1,Iyini ilensi ye-pinhole?
Ilensi ye-pinhole, njengoba igama lisho, ilensi encane kakhulu, imbobo yayo yokudubula ilingana nembobo encane, ilensi esetshenziswa amakhamera amancane kakhulu. Amalensi embobo encane asebenzisa isimiso sokuthwebula izithombe zembobo encane ukuthola izithombe futhi abe nezici ezithile ezihlukile kanye nezinhlelo zokusebenza.
2,Yiziphi izici zelensi ye-pinhole?
Njengengxenye ekhethekile yedivayisi yekhamera, ilensi ye-pinhole inezici ezithile ezihlukile:
(1)Ukubukeka okufihliwe
Izimbobo zelensi ye-pinhole zincane kakhulu futhi zifana nosayizi we-pinhole. Ngenxa yobubanzi be-pore encane, usayizi wekhamera yonke ye-pinhole uncane kakhulu, ngokuvamile usayizi wezinhlamvu zemali kuphela. Lo mklamo omncane wenza ikhamera ye-pinhole icashe kalula ezindaweni ezahlukahlukene, futhi kunzima ukuqaphela.
(2)Kuhle kakhulusi-cenarioiisazi semilingo
Ngenxa yomklamo okhethekile welensi ye-pinhole, ukujula kwensimu yayo kujule kakhulu futhi kungathwebula izithombe ezijulile. Lokhu kusho ukuthi izinto eziphambi kwekhamera zingaboniswa ngokucacile ebusweni besithombe kungakhathaliseki ukuthi ibanga lingakanani. Ngokusekelwe kulesi sici, ilensi ye-pinhole isebenze kahle lapho kuthwetshulwa izindawo kanye nezakhiwo kudinga ukucaca okukhulu.
(3)Ubude obuqondile kanye nokuvulwa okuqinile
Iilensi yembobo encanengokuvamile ayinabo ubude be-focal kanye ne-aperture elungisekayo. Uma isifakiwe, ikhono lokwamukela i-engeli kanye nokukhanya kwelensi liyalungiswa. Nakuba lokhu kunqunyelwe ekuguquguqukeni kokudubula ngezinga elithile, kwenza futhi ilensi ye-pinhole ibe lula futhi kube lula ukuyisebenzisa.
Ilensi ye-pinhole
(4)Ukusebenza okulinganiselwe ezindaweni ezinokukhanya okuphansi
Njengoba ilensi ye-pinhole inomgodi omncane kanye nokukhanya okulinganiselwe, umphumela wokudubula ezindaweni ezinokukhanya okuphansi ungase ungabi muhle. Lokhu kungabangela izinkinga ezifana nezithombe ezifiphele kanye nokuphambuka kombala, futhi kudingeka imithombo yokukhanya eyengeziwe noma imishini yokusiza ukuthuthukisa umphumela wokudubula.
(5)Ngesandlasukusetha
Amalensi e-pinhole ngokuvamile awanazo izici ezithuthukile njenge-autofocus futhi adinga izilungiselelo ezenziwe ngesandla kanye nokulungiswa. Lokhu kwandisa ubunzima bokusebenza ngezinga elithile, kodwa futhi kunikeza inkululeko eyengeziwe, okuvumela abathwebuli bezithombe ukuthi balungise ngokuguquguqukayo ngokwezidingo ezithile.
(6)Uhla olubanzi lwezicelo
Ukufihlwa kanye nokulula kokusetshenziswa kweamalensi e-pinholezenze zisetshenziswe kabanzi emikhakheni eminingi. Kungakhathaliseki ukuthi ukuqapha ukuphepha kwasekhaya, ukuqapha ihhovisi noma ukuqapha indawo yomphakathi, amalensi e-pinhole angadlala indima ebalulekile. Ngesikhathi esifanayo, asetshenziswa kabanzi ocwaningweni lwesayensi, ukuqapha ithrafikhi, ukuqaphela izilwane kanye neminye imikhakha.
3,Yiziphi izindlela zokusebenzisa amalensi e-pinhole?
