Amalensi "Sigma" wezithombe-abaculi: izici nokubuyekezwa kwamakhasimende

"Sigma" ngumkhiqizi we-lens waseJapane. Intengo kanye nekhwalithi yemikhiqizo yayo njalo ihlala ezingeni eliphezulu. Ngandlela-thile, i-"Sigma" lens ngezinye izikhathi ingcono kunama-lens omdabu wekhamera ye-SLR. Ngimaphi amakhamera kungcono ukuthatha imikhiqizo enjalo?

Amalensi we-DSLRs athandwayo

Akuwona wonke amakhamera edijithali "Sigma" akhiqiza amalensi, kodwa kuphela ethandwa kakhulu, noma kunalokho, "abantu bakubo". Kunezintathu kuphela zazo:

• "Canon".
• "Nikon".
• "Sonya".

Kukhona ama-lens okudayiswa kwamanye amakhamera wezinye izimpahla, kodwa lokhu kuyi-rarity enkulu kakhulu. Kungani kukhona izesekeli zabakhiqizi bezinkampani zangaphandle, uma zikhona izinkampani zabo ezibalwe ngenhla?

I-Sigma "lens" ye-Nikon "," i-Canon "ne" Sony "ayikho ngenxa yokuncintisana, kodwa ngenxa yokungezelela noma ukufaka esikhundleni. Akwanele, ngoba ngezinye izikhathi kwenzeka ukuthi kuma-lens angokwemvelo angenalo izici ezidingekayo ngumthwebuli wezithombe, noma akanelisekile ngentengo, umphumela wokudubula. Futhi ukuthenga umkhiqizo ofanele, udinga ukutadisha ngokugcwele ulwazi, bheka izibuyekezo, funda izibuyekezo futhi, nakanjani, ubone izithombe ezenziwe ngosizo lwesenzakalo esithakazelisayo.

Ngokuba "Nikon" lens kusuka "Sigma"

Ama-mirror amakhamera avela ku-Nikon anezinhlobonhlobo zawo eziningi zamalensi. Isiqiniseko "Sigma" asizange sinqabe imishini yokunakwa futhi inikeza ithuba lokukhetha phakathi kokukhiqizwa okudingekayo.

Amalensi afika ngezindlela ezahlukene:

• I-Wide-angle;
• I-telephoto lens;
• I-Portrait;
• IFisheye;
• Standard.

Singasho ukuthi i-Sigma lens, ikakhulukazi i-lens telefhoto, ibhekwa njengento eyimangalisa kakhulu. Kungani? Akuwona wonke umenzi owenza i-telephoto lens ngobude obukhulu buka-800 mm ngentengo eyanele. Uma umthwebuli wezithombe efuna ukudubula izindiza ezihamba ezindizeni ezingamamitha angu-3000 ngaphezu komhlaba, noma ukulungisa ama- craters Ngenyanga, uzokhetha i-lens ngamalensi aqinile kakhulu.

Ngokuqondene nezinye izinhlobo zamalensi, isibonelo, "i-fisheye" ungakhetha kokubili isizukulwane ne "Sigma". Ngamanani angahluka, enezici ezifanayo.

Kumele kuqashelwe ukuthi ngoba "i-Nikon" lens ikhiqizwa i-lens non-full frame kanye ne-frame frame. Kubalulekile ukunikeza ukunakwa okukhethekile kulokhu.

Futhi zeKhanon amakhamera kukhona izesekeli

I-SLRs ye-Canon, ibuye ibe nokukhethwa okukhulu kwezinhlobo ezahlukene zama- lens . Ukuze uhlele okufana nesigaba sangaphambilini, akukho mqondo. Omunye angakhuluma kuphela ngokufaneleka kwama-Sigma lens for Canon. Ngokuvamile ungahlangabezana nezikhalazo zomsebenzisi mayelana nezesekeli ezivela kumkhiqizi wendabuko. I-Cameras Canon, ngokungafani ne-Nikon, ayinaso ukuzinza, ngakho-ke abanikazi kufanele bathenge amalensi nge-USM-motor, noma, njengoba kuthiwa abasebenzisi banamuhla, i-stub. Ngokwemvelo, ngentengo le divayisi iyobiza kakhulu. Kodwa lesi siphoso sihlawulelwa izinga lokudubula.

