.

Ubulula

Esikrinini Quick Control ubonisa 16 nemingcele ngokuvamile ishintshwe, t. Ch. Auto ukukhanyisa esivimba. Abakwazi kukhethwe usebenzisa induku analog, iyiphi disc. Isibonisi kuyasiza ukuhlola okusheshayo of izilungiselelo netingucuko tekusebenta, kodwa ukusetha ibhalansi elimhlophe, imodi AF, nokunye. N. Abasebenzisi namanje bakhetha ukusebenzisa phezulu kwephaneli.

Njengazo zonke amakhamera DSLR Canon, EOS 7d imenyu sehlukaniswe zesikrini, ngamunye okuyinto ibekwe phezu panel LCD, okwenza kube lula ukuze useshe imisebenzi. Kulawula ividiyo, isibonelo, zitholakala ekhasini elehlukile elikuvumela ukuba ngokushesha usethe ikhamera yevidiyo ukurekhoda.

With the kwalokho isiqophi ubuchwepheshe kanye ezengeziwe ongakhetha flash screen izilungiselelo umsebenzisi Canon 7d kwakunganele 6 imisebenzi. Kukho konke, lutho ukuze bakhononde ngamamaki.

izilungiselelo isithombe

Uhlelo ibhalansi elimhlophe, Canon EOS 7d, ngokuvumelana izibuyekezo umsebenzisi, akukho okushintshile. It unikeza ukusebenza high e anhlobonhlobo izimo zokukhanya. Isithombe kungukuthi ngaphansi ukulungiswa ngokweqile, futhi uma ngokudubula lwazi lutholakala mayelana umbala ukukhanya.

Njengenjwayelo, EOS 7d sesinesethi olufakwe izithombe izitayela (ejwayelekile, portrait, landscape, yemvelo, olunembile futhi ezinombala ofanayo) futhi 3 umsebenzisi. Ungakwazi ukulawula nokucija, nika umehluko, saturation futhi luhlaza wombala ezinombala ofanayo uzimele. Imodi Standard kubonakala kancane oversaturated, ngakho ke abasebenzisi bakhetha ukusebenzisa ongakhetha zemvelo noma ngqo.

metering

Ikhamera Canon 7d ifakwe umbala ukukhanya (iFCL) angu-63 indawo metering. Ukuze sithole ukuchayeka efanele, lisebenzisa ulwazi mayelana nebanga into kusukela uhlelo AF, futhi ulwazi mayelana umbala nokukhanya. Kunokuba kube inzwa ngesikhathi EOS 7d ezimbili zazo: omunye esabela yezingxenye abomvu green, kanye nezinye - kwi oluhlaza, futhi okwesibhakabhaka. Ngenxa yalokho, uhlelo metering lingaphansi nozwelo elibomvu.

Njengoba ulwazi isetshenziswa autofocus, indawo AF iphuzu kubaluleke kakhulu. Ngokwesibonelo, uma itholakala etshanini, ongaphambili ichonywe kahle, futhi isibhakabhaka liguqubele kuba wachayeka. Uma sigxila amafu, zingabantu esinemininingwane, futhi inhlabathi kuvela esingacacile. Nakuba metering kuhlola ikufakazele ngempumelelo kwezinye izimo, njengoba kumasistimu eziningi ezifanayo, ngeke babhekane ezimweni liguqubele.

Canon 7d: umsebenzisi autofocus

Ikhamera got entsha 19-iphuzu AF uhlelo. Zonke izici kwakhona cross-uhlobo lens, futhi isebenza kahle nge beso esiphezulu f / 5.6 noma ngaphezulu. Ukuze uthole ukunemba lwesibili olwengeziwe, idayagonali engu- X-ezimise nge f / 2.8 nendawo emaphakathi ngaphezulu. Ngaphezu kwalokho, lapho udlulele by 2 imigqa ovundlile phakathi amaphuzu engenhla, ephansi nemaphakathi. Njengenjwayelo, imodi etholakalayo AF 3: isinyathelo (ngoba izinto umile), AI Servo (ngoba ezihambayo) kanye AI Focus, okuyinto ngokuzenzakalelayo sekuqalile phakathi alahlwayo kanye eside uma into iqala noma eyeka ukunyakaza.

3 etholakalayo AF indlela ukukhetha: olulodwa, indawo, futhi automatic 19-iphuzu. Inketho yokuqala ikunika isinqumo esifanele isithombe, kanti isixuku esikhulu GCWELE ENGAMELA ikhamera.

Eyesibili inketho 19 ihlukane 5 esishintshashintshayo izinzwa, kanye photographer ukhetha iqembu oyifunayo. Isetshenziselwa lapho izinto ezinyakazayo lapho ezishintshayo kunzima ukugcina ithrekhi iphuzu elilodwa, futhi igxila emandleni into eliseduze. Lapho kunzima ukugxila ingxenye ethile yesehlakalo - isibonelo, inhloko umdlali ikakhulukazi emdlalweni welibhola letinyawo.

