1.Ingabe ilensi ye-engeli ebanzi ifanele ukuma ngobude?

Ngokuvamile impendulo ithi cha,ama-lens abanzingokuvamile azikulungele ukudubula izithombe. Ilensi ye-engeli ebanzi, njengoba negama liphakamisa, inendawo yokubuka enkudlwana futhi ingafaka indawo ethe xaxa esithombeni, kodwa izophinde ibangele ukuhlanekezela nokonakala kwezinhlamvu ezisesithombeni.

Okusho ukuthi, ukusebenzisa ilensi ye-engeli ebanzi ukudubula izithombe kungase konakalise izici zobuso zabalingiswa. Isibonelo, ubukhulu bekhanda nomzimba bubukeka bukhudlwana, futhi imigqa yobuso nayo izoba yinde futhi ihlanekezelwe. Lokhu akuyona inketho efanelekile yokuthwebula isithombe.

Uma udinga ukuthatha ukuma ngobude, kuyanconywa ukuthi usebenzise ubude befocal obumaphakathi noma ilensi ye-telephoto ukuze uzuze umphumela wokuma ngobude ongokoqobo nowemvelo wezinhlangothi ezintathu. Ngakho-ke, iyiphi ilensi ene-angle ebanzi elungele ukushuthwa?

A i-lens ene-wide angleinobude bokugxila obufushane, ngokuvamile obuphakathi kuka-10mm no-35mm. Umkhakha wayo wokubuka mkhulu kunalokho ongabonwa iso lomuntu. Ilungele ukudubula izigcawu eziminyene, indawo ebanzi, nezithombe ezidinga ukugcizelela ukujula kwenkambu nemiphumela yokubuka.

Umfanekiso wokudubula welensi ebanzi

Ngenxa yomkhakha wayo obanzi wokubuka, ilensi ene-engeli ebanzi ingathwebula ama-elementi amaningi, yenze isithombe sicebe futhi sibekwe ngaphezulu. Ilensi ye-engeli ebanzi ingaletha izinto ezikude naseduze esithombeni, inikeze umuzwa wokuvuleka. Ngakho-ke, amalensi ane-engeli ebanzi avame ukusetshenziselwa ukudubula izakhiwo, izigcawu zemigwaqo yedolobha, izikhala zasendlini, izithombe zeqembu, nokuthwebula izithombe zasemoyeni.

2.Umgomo wokuthatha izithombe kanye nezici zeama-lens abanzi

Ukuthwebula ngelensi ye-engeli ebanzi kuzuza umphumela we-engeli ebanzi ngokuklanywa kwesistimu yelensi kanye ne-engeli yokuqagela yokukhanya (ngokudlulisa ukukhanya ngohlelo oluthile lwamalensi, indawo ekude ne-eksisi emaphakathi iboniswa inzwa yesithombe yekhamera noma ifilimu), ngaleyo ndlela inika amandla ikhamera ukuthi ithwebule ngendlela ebanzi. Lesi simiso sisetshenziswa kakhulu ezithombeni, ekukhangiseni nakweminye imikhakha.

Singawuqonda umgomo wokuthwebula amalensi ane-engeli ebanzi kusukela kulezi zici ezilandelayo:

Isistimu yelensi:

Amalensi ane-engeli ebanzingokuvamile zisebenzisa inhlanganisela yobude bokugxila obufushane namalensi amakhulu obubanzi. Lo mklamo uvumela ilensi ye-engeli ebanzi ukuthi iqoqe ukukhanya okwengeziwe futhi ikudlulise kahle kunzwa yesithombe sekhamera.

Ukulawula ukuchithwa:

Ngenxa yomklamo okhethekile, ama-lens ane-engeli ebanzi avame ukuthambekela ezinkingeni ze-aberration, njengokuhlanekezela, ukuhlakazeka, njll. Ukuze baxazulule lezi zinkinga, abakhiqizi basebenzisa izingxenye ezihlukahlukene ze-optical kanye nobuchwepheshe bokumboza ukuze banciphise noma baqede le miphumela emibi.

I-engeli yokuqagela:

Ilensi ye-engeli ebanzi ifinyelela umphumela we-engeli ebanzi ngokukhuphula i-engeli phakathi kwesigcawu ne-eksisi emaphakathi yelensi. Ngale ndlela, indawo ethe xaxa izofakwa esithombeni ebangeni elifanayo, okubonisa indawo ebanzi yokubuka.

I-lens ene-engeli ebanzi

Kuzinhlelo zokusebenza ezingokoqobo, sidinga ukukhetha ilensi efanelekile yomugqa obanzi ngokusekelwe ezidingweni ezithile zezithombe nezigcawu. Ngokuvamile, izici zokuthwebula zamalensi ane-engeli ebanzi zimi kanje:

Ukuhlanekezelwa kombono:

Uma udubula vala izinto nge-ai-lens ene-wide angle, ukuhlanekezelwa kombono kwenzeka, okusho ukuthi esithombeni esithwetshuliwe, izinto eziseduze zizovela zizikhudlwana, kuyilapho izinto ezikude zizovela ezincane. Umthelela wokuhlanekezelwa kombono ungasetshenziswa ukudala umphumela wokubuka oyingqayizivele, njengombono oyihaba nokugcizelela izinto ezingaphambili.

Inkambu yokubuka ebanzi:

Ilensi ye-engeli ebanzi ingathwebula indawo yokubuka ebanzi futhi ingathwebula indawo noma izigcawu ezengeziwe. Ngakho-ke, amalensi ane-engeli ebanzi avame ukusetshenziselwa ukudubula izigcawu ezifana nezindawo, izakhiwo, endlini, nezixuku ezidinga ukukhombisa umuzwa wesikhala esibanzi.

Imiphetho egobile:

Amalensi ane-engeli ebanzi athambekele ekuphendukeni emaphethelweni noma emiphumeleni egobile, ikakhulukazi emaphethelweni avundlile naqondile. Lokhu kungenxa yemikhawulo engokomzimba yokwakheka kwelensi futhi kwesinye isikhathi kungasetshenziswa ukudala ngamabomu umthelela okhethekile noma ulimi olubonakalayo.

Ukujula kwenkambu okunwetshiwe:

Ilensi ye-engeli ebanzi inobude bokugxila okuncane, ngakho-ke ingakwazi ukukhiqiza ukujula okukhulu kwenkundla, okungukuthi, kokubili indawo engaphambili nengemuva ingagcina isithombe esicacile ngokuqhathaniswa. Le mpahla yenzaama-lens abanziiwusizo kakhulu ekuthwebuleni lapho ukujula okuphelele kwesigcawu kudinga ukugcizelelwa.

Ukufunda Okuhlobene:Iyini I-Fisheye Lens?Iziphi Izinhlobo Ezintathu Zamalensi E-Fisheye?