Isibonelo, i-lens "Sigma" ye-Canon 10-20 mm ine-apertures ehlukene. Ngakho-ke, i-photographer ingenza ukhetho, kodwa kuzoba khona amanani nekhwalithi ehlukile. Vumelana ukuthi i-lens ene-f / 3.5 f / 3.5 ikuvumela ukuba uthathe izithombe eziphakeme kakhulu ngaphansi kokukhanyisa okuvamile, futhi ngep / parameter f / 4-5.6 kuzodingeka usebenzise ukukhanyisa okwengeziwe noma ukudubula esimweni esihle sezulu.

Amalensi amabili 18-250 mm we "Nikon"

Ubani ofuna ukhetho lwesabelomali kanye nedivayisi yazo zonke izimo zokuphila, njengoba zisho, kunconywa ukuthenga eyodwa yonke. Leli lensi "Sigma 18-250" ye "Nikon". Uma uthengiswa, ungathola izinguqulo ezimbili zamalayi: 18-250 f / 3.5-6.3 Macro no 18-250 f / 3.5-6.3

Ekuboneni kokuqala azifani. Eqinisweni, ngenjongo yokuklama nenjongo, lawa malensi abe nomthelela omkhulu. Qaphela ukuthi owokuqala uthi "Macro". Lokhu kungukuthi, ungakwazi ukufeza ukudubula okukhulu kusuka ebangeni elincane lika-35 cm. Owesibili unalesi parameter - 45 cm, okungukuthi, into encane ngeke isebenze njengoba ifunwa. Uma usondela eduze, i-autofocus ngeke ilungise into, isithombe sizovela ngokufiphala.

Kukhona ukungezwani kokungenani okuncane nokubukeka okuphezulu. Amagugu amakhulu ku-lens evumelekile imodi ye-macro. Kuyinto efiselekayo ukulalela esinye isici: ama-diameter emicu yokuhlunga ukukhanya. I-lens yokuqala ine-62 mm, i-lens yesibili ine-72 mm. Ubukhulu nesisindo, ngokungavamile, i-lens enekhono lokuthi "macro" lingaphansi.

Singasho ngokushesha ukuthi 18-250 mm f / 3.5-6.3 Macro ingcono kakhulu, kodwa intengo yayo iphakeme ngamabhule ayizinkulungwane ezingu-5-10.

Mayelana nama-lens 18-250 mm we "Canon"

Ngaphezulu, izici zamalensi afanayo ze-SLR amakhamera Nikon zaxoxwa ngazo. Kukhona umehluko owodwa kuphela omkhulu: imodeli eyodwa kuphela nemodi ye-"macro" ehlala isetshenziselwa ukudayiswa. Ukuze ungabhalisi izici ezifanayo (zifana ngokufanayo), kungcono ukukhuluma ngempendulo. I-lens "Sigma 18-250" ye-Canon akuyona nje i-lens jikelele. Zingasetshenziswa kokubili ekuhambeni noma ezinkomfeni, nasekuzingeleni izithombe (izithombe ezithinta noma ezihambayo kude).

Enye yezinkinga, ngokusho kwabanikazi: ukwehluleka ukudubula endaweni engaphezu kuka-150 mm noma nge-ISO value ye-100. Ekugcineni, inkinga ixazululwa ngokubeka ngesandla nangokufaka i-ISO 200 nangaphezulu. Kumele kucatshangelwe ukuthi ngalesi parameter kungcono ukuthi ungadluli, ngoba izomsindo zizovela kuhlaka.

