Thola ukudubula okuphelele ngalezi zingqimba eziphezulu ze-DSLR yakho
Kunezinhlobo eziningi kakhulu zama-lensi zamakhamera nezici okufanele uzicabangele, ngakho-ke udinga ngempela ukwenza ucwaningo lwakho ngaphambi kokungena ekuthengeni kwe-lens. Ukuze uqalise, kubalulekile ukuthola ukuthi yiziphi i-lens ezihambisanayo yiziphi amakhamera, kanye nokuthi yisiphi isitayela sokudubula esihle kumunye ngamunye.
Ngokujwayelekile, ukucaciswa okubaluleke kakhulu kwe-lens ukwazi ukuthi ubude obuseduze, obumele ngamamitha. Inombolo eyodwa (isb. 28 mm) ikhombisa ubude obugxile ekugxileni noma lens "prime", kanti ububanzi (isib. 70-300mm) lubonisa lens zoom. Ngombono wokuthi kusho ukuthini lokho, khumbula ukuthi iso lomuntu kuthiwa linenani elilinganayo elilinganiselwa ku-30-50 mm ekhamera egcwele ifreyimu.
Noma kunjalo, lokhu akuqali ngisho nokuthinta ezinhlobonhlobo nasezinkimbinkimbi zamalensi wekhamera yedijithali. Kodwa uma uzizwa ukwazi ngokwanele ukungena kuwo, nangu uhlu lwabaqalayo lwama-lens angcono kakhulu amakhamera we-DSLR.
Kubantu abafuna i-Canon prime lens engakwazi ukukhokhela, engcono kakhulu, ukubheja kwakho okungcono kakhulu ku-EF 50mm f / 1.8 STM ye Canon. Ihambisana nefreyimu egcwele kanye nama-APS-C DSLR amakhamera, futhi ihlanganisa ubude obugxile obuyi-50mm nokuvula okuphezulu f / 1.8. Iba nobude obunembile obuyi-80 mm kumakhamera we-APS-C no-50mm emakhamera agcwele. Ibuye ibe nemoto ehamba phambili ye-autofocus ebushelelezi, eyimfihlo yamanje noma ividiyo. Wonke lawa ma-specs enza kube ithuluzi elihle kunoma yikuphi okuvela kuma-portraits kuya ku-photography ebusuku, kodwa, njengoba sishilo esitendendeni, kungcono uma usuvele wazi ukuthi yisiphi isitayela sokudubula. Ama-lensi athile kakhulu, futhi lokhu lens prime kusuka ku-Canon akufani.
Uma ungumqhubi we-Nikon emakethe ye-lens eyinhloko efanayo kodwa engabizi, hlola i-Nikon AF-S FX NIKKOR 50mm f / 1.8G. Kunama-specs kanye nezici ezifanayo njenge-Canon EF 50mm f / 1.8 STM endaweni yamanani aphakeme kakhulu. Kungasetshenziselwa noma yikuphi kusuka kuma-portra kuya ukuthwebula izithombe-kufanele nje ube nekhamera ye-Nikon DSLR (okungcono imodeli ye-FX). Kuyashesha, kuyinkimbinkimbi futhi kuyindlela eqinile yabaqalayo kanye nabadwebi be-DSLR abaphakathi. Izithombe ziphuma zibukhali futhi ziningiliziwe, ngisho nokukhanya okuphansi, futhi ukwakha ngokwayo kuqinile ngezibonakaliso ezimbalwa zokuphulwa noma ukuguga. Khumbula, kodwa, ukuthi le lensi inebanga elincane lokugxila elingu-1.48 ft, okusho ukuthi awukwazi ukusondelana kakhulu nezihloko zakho. Ngalokho, uzodinga i-lens macro.
