Kungani ngidinga i-lens hood futhi nini ukuyisebenzisa?

Wonke umuntu uyazi ukuthi emsebenzini we-photographer, into esemqoka ilula. Phela, ngisho nezwi elithi "izithombe" ngesiGreki lisho "ukukhanya". Ngakho-ke, kubaluleke kakhulu ukuthi inani lokukhanya elihlasela i-lens lilungile kakhulu. Njengomthetho, ukukhanya kwe-studio kanye nama-lens azwela kakhulu asetshenziselwa lokhu. Kodwa kuthiwani uma kukhona ukukhanya kakhulu noma ifika engxenyeni efanele kuya lens, ukudala ukukhanya okungadingekile? Manje ungenzi ukudubula ebumnyameni obumnyama, uphenduke ngokuphelele elangeni. Yilokho okuhlangene ngakho! Leli yingxenye yepulasitiki eyindilinga evunguza emoyeni.

I-lens hood isetshenziswe, njengomthetho, lapho kudubula ilanga noma omunye umthombo wokukhanya. Lokhu kusiza ukwandisa umehluko nombala wezithombe eziholele ngokuvimba imisebe yokukhanya engafinyelela kumatrix, futhi nokugwema i-vignetting (ukubumnyama noma ukugqamisa imiphetho yesithombe). Ngenxa yalokhu, ikhwalithi yezithombe ezitholiwe zanda. Ama-lens hoods nawo avimbela ukubukeka kwamabala welanga nokukhanya kwezithombe. Ukuvikelwa ekungeneni kwemisebe ekhanyayo ku-matrix yiyona eyinhloko ohlwini lwalezizathu zokuthi kungani kudingeka i-lens hood.

Futhi, abathwebuli bezithombe abaningi basebenzisa izihlungi zokukhanya: ukuhogela, i- ultraviolet, i-gray neutral, nabanye. Ukumangalela okuncane nokulimala kuyabonakala ekukhanyeni kwelanga. Kulula kakhulu ukufihla-yingakho udinga i-lens hood. Ivimbela imisebe eqondile yokukhanya ekuboniseni izindawo ezilimazile, ngakho azikwazi ukuphazamisa ikhwalithi yesithombe. Yiqiniso, uma singakhulumi ngemifantu engxenyeni yesihlungi.

Ngendlela mayelana nomonakalo. Ihood iphinde ivikele ama-optics akho kubo. Akekho ovikelekile ezingozini (futhi kusukela ekuthintweni kwe-banal kuminwe ku-lens, enikeza ukunyathelisa kwamafutha), ngakho-ke i-lens hood ingakusindisa wena ne-lens yakho ngaphezu kwesisodwa.

Futhi-ke, akukho lutho olungashintsha umxube lapho kudubula ezimvula noma sezulu esiqhwa! Awukwazi ngisho nokuchaza ukuthi amaconsi amanzi agijima phansi kwe-lens ngeke aholele kunoma yini enhle. Ngakho-ke, ukuba nomxube uma kwenzeka isimo sezulu esibi singadingekile, kodwa akulimazi.

Kumele futhi uqaphele ukuthi izingxube zama-lens ahlukene zihlukile ngesimo. Ziyakwazi ukucubungula, i-petal noma i-cylindrical. Kungcono ukubonisana nomdayisi noma umthwebuli wezithombe mayelana nokuthi iyiphi i-lens hood ezohambisana nezinjongo zakho zokudubula kanye ne-lens. Kubalulekile ukuthatha lokhu ngokucophelela, ngoba i-lens hood engakhethi ngeke iyenze kuphela imisebenzi yayo, kodwa izoletha nokukhathazeka okungadingekile kumthwebuli wezithombe.

Ngakho-ke, sazi ukuthi yini i-lens hood. Ngokwenza njalo, isetshenziswe ku- studio izithombe, lapho imisebe ye-oblique yokukhanya iwela phezu kwe-lens, lapho ihamba ngezithombe ngokumelene nokukhanya okukhanyayo, olwandle nolweqhwa (ngoba iqhwa namanzi kubonisa imisebe), kusimo sezulu esibi, ama-sunsets futhi ukuvikela ama-optics. Uma lezi zinhlobo zokuqopha zingekho kumbuthano wakho, ngeke ulahlekelwe lutho, wenqaba ukuthenga umxube. Futhi uma usebenza njalo kulezi zinhlobo futhi ufuna indlela yokuthuthukisa ikhwalithi yezithombe - kahle, manje uyazi indlela enhle!