Njengazo zonke i-Sigma lens ye-Canon, le modeli ingenye yezinto ezihamba kahle phakathi kwama-lens zabanye abakhiqizi bezithathu. Awekho amamodeli angaphelele awakhona. Konke kuncike kubathwebuli bezithombe, ngokwazi ukusebenzisa ikhamera yesibuko.

I-Lens ye-Nikon kamera 24-70 mm

Yini futhi kungani i-lens "Sigma 24-70" ye "Nikon" idinga? Lona idivayisi ephethe ubude obuningi bohlobo "oluguquguqukayo". Igama eliphelele le-model limi kanje: Sigma 24-70mm F / 2.8. Ibhekisela kuma-lensi wokusondeza ajwayelekile. Kufanele ngokushesha ixwayiswe ukuthi lokhu kuyinto enzima - i-790 g. Ububanzi bayo nobude bayoba yi-88.6 no-94.7 mm ngokulandelana. Ubuningi bomucu we-lemifanekiso ngu-82 mm.

Manje ake sivule iveli. Ake sibone ukuthi abasebenzisi babhala ngani ngalezi zimpawu ze-Sigma ze-Nikon. Ukubuyekezwa kwahlukahluka, kodwa ikakhulukazi kuhle. Ukuze ungadideli labo abanentshisekelo, kungcono ukuqala ngezixwayiso. Njengoba kushiwo esigabeni esandulele, ububanzi bezintambo ngaphansi kwesihlungi sokukhanya ngu 82 mm. Ngeshwa, inani lemifanekiso yokukhanya likhulu, likhulu ubukhulu. Lapha, umsebenzisi ukhokha inani lempahla esetshenzisiwe, hhayi nje ngekhwalithi nekhwalithi. Kufanele ulungele ukukhokha ngaphezulu. Futhi inkinga eyodwa, kodwa, ayitholakali kuyo yonke imikhiqizo: okunamathiselwe okungahambi kahle kwekhanda le-lens, ubukhali bezithombe buyehla kakhulu emaphethelweni, ukugxila kugwa njalo.

Futhi manje ake sikhulume ngezinhlangothi ezinhle - lena izinga eliphezulu lesithombe. Ukukhanya kuhle kakhulu (hhayi ukubala emaphethelweni), uma isithombe sithathwa. Emvelweni, imihlaba ingadutshulwa ngokuphelele, kodwa udinga ukunaka emaphethelweni kwakuyizici ezingabalulekile kakhulu. Ukuvulwa kwe-lens kuhle, ungakwazi ukudubula ngisho nesimo sezulu esibhakabhaka ngaphandle kokulimala. Labo abakwazi ukuphatha i-phototechnics, lungisa ushintsho, bazojabulela ukushesha kwe-autofocus.

Le lensi ingasetshenziselwa izinhloso ezehlukene, izobeka ngokugcwele inombolo ye-portrait, ebanzi-angle, yokusondeza.

Amalensi ama-wide angle

Lesi sigaba sibonisa amanye ama-lens angama-angle angama-Sigma. Kunengqondo ukuqala nge-Sigma AF lens 8-16 mm F / 4.5-5.6 ye-Canon ne-Nikon. Kungani ngalokhu? Ngoba igama le-lens enkulu-angle liye ngqo ngenxa yekhono lokubamba ulwazi oluseduze lwendawo. Ungahambi kude, ukuze lonke iklasi noma abantu ababalelwa ku-50 bangene kuhlaka. Amancane ubude obugxile, ngcono. Mayelana naye ungahlangabezana nezibuyekezo ezinhle kakhulu. Ngeshwa, amakhamera amaningi angewona aqeqeshiwe futhi asemqoka asebenza nge-SLR ane-matrix ene-crocheting elingana no-1.5 noma engu-1.6. Lokhu kusho ukuthi ngenxa yalokho, ubude obugxile buyanda izikhathi ezingu-1.5-1.6. Futhi le lens iyinjabulo yangempela kubalandeli be-angle ekulu. Emva kwakho konke, ungenza isithombe esihle kakhulu, sibe nobude obude buka 12-12.8 mm. Ziyini lezi zinombolo? Lona ubude obuncane (8) obwandiswa yi-croping factor (1.5-1.6). Ngokwemvelo, ukuba nezici ezinjalo kungenzeka ukuba izithombe zithande amahle. Kodwa kunesimo esisodwa. Qaphela ukuthi amandla okukhanya avela f = 1 / 4.5 kuya f = 1 / 5.6. Lokhu kusho ukuthi kungcono ukudubula ekamelweni elikhanyayo noma emgwaqweni esimweni esihle sezulu. Uma kungenjalo, ifreyimu izoba mnyama.