Khetha ngokuzenzakalelayo 19-iphuzu Ukulungiswa Canon 7d izibuyekezo izinto ukuhambisa ngezinga elingafani, ikhamera ivame ukuba ufune eseduze target ezingaba khona. Esikhathini AI Servo umthwebuli ungabeka AF isiqalo iphuzu futhi ikhamera ilandelela ke. Kulezi izindlela, izakhi asebenzayo zigqanyisiwe lapho AF Custom Umsebenzi III-10, ngakho-ke kulula kakhulu ukubona yini noma cha into ofanele amathrekhi ikhamera.

Ukusebenzisa ngokwezifiso umsebenzi III-6 ohlwini okuzenzakalelayo kungenziwa wanezela ezimbili ezengeziwe imodi yokukhetha AF. Lokhu Spot AF, okuyinto ifana Uhlaka olulodwa, kodwa ngokunemba okukhulu ngokuya kuba ngaphansi. Kulokhu, ukukhethwa isithombe kwenziwa ngesandla, kodwa EOS 7d ingasetshenziswa futhi amaphuzu ezizungezile. Ngokusho impendulo yomsebenzisi, lokhu kuyasiza kakhulu uma ngokudubula ezemidlalo. Ngokungafani auto ukhetha 19-iphuzu imodi AF AI Servo, ezungeze iphuzu is hhayi kuqokonyiswe lapho zivuliwe.

Ababili ongakhetha kwimenyu umsebenzisi, nozwela ethungatha AI Servo (III-1) kanye AI Servo AF (III-3), unezela Ukuzivumelanisa nezimo okwengeziwe uma ukugxila ezihambayo izifundo. Amathuba anjalo okwenza uke isetshenzisiwe kuphela 1D Mark III futhi 1Ds Mark III. Bona ukuthi noma ngabe 7d siqhubeke ugxile kusihloko lapho eduze into in the ifremu, futhi uma kungenjalo, kufanele baphendule ngokushesha kangakanani. Inhloso yomsebenzi wabo ukusiza bezithombe lokhozi yesihloko sakho futhi, uma kunesidingo, ukuziba ukuvela ngasikhathi sinye, isibonelo, ikholomu uzimele lapho ukukhulisa. Ngokuvamile, i-AF uhlelo Canon 7d abanikazi Izibuyekezo ngokuthi umxhwele. Njengoba izinto kulula ukulandelela kusitholi sokubonwayo, inani isibhamu yimpumelelo engaphezu kuka-90%.

Ngo ngaphezulu izimo eziyinkimbinkimbi, iphuzu AF (noma iqembu) ukubamba kunzima, kodwa uma kwenzeka lokhu, umphumela uba elibukhali iningi amacala. Kuncike ekutheni yesehlakalo ongenawo inombolo enkulu ukuphazamiseka okungaba khona, uyazikhethela Ukukhetha smart 19-iphuzu AF imodi AI Servo into ethungatha ubhekana kahle.

Ukulungiswa, umsindo kanye nokuzwela

Impendulo kusuka kubasebenzisi, Canon inkampani selithathe izinyathelo ezibalulekile ukubhekana umsindo emhlabeni ububanzi ukuzwela ukulungiswa. Umehluko phakathi izithombe EOS 50D futhi 7d Into ephawuleka kakhulu ngesikhathi ISO 12800. Lapha, umsindo cishe isigamu. Ngisho ne-ISO 3200 waphawula izinga labo nokwehlisa 30%. Ngokuthakazelisayo, imingcele umsindo kwesiteshi ngalinye sekusondele, lubonise ukusatshalaliswa iyunifomu. Nakuba ephezulu ukuzwela isithombe EOS 7d has a ukuthungwa kungabukeki, bona seziyashelela ngaphandle 50D. Ozimele sihle e ezinombala ofanayo futhi halftones amnyama abanabuhlungu.

Kuyi-computer kakhulu ebucayi JPEG-zithombe egcwele imininingwane, kodwa kukhona abanye nezimagqabhagqabha umbala. Lena akuyona kufiseleka, kodwa abonakala kuphela ngaphansi kokukhulisa kuze kube usayizi A3. Image eyenziwe ISO 6400 nangaphezulu, ezahlukene pixelation okungahleliwe abomvu. Sekukonke EOS 7d ithumba eziningi ngokuningiliziwe. Ngisho ngesikhathi ISO 12800 ikhamera inikeza ukusebenza ezinengqondo.