Ama-zoom lensimbi we-Macro aphakathi kwe-DSLR lense eningi kakhulu, enezinhlobo ezihlukahlukene ezizungeze 40-200mm. Ngama-70-300mm, le Tamron lens ilungele ukudutshulwa ngesandla, ikakhulukazi imvelo, izilwane zasendle, ezemidlalo nezithombe. Njenganoma iyiphi i-lens macro, izithombe zizobuya zibukhali futhi zigxile kakhulu-zigxile kakhulu , uma kukhona into enjalo. Izithombe ezincane, eziseduze zezinambuzane nezimbali nazo kungenzeka, nakuba, kuye ngokuthi ubukhulu besifundo, ungase ungakwazi ukuwuthatha yonke indawo ngaphakathi kokugxila. Izifundo ezikude kakhulu, noma kunjalo, zizogxila kakhulu futhi zilandelwe ngokucebile ngezinga lokusondeza. Esilungiselelweni esivamile, i-lens inebanga elincane lokugxila kwezingu-59 amasentimitha, kodwa ngemodi ye-macro yenza lolo banga luyehla ku-37.4 amasentimitha. Lokhu kwenza kube lens ehlukahlukeneyo ngezinhloso ezihlukahlukene. Ngezinguqulo ezitholakalayo eziningi ze-Nikon, i-Canon, i-Sony, i-Pentax ne-Konica Minolta DSLRs, le Tamron iyinhlangano enamandla kubathwebuli bezithombe kubhajethi.
Ukuthola i-zoom engcono kakhulu ye-zoom lens akulula. Kunezinketho eziningi kakhulu, kodwa ezimbalwa zihlangene kahle njenge-Sigma 24-105mm F4.0 DG OS HSM lense ye-Canon (i-Nikon ne-Sony variants iyatholakala). Ngokwezindleko zayo zokucela, uzothola inhlanganisela enkulu yesithombe somfanekiso ne-telephoto range ngokugcizelela ekugcineni izinga lokusondeza ngokuphezulu ngangokunokwenzeka ngaphandle kokudubula okuphambene.
Ibanga elincane lokugxila elingama-intshi angu-17 nesilinganiso esiphezulu se-1: 4: 6 yenza i-Sigma ibe ngcono ngokuvala nokuvala. Ukusondeza kwe-F4 2455mm kuza kugcwaliswe nge-Sigma Hyper Sonic Motor (HSM) eyenza i-autofocus esheshayo, ethule futhi enembile eceleni kwe-optical stabilization. Izinto zokwakha ezilula zinciphisa isisindo nobukhulu be-lens jikelele futhi, ku-1.95 amakhilogremu, kulula ukungena esikhwameni. Ngaphandle kokubanjwa kwesithombe, i-Sigma ingeze ukuhambisana kwe-USB, okuvumela i-lens ukuxhuma ngekhompyutha ukuze ivuselelwe i-firmware.
Ukuze uthole imali, i-EF-S 55-250mm ye-Canon F4-5.6 INGABE i-STM lens iyinani elingcono kakhulu le-dollar-for-dollar oyothola ku-lens telephoto. Njengoba ubude obugxile kakhulu nokuphakama okuphakathi kuka-55-250mm no-1: 4-5.6, i-Canon inhle kakhulu ekuvaleni eduze nokugxila kwezingu-2.8. Ngokuqiniswa kwesithombe esibukweni, i-Canon ingasiza ukukhokhela isandla semvelo eshaqhamuka kubasebenzisi bekhamera abanenkinga yokugcina isandla esinqinekile ngenkathi igxile.
Ukufakwa kwe-OIS kusiza ukufinyelela okuphelele kweCanon nokuthunjwa kwezinto ezikude lapho kugcinwe ngesandla sokuhamba ngezinyawo. I-lens ihlanganisa ubuchwepheshe be-Canon ye-Movie Servo AutoFocus, eqinisekisa ukulungiswa okuthulile ukuze usondeze ubude obungasaphazamisa noma yiziphi izifundo noma izwe elikuzungezile. Ukwengeza izihlungi zokwehlisa izinwele kuyisimo se-snap, ngenxa yengxenye yangaphambili ye-lens engahambisani. Ngamakhilogremu angu-1.2 kuphela, i-lens iyahlanganiswa ngokwanele ukuthi ingahlala esikhwameni sekhamera ngaphandle kokuthatha igumbi elikhulu kakhulu noma ukwengeza isisindo esiningi.