Ake sihlele amanye ama-lens amaningi-angle "Sigma" we- "Nikon" ne "Canon".

Sigma AF 10-20 mm F1 / 3.5 . Esikhathini kukhona inhlawulo kanye ne-lens hood, okungeyona into njalo. Lona ubuhle obulodwa. Enye ingukukhanya okuqhubekayo. Vumela u-1 / 3.5, kodwa wamukelekile ukudubula kwangaphakathi. Kukhona ukungalungi kuphela ngentengo ye-lens ngokwayo kanye nezihlungi zokukhanya. Kusukela ububanzi buka-82 mm.

Sigma AF 12-24 mm F / 4.5-5.6 . I-lens stabilizer ayinayo i-lens. Ukubuyekezwa komsebenzisi kunjengokulandelayo: Kumele uqaphele ukuthi ungatholi umswakama kudivayisi. Ukuvulwa kubuthakathaka, ngakho ukudubula ngaphakathi endlini kungakucasula. I-plus kuphela iyona engxenyeni ebanzi. Ungangezela ukuthi ngezinye izikhathi i-lens-wide angle ibeka esikhundleni se "fisheye", noma kunjalo, ngeke kube khona inkundla.

Ama-lens angama-angle ama-Sigma we-Canon no-Nikon ngobude obuningi bohlobo oluqhubekayo luyi-f / 1.8 no-f / 1.4: 20 mm, 24 mm, 28 mm, 30 mm, 35 mm. Ama-lens anemingcele enjalo anemibiko emihle evela kubanikazi. Ukucaca, ukucaca, ukubhuka, ukudubula kunoma yiziphi izimo ku-"hurray", isinxephezelo se-matrix ngesici se-Croping.

Amalensi we-Sony amakhamera

Ngeshwa, ama-Sony amakhamera okwamanje eRussia kunamamodeli ambalwa kuphela. Amalensi "Sigma" we "Sony" okudayiswayo, isibonelo, nemingcele ebalulekile:

• 60 mm f / 2.8.
• 30 mm f / 2.8.
• I-19 mm f / 2.8.

Naphezu kokukhetha okuncane, ngifuna ukujabulisa abanikazi bekhamera ye-Sony SLR. Unemiberrations ye-chromatic, eyenza izithombe eziphezulu zekhwalithi. Ngokucacile, njengabanye abasebenzisi abhalayo, bahlambalaza. Ukuvulwa kuhle kakhulu.

"I-Sigma" lensimbi ye-Sony amakhamera ayithengi kakhulu, ngokungafani nomdabu kanye nabanye abakhiqizi. Intengo ephezulu yi-ruble ayizinkulungwane ezingu-15. Kodwa konke kuxhomeke esitolo.

Namuhla ungathola impendulo emihle mayelana nalezi lensi. Manje ake sikhulume ngokuthi yikuphi okukwenziwe ngenhla.

60 mm. Ngesizathu esithile, ezinye izitolo ze-intanethi ziyibiza ngokuthi i-telephoto lens, nakuba lokhu akulona iqiniso. Kuyinto efaneleka kakhulu ukudweba izithombe, nakuba izifundo ezide kakhulu zingazitholwa ngaphandle kokuyekethisa ikhwalithi nokuchayeka.

30 mm. I-lens ejwayelekile. Ngiyisebenzisa kokubili njenge-portraitist futhi njenge-angle-wide one.

