Thatha amakhono akho wezithombe ukuya ezingeni elilandelayo
Uma kuziwa kuma-lens angama-wide, ucingo olubaluleke kunawo wonke okufanele lubuke lubude obugxile, obuvezwe ngamagremu. Ama-angles amaningi kakhulu ahlongozwa ngokuthi abe nobude obugxile ngamamitha angu-35 noma ngaphansi, futhi kungenzeka kube yi-prime noma i-zoom lens. Kodwa ngaphambi kokuba unciphise ubude obugxile obufunayo, udinga ukuqinisekisa ukuthi ngempela ihambelana nekhamera yakho, okungenzeka noma engahambisani nanoma iyiphi i-lens enikeziwe. Uma usuke udwebe lokho kude, ungaqala ukugxila ezintweni ezengeziwe, njenge-prime noma zoom, uhlobo lwe-autofocus nohlelo lokuvula. Ngezansi, senze uhlu lwamanye ama- lens angaphezulu kakhulu we-Canon , i-Nikon namanye amakhamera.
Inhlanganisela yemilingo yokusebenza okuhle kakhulu nokukhanya okuphansi, i-Canon EF 16-35mm f / 4L I-USM lens iyisinqumo esihle kwabanikazi be-Canon DSLR. Ukuhlanganisa ukukhanya kwe-Optical Image, ukugqoka okukhethekile ukunciphisa ukuqhuma kanye nezinsimbi ezimbili ze-UD ukunciphisa ukufiphaza kwesithombe, i-Canon ingeza ukugxila kwangaphakathi futhi ilandele i-USM ngokugxila ngokuqondile nokushesha kwe-auto. Ukugxila kwesikhashana sesikhathi esigcwele kuyatholakala nangendlela encane yokugxila engamamitha angu-0.92 kuwo wonke uhlu lokusondeza lensi.
Eyakhelwe kuzo zonke izimo zezulu, le lensi ye-Canon yilezi zibili uthuli nokumelana namanzi, okwenza kube lula kuzo zonke izimo zomsebenzi nezomthengi njalo. Ngaphandle kokuvikelwa ezikhathini, ukuvulwa kwendilinga ye-Canon lens kanye nezinsimbi zalo eziyisishiyagalolunye kuvumela isithombe esihle, esincane sesithombe sangemuva.
Ukubuyekezwa kudumisa ukusebenza kwayo nemiphumela yesithombe ngisho nangaphansi kokukhanya kakhulu nemibandela yesithombe. Ngamakhilogremu angu-1.4 nje kuphela, i-Canon EF 16-35mm lense izoba ngokushesha i-Canon DSLR abanikazi abafuna ukuzitholela izithombe ezinhle kakhulu.
I-go-to choice kwabaningi abanikazi be-Canon DSLR, i-EF S 10-22m f / 3.5-4.5 inezinhlanganisela zekhwalithi yesithombe kanye nokukwazi ukukwazi ukukwazi ukukwenza ukuthi kube yisinqumo esibucayi se-lens yansuku zonke. Ukufaka i-stabilizer yesithombe sokukhanya, i-autofocus ephezulu kanye nokugxila kwesikhashana esigcwele ngendandatho yokwengeza kwendandatho engeza uphethiloli emlilweni le-Canon lens.
Njengoba ibanga elincane lama-intshi angu-9.5 ukugxila ngokujulile, izihloko ezincane njenge 3.6 x 5.4 amasentimitha zingagcwalisa ifreyimu. Ubukhulu obunamathekisthi bunalo lensi enesisindo esingamakhilogremu angu-0.85, okwenza kube ngaphezu kokukhanya okwanele ukuthwala eduze esikhwameni. Ama-wide angles avela ekujuleni kwalolu lens kufanele afakaze ngisho nabathwebuli bezithombe abanobuchwepheshe ngokulingana nesondlo se-16-35mm. Izakhi ezintathu ze-aspherical lens, i-Super-UD element kanye ne-ring-type USM yonke usizo ukuqinisekisa ikhwalithi yesithombe esibucayi.
Ngenkathi kungekho ukuqiniswa kwesithombe esakhiwe ngaphakathi, ukwakha okulula kuyasiza ukugcina le lensi igxilile esandleni sakho njengoba ubamba izibhamu zomshado, umcimbi wezemidlalo noma isithombe se-landscape epaki kazwelonke.
I-lens enhle kunzima ukuyithola engabizi, futhi uma uthola ukuthola, ufuna ukuqinisekisa ukuthi awutshalanga imali into ezayo ezinyangeni ezimbalwa nje. Yingakho, lapho ukhuluma nge "isabelomali" lens, ukhuluma ngempela mayelana nohla lwamanani cishe $ 150 kuya $ 200. Phakathi kwale lensi, i-Nikon AF-S DX NIKKOR 35mm f / 1.8G lense cishe iyona engcono kakhulu yebhajethi ye-angle-angle angle ongayithola kumakhamera we-Nikon. It has ubude obujwayelekile-angle angle focal 35mm, okuyinto ngokufanayo kufana neso lomuntu. Lokho kusho ukuthi izithombe zizoveza ngokusondelene nalokho owacabanga-okungukuthi, uma wazi ukuthi wenzani. Leli lens prime libuye libe nokuvuleka okuphezulu kwe f / 1.8 futhi ubuncane bef / 22. Kukhona i-ultrasonic autofocus (AF) motor ene-full time manual egxile kuyo. Futhi yonke into ingatholakala nje ngaphansi kwe $ 200.