uhla ashukumisayo

Esikhathini Ukulungiselelwa okuzenzakalelayo, Canon EOS 7d has a ashukumisayo ububanzi 12EV, okuhambelana okungcono SLR amakhamera ukukhululwa 2009 ikhamera has 2 ongakhetha ukuthuthukisa ke: ngosizo Auto Ukukhanyisa Optimizer nokukhanya ithoni kuqala. Umsuka iwenza ube lula umthunzi futhi ingasetshenziswa inhlukano ukuchayeka mode, kodwa ayikwazi ukusetshenziswa kanye kanye kwesibili. Ngakho-ke, ukuze kulondolozwe avelele imininingwane kangcono ukusebenzisa izilawuli ukuchayeka, bese - Ukukhanyisa Optimizer ukubonisa imininingwane izithunzi amafayela JPEG. Umphumelo ziphinde zisetshenziswe amafayela RAW- postprocessing isofthiwe efakwe Digital Photo Professional.

umbala bohlu

Lapho wabekela isitayela isithombe ngesikhala umbala i-Adobe RGB Canon 7d, ngokuvumelana Izibuyekezo nabanikazi, uyakwazi ekuthumbeni cishe lonke uhla ICC nge red smooth kakhulu, mauve kanye amathoni onsomi. Njengenjwayelo, Ukusabalala oluhlaza kancane esinqunyiwe, ngakho-ke akuyona ngokuphelele yonkhe isikhala-Adobe RGB.

LCD, kusitholi sokubonwayo isiqophi

Nakuba EOS 7d has a screen esinqunyiwe, Canon esibasize ngayo esobala LCD isibonisi elikuvumela ukuba abonise igridi esiyinhlanganisela, ezingeni electronic, kanye iphuzu futhi endaweni AF. Ezimweni eziningi, ifomu bushelelezi, ecacile futhi elikhanyayo, kodwa ngezinye izikhathi, ngokubona yabasebenzisi iphaneli ebonakalayo ukukhanya ukuthungwa izindawo usongene ithoni bushelelezi. Nakuba kusitholi sokubonwayo elikhanyayo ngokwanele ukunikeza manual ngokugxila, ezimweni eziningi kungcono usebenzise isithombe esikhulu esikrinini LCD. Kulula ukuba enembile, lapho endaweni edingekayo yesehlakalo luyanda.

Khombisa EOS 7d 3 amasentimitha idayagonali nekusombulula 920K. Amaphuzu (307 ayizinkulungwane. Amaphikseli). Ukuze wehlise ukucabangisisa ukukhanya, Canon isikrini igcwalisa igebe ngaphakathi kwalezi zinhlayiya kanye ingilazi yendwangu entsha ngendlela elukhuni 'azithathe optical Inkomba kabani yezokubona uyalingana ingilazi. Lokhu kwaba ukulungisiswa, ngoba isibonisi inikeza isithombe esicacile ngisho yesibani esizungezile elikhanyayo.

Isiqophi bangase alotshwe isinqumo 1920 × 1080 Amaphikseli (Full HD) ku-30, 25 noma 24 f / s, futhi 1280 x 720 noma 640 x 480 - 60 noma 50 f / s. Njenganoma imodi ekuskrini wokubuka ngesikhathi ukurekhoda ividiyo kungaba autofocus, kodwa ngokuvamile kungcono ukusebenzisa control manual, njengoba uhlelo uthambekela ukukhukhuleka off target.

Ngaphezu kwalokho, uma ukuqopha umsindo usebenzisa i-microphone monaural yangaphakathi (babe Jack i-microphone zangaphandle), ngokucindezela nokunyakaza isandla lincishisiwe kangcono. egcwele imininingwane eminingi, futhi abushelelezi ukunyakaza ngamazinga aphakeme isinqumo, futhi isiqophi lozimele.

isiphetho

AF uhlelo okusha EOS 7d sika umxhwele, futhi ukusetshenziswa walo omkhulu kudinga ukuqonda kahle isihloko kusukela iphuzu Ngenxa ikhamera, kanye ulwazi imisebenzi ezichazwe umsebenzisi etholakalayo. Loku kusikhumbuta uhlelo Canon AF ebangeni ephakeme Nikon. autofocus EOS 7d uhlelo kufanelana kahle nenye esiphezulu okuqhubekayo sokudubula ngesilinganiso 8 K / s, okwenza ikhamera i choice omuhle ezemidlalo sina abathanda kanye ochwepheshe abangekwazi ukukhokhela 1D Mark IV elibiza 4499 zamadola, noma labo akudingeki inzwa enkulu . Ngokusho impendulo yomsebenzisi, izithombe ikumodi ephezulu ijubane ukudubula okuqhubekayo ngezinye izikhathi uhlushwa ghosting, kodwa umakhi ukhiphe isibuyekezo firmware okwakufanele uphathe izintambo ukuqeda le ethile.

kubonakale onjiniyela Canon ukuba baye wakufeza lokho okwakulindelwe zabo, kakhulu ngcono EOS 7d kuqhathaniswa 50D. Okuphawulekayo anda ngokuningiliziwe isibhamu kanye umsindo kulo lonke uhla ukuzwela ilawulwa ngcono kakhulu, okwenza ikhamera ezihlukahlukene.