I-Sigma ithathwa kabanzi njengenye yezinto ezikhiqizayo lensimbi embonini, futhi empeleni ngumkhiqizi omkhulu we-lens ozimele emhlabeni jikelele. Zithembeke ukukhiqiza amalensi aqinile, athembekayo kwamakhamera ahlukahlukene kanye nezinhloso zokudubula, futhi le lens ephakeme kakhulu ye-angeli ayifani. Ngesilinganiso esiphezulu se-10-20mm kuphela, uyazi ukuthi kuzoletha ukujula okukhulu kwensimu, kusize ukuthatha zonke izakhiwo, amakamelo amakhulu nezinye izihloko ezinkulu. Ngokuyinhloko kuhloswe ukudubula izakhiwo, izihloko ezinzima-ezihlosiwe nezindlala. Inikeza ukugxila okusheshayo, izilungiselelo ezicacile, ukwakheka okuqinile nokukhiqiza umbala ogqamile nokuhle. Izinguquko zalesi lensi zingathinteka ku-Canon, Nikon, Pentax ne-Sony DSLR amakhamera.
Abanikazi be-Nikon kufanele babheke i-Tamron AF 70-300mm f / 4.0-5.6 lens ngoba yiyodwa yeTamron lens yokuqala ehlomele i-Ultrasonic Silent Drive (USD), eyenza ukugxila okugxilile. Lokho kusho ukuthi le lensi ilungele ukuthatha amahlumela esenzo phakathi nemikhakha, ezemidlalo noma ezinye izifundo ezihamba ngokushesha. I-Tamron iphinde inezele isinxephezelo sokududuza ukusiza abathwebuli bezithombe ngokushelela okunamandla ngesimo esithathwe ngesandla kungakhathaliseki ukuthi isimo singaphandle.
Ukuhlanganisa ukugxila kwesikhombisa esigcwele isikhathi esinye kuqokomisa, okuvumela umthwebuli wezithombe ukuthi enze izinguquko okwamanje ngaphandle kwesidingo sokushintsha noma amamenyu. Lokhu kuhlanganiswa kwezincwadi kusuka eTamron kuvumela imiphumela ehlaba umxhwele ngisho nangaphansi kwezimo lapho ukujula kwensimu ye-photographer kunqunyelwe khona. Ukuqhathanisa ukuphambana okukhulu kunamanye ama-lens ekilasini lakhe, i-Tamron yenzelwe ukugxila ekusebenzeni okuhle kakhulu futhi ihambise okuhlangenwe nakho okungenakuqhathaniswa nakho konke ngenkathi ikhula ngokushukumisa ama-shots action action.
Enye yama-ultrasense esheshayo nebukhali kunazo zonke atholakalayo, i-Tokina 11-16mm f / 2.8 AT-X116 yi-must-buy ye-Canon ikhamera abanikazi. Ngaphandle kwe-bat, uzobona ukuthi kunesidingo sokuqiniswa kwesithombe esakhelwe ngaphakathi, kodwa kunesimo esingavamile sezimo lapho uzolahlekelwa khona lesi sici sinikezwe ukuvala f / 2.8 nobude obude be-Tokina. Ngenhlanhla, yilapho ukuphazamiseka kuphela khona. I-Tokina iyi-lens enkulu kakhulu-engxenyeni ebanzi kakhulu eyenza kahle kakhulu ekukhanyeni okuphansi, ngenxa yokuvula okuphezulu okunciphisa ukuqhuma, ikakhulukazi ngokukhanyisa okuqinile.
Ukukhethwa kuka-Tokina kwe-11-16mm akushiyi ukusondeza okunengi ukusebenza, kepha kunokwanela okwanele ukwengeza ukusondeza okwanele ukugxila emaphethelweni ohlaka ngenkathi kugcizelela isihloko sendawo. Ukulinganisa amakhilogremu angu-1.2 nje kuphela, i-Tokina yileli lensi elincane eliphelele ekuhambeni okuhambayo noma ehlangene ngokwanele ukuthwala indawo edolobheni.