19 mm. I-lens-angle lens. Kuzokuvumela ukuba uthathe i-panorama, iqoqo, indawo yokuma.

Amalensi afakwe ohlwini olugxile "uhlobo oluhlala njalo," oluzoba okungavamile futhi olungathandeki kulabo asetshenziselwa ukusondeza. Kodwa-ke kusukela kwenkampani "Sigma" kubanikazi bamakhamera "Sony" - kuyaduduza, ngoba izinga kanye namanani kuyajabulisa.

Impendulo yomnikazi

Iningi lezibuyekezo zabanini bomklamo we-Nikon ne-Canon zingaphezu kokuhle. Kungani? Ngoba "Sigma" yenza konke onembeza. Umkhiqizi ucabangela ukuthi akuzona nje amateurs abazosebenzisa amalensi, kodwa futhi abaqeqeshiwe.

Ngakho yiziphi ngempela "i-Sigma" lens? Ake sinikeze izibonelo ezithile. Into yokuqala ukuthi abanikazi abajabulayo babhale ngezici: ubukhali. Kubalulekile eqinisweni ukuthi isithombe sasicacile.

Emalensi amaningi kukhona ukuvula okuhle. Abasebenzisi badumisa izinga lokudubula kuzo zonke izimo zezulu ngisho nasendlini. Wonke ochwepheshe uyazi ukuthi kubaluleke kangakanani ukwenza isithombe sibe mnandi kuwo wonke umqondo.

I-Bokeh - yilokho okuheha kakhulu ezithombeni. Futhi yikuphi lokhu? Iphutha langemuva. Lokhu kubalulekile kunoma iyiphi i-photographer ye-amateur, futhi ngisho nangaphezulu kakhulu kochwepheshe futhi ikakhulukazi ama-portraits. Abasebenzisi be-"Sigma" lens bachaza zonke izinzuzo ngokusho kwe-bokeh. Isithombe siyathandeka kakhulu. Ubheka i-portrait futhi ungaboni ubuso bomuntu obonisiwe, kepha futhi nesizinda esicacile kahle esibukeka ubuhle besimodeli.

I-motor yamalensi anjalo ayicacile, okusiza ukuthatha izithombe ngisho nalapho kudingeka khona ukuthula.

Kufanele ngikhethe phakathi kwamanye abakhiqizi?

Khetha ukuthi i-lenses yabanye abakhiqizi, ngayinye inganquma ngokwabo. Kodwa ukhetho, eqinisweni, luyingcosana. Abakhiqizi abaningi abenzi izinhlobo ezahlukene zezesekeli. Iningi, ngeshwa, lenza imodeli eyodwa kuphela kokubili "Nikon" ne "Canon". Omunye anganika kuphela uhlu lwalabo abenza amalensi amamodeli ahlukene:

• Zeiss.
• UThamron.
• "Zenith".
• I-Tokina.
• Samyang.

"Zenith" - lo ngumkhiqizi wezakhiwo ezifuywayo. Akasebenzisi ukuthambekela nokuthembela okukhethekile. Okwamanje, ungathola ukubuyekezwa okungavamile mayelana nemikhiqizo yayo. Njengomthetho, abathwebuli bezithombe bazama ukukhetha onobuhle bezinye izinkampani, kuhlanganise nezihlobo zabo.

Amalensi "Sigma", "Temron", "Samyang" kuthathwa njengothandwa kakhulu. Lokhu okuyingqayizivele kuyingqayizivele, ngoba cishe wonke amangqamuzana alo - enokugxila komhlobo "ohleliwe". Nokho, kunezibonelo ezimbili eziguquguqukayo.

Ekhuluma nge- "TEMRON", kufanele kuthiwa masinyane ukuthi la ma-lens ahle, kodwa anesici esisodwa: ubukhali babo abukwane ngokwanele. Akuthinti izithombe, noma kunjalo. Ungathola izithombe ezinhle ezithathwe kuzo zonke izimo zezulu. Kunenqwaba yezinhlobo zebhajethi.