Lapho ulungisa iris, iris ihlale isendaweni yokuvula enkudlwana.Kuphela uma inkinobho yokuvala icindezelwa ukuze kukhululwe isivalo, indawo yokuvula ifinyela ngokuzenzakalelayo ku-f-factor ebekiwe, bese imbobo ibuyela endaweni enkulu ngemva kokuchayeka.
Iyini ilensi?Ilensi ineminwe emibili efilimini nakumabonakude, eyodwa ibhekisela ezingxenyeni zokukhanya ezisetshenziswa amakhamera emuvi namaphrojektha ukuze kukhiqizwe izithombe, futhi yakhiwe ngamalensi amaningi.Izinhlobonhlobo zamalensi ahlukene anezici ezihlukile zokumodela.Ukusetshenziswa kwabo ekumodeleni izithombe kwakha indlela yokubonisa i-optical;okwesibili kubhekisela esithombeni esiqhubekayo esithathwe kusukela ekuvuleni kuya ekucishweni kwamandla, noma ingxenye ephakathi kwamaphoyinti amabili okuhlanganisa , Okubizwa nangokuthi i-ytterbium.Umunwe owodwa neminwe emibili imiqondo emibili ehluke ngokuphelele.Ukuze uhlukanise umehluko phakathi kwalokhu okubili, eyodwa ibhekisela kwilensi yokubona futhi kokubili ibhekisela esithombeni selensi.
Ilensi okukhulunywa ngayo efilimini nakumabonakude ayiyona ilensi engokomzimba noma yokubona, kodwa ilensi ethwala isithombe futhi engakha isithombe.Ilensi iyiyunithi eyisisekelo ehlanganisa yonke ifilimu.Amashothi amaningana akha ipharagrafu noma isigcawu, futhi izigaba ezimbalwa noma izigcawu zakha ifilimu.Ngakho-ke, ilensi futhi iyiyunithi eyisisekelo yolimi olubonakalayo.Kuyisisekelo sokulandisa nenkulumo.Ekushuthweni kwangaphambili kwemisebenzi yefilimu neyethelevishini, ilensi isho isamba sengxenye yezithombe ezithathwe yikhamera kusukela ekuqaleni kuya kokuma;ekuhleleni ngemva kokuhlela, ilensi iyiqoqo lezithombe phakathi kwamaphoyinti amabili okuhlela;kwifilimu eqediwe, eyodwa Ilensi isho ingxenye ephelele ukusuka ekuguqukeni kwangaphambilini kokubona kuya ekuguqukeni okulandelayo kokubona.
Umsebenzi oyinhloko welensi ukuqoqa ukukhanya okubonisiwe entweni ekhanyisiwe futhi ukugxilise ku-CCD.Isithombe esivezwe ku-CCD sibheke phansi.Isekhethi yekhamera inomsebenzi wokuyihlehlisa, futhi isimiso sayo sokuthwebula siyafana nesomuntu.
Ukuhlukaniswa kwelensi:Ngokusho kwemvelaphi ye-lens, ikakhulukazi i-lens yaseJapane ne-lens yesiJalimane.Amalensi aseJapane ngokuyinhloko anombala ongcono wokuzala kabusha, futhi amalensi aseJalimane anomqondo oqinile wokwendlaleka.Emakethe, amalensi aseShayina ahlala kancane kancane emakethe, ikakhulukazi ngoba amanani aphansi.
Isikhathi sokuthumela: Oct-08-2021