Ukusebenza okungcono kakhulu kwe-angle wide okutholakala namhlanje, i-Sigma 8-16mm f / 4.5-5.6 DC HSM FLD AF iyinhlangano ekhethiwe ye-Canon, Nikon, iPentax kanye ne-Sony DSLR. I-lens eyodwa-of-a-kind, i-Sigma yowokuqala ukunikeza ubude obuncane be-8mm kuphela. Yakhiwe ngama-image wesithombe se-APS-C engqondweni, i-lens inikeza insimu efanayo yokubuka kuma-lens 12-24mm.
Ukuhlanganisa izakhi ze-glass ze-FLD ezintsha ze-FLD, i-lens isiza ukukhokhela ukulungiswa kombala nokulungiswa kombala ngenkathi ikhiqiza imiphumela emihle kakhulu yesithombe kuyo yonke indawo yayo yokusondeza. Ukufakwa kwetheksthi ye-HSM kuvumela ukuthi ukusondeza kwe-autofocus kube kokubili okuyimishini futhi okubhaliwe okungenani ibanga lokugxila elingamaphesenti angu-9,4 ukusuka kusihloko.
Ekugcineni, i-Sigma ikhiqize i-lens ehamba phambili ekudutsheni kwezwe, ekutholeni izakhiwo, ezakhiweni zangaphakathi, photojournalism, izithombe zokushada nokunye okuningi. I-1.22-pound isisindo kanye no-4.17 amasentimitha ubude yenza kube yinkimbinkimbi futhi iphathekayo, ngakho kufanelana ngokuphelele esikhwameni sokulala, esikhwameni noma esikhwameni esinikezelwe ikhamera.
Uma ufuna ukwazi ukuthatha ubukhulu obunamandla be-Grand Canyon noma enye i-vista ephawulekayo, mhlawumbe ufuna i-lens ebanzi-angle, evame ukuchazwa njengeliphi lens elinemigqa elifushane elide elingaphezu kuka-15 mm. Ku-Nikon abadubulayo, kukhona i-Sigma 10-20mm f / 3.5 EX DC HSM. Ukuvulwa okuhleliwe kanye nebala eliphakeme elifushane elimfushane kwenza kube kuhle kumathafa kanye nezakhiwo, kodwa kungase kube kuhle kakhulu kochwepheshe abadubula izithombe. It has a hyper-sonic motor for autofocus esithule futhi super okusheshayo, kanye hood-hlobo hood evala ukukhanya okungeziwe futhi unciphisa ukucabanga kwangaphakathi. Kuyi-lens enkulu ye-angle ephakathi kakhulu, kodwa i-tech ngemuva kwale madivaysi amancane izokujabulisa ngisho nabathwebuli bezithombe abanobuhle kakhulu. Kukhona nezitayela ze-Canon, i-Pentax ne-Sony DSLRs. Kungase kungabi yi-go-to, okuhle kwenhloso yonke, kepha ngokuqinisekile kuyisiphumo esihle seqoqo elikhulayo lamalensi.
Okunye okukhethwa kukho kwesabelomali kubaculi be-Canon, i-EF-S 24mm f / 2.8 STM ihambisana kahle nesigaba esikhulu. Ibude obude obuyi-24 mm kanye nokuvula okuphezulu kwe f / 2.8. Empeleni i-lens encane kakhulu futhi elula kunazo zonke ezingxenyeni ze-EF-S zama-Canon lens. Ibuye igxile ekugxilweni kwesikhathi esigcwele ngesikhathi se-One Shot AF (autofocus) imodi. Iveza izithombe ze-stellar nge-autofocus esheshayo, futhi encane ngokwanele ukulingana kunoma yisiphi isikhwama kit. Intengo injalo ukuthi akudingeki ukhathazeke kakhulu ngokuzisola ngokuthenga, ikakhulukazi uma ungumthwebuli wezithombe osebenzayo ophethe iqoqo lens. Cabanga ngalokhu ukhetho oluqinile uma ungumqhubi weCanon ufuna ukuthenga lens yakho yokuqala yokuqala-angle, kodwa awufuni ukuchitha imali eningi.
I-Sigma ithuthukise ukukhishwa kwayo kwe-Mark II premium-angle-angle eyayivele igubha nge-Art edition entsha. I-lens yemidlalo ephansi yokusabalalisa ingilazi ene-multilayer yembatho eyanciphisa ukuhlanekezela futhi iveza okuningi ngokuphambene. I-lens nayo ihlale ihlala isikhathi eside, enezingubo zokuphefumula nezici zangaphambili nangemuva kanye nesimo sezulu esivimbelwe ngesimo sezulu.
Okunye ukuthuthukiswa okukhulu kuguqula ukuvula kusuka ku-af / 4-5.6 ukulinganisa okuguquguqukayo kuya ku-f / 4 ehlala njalo, okuyinto, kanye ne-optical path optical, eyenza ama-shooting landscape amahle. Njengoba ivulekile f / 4 kulo lonke uhlangothi lokusondeza, liyi-stop egcwele ecacile kunalokhu ngaphambi kokunikeza abathwebuli bezithombe ngesivinini esisheshayo se-shutter esilungele imvelo nemifanekiso yedolobha. I-lens inokuphakama okungu-4.9x, ne-Hyper-Sonic Motor ubuchwepheshe obuvumela ukuzithuthukisa futhi okusheshayo i-autofocus ngisho nalapho kuthatha izithombe kude.