Hlunga wesilinganiso: incazelo kanye isicelo

Ukuze zifiki ukuba izithombe ukuqonda ngayo nalokho okuzoxoxwa ngakho, lokho kungase kudinge kwencazelo incazelo. Yini-ke, eqinisweni, a umyela ukuhlunga? Kuyinto ipuleti esobala eyenziwe ngepulasitiki optical noma ingilazi, lapho ethambile bushelelezi umyela okuyisidina. Uma ungeyena ujwayelene ithuluzi "umyela" ku abahleli ingcaca, kubalulekile ukuchaza. Kulo mfanekiso idlala indima aphuma ngombala owodwa kuya kwenye, futhi ukuhlunga esetshenziswa elula ukuhwalala umyela kusukela grey ukuze kube sobala.

Kungani ngidinga isihlungi

Gradientnik ikakhulukazi esetshenziswa landscape umthwebuli wezithombe. Isikhathi esining impela lapho bethwebula inkinga kwenkundla yokuchayeka engalingani phezulu (esibhakabhakeni) kanye ephansi (umhlaba) ingxenye. Uma sikubeka kalula, isibhakabhaka cishe njalo libukeka liqhakazile okuningi kuka phansi, okuyinto kudala Ukungadli. Ngokwesibonelo, kokukhipha kwelanga, zonke photographer ukhona yini umuntu ongakaze lokhu - esithombeni kukhona kuphela zezinkulumo amnyama lezinto emhlabathini. Esimweni esinjalo, kuba isihlungi umyela ilungisa inkinga ebhekene izithombe ngezansi.

Kukhona futhi ehlunga imibala for lens, kulungele akunika izithombe imiphumela engavamile futhi yinqaba umbala ukuhlukahluka. Ngokuvamile, aphuma ingxenye esobala ukuhlunga emthunzini oluhambisana 1-3 izinyathelo ukuchayeka, okwenza kube lula ukuthola izilungiselelo esifanele ngokudubula kuye.

Izinhlobo umyela izihlungi

izihlungi wesilinganiso letiyindilinga - threaded ukukopela lens, kanye elingunxande - aboshelwe zigxilé umnikazi lens.

1. isihlungi Round kwi lens muhle ngoba ezenziwe ngengilazi optical, ngokuvamile isicelo multi-enamathela. Kodwa ethile yayo esemqoka - ukungakwazi ukuhambisa iphuzu ngaphansi izinhlangothi amnyama nokukhanya. Nokho, ngenxa ubukhulu icwecwe, kulula ukuba baphathe futhi ezokuthutha.
2. I isikwele eyenziwe ngepulasitiki (njengoba lisetshenziswe ngokuhlukile usebe futhi usengozini yokuthola umonakalo mechanical) futhi ukukhanya, kodwa awukwazi kuphela uphendukisa kodwa ukuthutha up and down, okuyinto kuyandisa kakhulu landscape. Bethwebula landscape ukusebenzisa isihlungi umyela, kubalulekile nokusetshenziswa tripod, njengoba ipuleti plastic lens unezela interface esengeziwe ezimbili (plastic-to-air), ngenxa okuyinto incipha nokucija nesithombe ukuchayeka kuyadingeka ukwandisa cishe ekabili.

Ngezinzuzo zokusebenzisa lemifanekiso umyela

Lemifanekiso umyela kuyinto lukaKhisimusi bezithombe usebenzisa ifilimu amakhamera, kusukela ifilimu inebanga elilinganiselwe ukuzwela. Ngaphambili, babefanele noma zisebenzisa gradientnik noma ukwamukela ukulahlekelwa okukhulu ngokuningiliziwe. Kodwa bezithombe eziningi zanamuhla senqabe ukuyisebenzisa, bethi kumhleli sokuqhafaza ungakwazi kalula ukusebenzisa umyela ofanayo ukucutshungulwa izithombe.

Nokho, isipiliyoni esiwusizo sisikisela ukuthi ukusebenzisa umyela isihlungi izindleko khamera njengoba konga isikhathi esiningi futhi ugweme umsebenzi okungadingekile izinhlelo ongenza akubona bonke, ngisho bezithombe ezinhle kakhulu.