Izindawo zokusetshenziswa kwamalensi e-pinhole zifaka phakathi izici ezilandelayo:
(1) Ukuqapha ezokuphepha
Amalensi e-pinhole mancane futhi afihliwe, ngakho angafakwa kumadivayisi amancane kakhulu futhi asetshenziswe njengokuqapha ukuphepha okufihliwe. Ngenxa yobukhulu bawo obuncane, angafihlwa kalula noma kuphi ukuze adubule indawo ezungezile ngasese.
Ilensi ye-pinhole yokuqapha ukuphepha
(2) Ukuqapha ithrafikhi
Amalensi e-pinhole nawo adlala indima ebalulekile ekuphathweni kwethrafikhi yasemadolobheni. Asetshenziselwa ukuthatha izithombe zokwephulwa kwemithetho yethrafikhi, ukuqopha izigameko zezingozi zethrafikhi, njll., okusiza ekuthuthukiseni ukuphepha kwethrafikhi kanye nokusebenza kahle kokuphatha.
(3) Insimu yobuciko
Amalensi e-pinhole asetshenziswa emkhakheni wobuciko ukukhiqiza imiphumela ebonakalayo ehlukile. Ngenxa yokuthi amalensi e-pinhole anokujula okungenamkhawulo kwensimu, angenza kokubili ingaphambili kanye nesizinda kubonakale ngokucacile. Abaculi abaningi nabathwebuli bezithombe basebenzisa le ndlela ukudala umuzwa ophuphile, we-retro.
(4)Insimu yocwaningo lwesayensi
Ngenxa yezimpawu ze-amalensi e-pinhole, zisetshenziswa kabanzi emkhakheni wocwaningo lwesayensi. Isibonelo, ekubonweni kwezinkanyezi, amalensi e-pinhole angasetshenziswa ukubuka ilanga noma ezinye izidalwa zasezulwini. Ngesikhathi esifanayo, amalensi e-pinhole nawo angamathuluzi abaluleke kakhulu ekubonweni kokusabela kwamakhemikhali amancane kanye nezimo zomzimba zesikali se-athomu.
(5)Insimu yezokwelapha
Ku-radiology kanye ne-nuclear medicine imaging, amalensi e-pinhole adlala indima ebalulekile kumasu okuthwebula izithombe angangenisi uhlamvu njenge-PET (positron emission tomography) kanye ne-SPECT (single photon emission computed tomography).
Ilensi ye-pinhole yokuhlolwa kwezokwelapha
(6)Insimu yezemfundo
Amalensi e-pinhole asetshenziswa kabanzi kwezemfundo, ikakhulukazi ekufundiseni nge-optics kanye nezithombe, ukusiza abafundi baqonde ukuthi ukukhanya kusakazeka kanjani ngelensi nokuthi izithombe zakhiwa kanjani.
(7)Okomuntu siqupi-hotography
Ukufihlwa kwelensi ye-pinhole nakho kwenza ibe nezinhlelo ezithile emkhakheni wezithombe zomuntu siqu. Abantu bangayifihla ilensi ye-pinhole njengezinto zansuku zonke, njengebhokisi lephepha, ijeli yokugeza, izibani ezincane zetafula, njll., zezithombe ezifihliwe.
Kufanele kuqashelwe ukuthi ngenxa yemvelo yayo efihliwe, amalensi e-pinhole asetshenziswa kalula yizigebengu zomthetho emisebenzini engekho emthethweni, njengokubuka, ukuthatha izithombe ngasese, njll., okuphula kakhulu ubumfihlo bezakhamuzi kanye nesithunzi somuntu siqu.
Ngakho-ke, uma usebenzisaamalensi e-pinhole, imithetho efanele, imithethonqubo kanye nezindinganiso zokuziphatha kumele zilandelwe ukuqinisekisa ukuthi zisetshenziswa ngokomthetho futhi zihambisana nemithethonqubo.
Imicabango Yokugcina:
Uma unesifiso sokuthenga izinhlobo ezahlukene zamalensi okuqapha, ukuskena, ama-drones, ikhaya elihlakaniphile, noma olunye uhlobo lokusetshenziswa, sinalokho okudingayo. Xhumana nathi namuhla ukuze ufunde kabanzi ngamalensi ethu nezinye izesekeli.
Isikhathi sokuthunyelwe: Disemba 13-2024
