1,Yibuphi ubude bokugxila obuvame ukusetshenziswa bamalensi ezimboni?
Kunobude obuningi bokugxila obusetshenziswa kuamalensi ezimboni. Ngokuvamile, izigaba ezihlukene zobude obugxilile zikhethwa ngokuya ngezidingo zokudubula. Nazi izibonelo ezivamile zobude bokugxila:
A.4mm ubude bokugxila
Amalensi alobu bude bokugxila afaneleka kakhulu ukudubula izindawo ezinkulu namabanga aseduze, njengezindawo zokusebenzela zasefekthri, izindawo zokugcina, njll.
B.6mm ubude bokugxila
Uma kuqhathaniswa nelensi yobude bokugxila engu-4mm, lena ilensi yobude bokugxila ende, ifanele izikhathi ezinkulu kancane. Imishini eminingi yezimboni emikhulu, njengamathuluzi emishini esindayo, imigqa emikhulu yokukhiqiza, njll., ingasebenzisa ilensi engu-6mm.
C.8mm ubude bokugxila
Ilensi engu-8mm ingathwebula izigcawu ezinkudlwana, njengolayini wokukhiqiza omkhulu, indawo yokugcina impahla, njll. Kufanele kuqashelwe ukuthi ilensi yalobu bude bokugxila ingase ibangele ukuhlanekezelwa kwesithombe ezigcawini ezinkulu.
Ilensi yezimboni ukudubula izigcawu ezinkulu
D.12mm ubude bokugxila
Uma kuqhathaniswa nelensi yobude bokugxila engu-8mm, ilensi engu-12mm inebanga lokudubula elibanzi futhi ifaneleka kakhulu ukusetshenziswa ezigcawini ezinkulu.
E.16mm ubude bokugxila
Ilensi yobude bokugxila engu-16mm iyilensi yobude obugxilile obumaphakathi, elungele ukudutshulwa ebangeni elimaphakathi. Ingasetshenziselwa ukudubula izingxenye ezithile zemboni, njengemishini, izinto zokusebenza, njll.
F.25mm ubude bokugxila
Ilensi engu-25mm iyilensi ye-telephoto uma kuqhathaniswa, efaneleka kakhulu ukuthwebula amabanga amade, njengokudubula umbono we-panoramic wefekthri yonke usuka endaweni ephezulu.
G.35mm, 50mm, 75mm nobunye ubude obugxile
Amalensi afana no-35mm, 50mm, kanye no-75mm amalensi amade agxile angasetshenziswa ukuthwebula izindawo zezimboni ezikude, noma ukuthwebula izithombe okukhulu (ibanga eliseduze kakhulu) ukuze kuthwebule imininingwane eyengeziwe esithombeni.
2,Yiziphi izici okufanele zicatshangelwe lapho kukhethwa amalensi ezimboni?
Lapho ukhetha iilensi yezimboni, izici ezilandelayo zidinga ukucatshangelwa:
A.Izidingo zohlelo lokusebenza
Ngaphambi kokukhetha ilensi, thola ukuthi yiluphi uhlobo lwamalensi uhlelo lwakho lokusebenza oludingayo. Ngoba izinhlelo zokusebenza ezihlukene zidinga izinhlobo ezahlukene zamapharamitha njengendawo yokuvula, ubude bendawo kanye nenkundla yokubuka.
Isibonelo, ingabe udinga ilensi ye-engeli ebanzi noma ilensi ye-telephoto? Udinga ukugxila okugxilile noma amandla okusondeza? Lokhu kunqunywa ngokusekelwe ezidingweni zesicelo.
Khetha amalensi ezimboni ngokusekelwe ezidingweni zohlelo lokusebenza
B.Imingcele ye-Optical
Imbobo, ubude bendawo kanye nenkundla yokubuka konke kuyimingcele ebalulekile yelensi. Imbobo inquma inani lokukhanya elidluliswa ilensi, futhi indawo enkulu yokuvula ingafinyelela ikhwalithi yesithombe engcono ezimeni zokukhanya okuphansi; ubude bendawo kanye nenkundla yokubuka inquma inkambu yokubuka nokukhulisa isithombe.
C.Isithomberisixazululo
Lapho ukhetha i-lens, udinga futhi ukukhetha ilensi efanelekile ngokusekelwe ezidingweni zokulungiswa kwesithombe. Ukulungiswa kwelensi kufanele kufane namaphikseli ekhamera ukuze kuqinisekiswe izithombe zekhwalithi ephezulu.
D.Ikhwalithi yokubona yelensi
Ikhwalithi yokubona yelensi inquma ngokuqondile ukucaca nokuhlanekezelwa kwesithombe. Ngakho-ke, lapho ukhetha i-lens, kufanele ucabangele ilensi evela kumkhiqizo othembekile ukuze uqinisekise ukusebenza okuzinzile kwe-optical.
E.Ukuvumelana nezimo zemvelo
Lapho ukhetha ilensi, kufanele futhi ucabangele izimo zemvelo zohlelo lwakho lokusebenza. Isibonelo, uma indawo yohlelo lokusebenza inezici ezifana nothuli, umswakama, noma izinga lokushisa eliphezulu, udinga ukukhetha ilensi evikela uthuli, engangeni manzi, futhi imelana nezinga lokushisa eliphezulu.
F.Ibhajethi yelensi
Isabelomali singenye yezinto ezibalulekile okufanele uzicabangele lapho ukhetha ilensi. Imikhiqizo ehlukene namamodeli amalensi anezintengo ezihlukene, ngakho qiniseka ukuthi ukhetha ilensi efanele ngokuya ngebhajethi yakho.
Imicabango yokugcina:
UChuangAn wenze umklamo wokuqala kanye nokukhiqizwa kweamalensi ezimboni, ezisetshenziswa kuzo zonke izici zezicelo zezimboni. Uma unentshisekelo noma unezidingo zamalensi ezimboni, sicela usithinte ngokushesha ngangokunokwenzeka.
Isikhathi sokuthumela: Jul-16-2024
