Buyela kwiZiseko zeFoto: Unxibelelwano phakathi kwe-ISO, isantya kunye no-F-Stop

Buyela kwiZiseko zeFoto: Unxibelelwano phakathi kwe-ISO, iShutter Speed ​​kunye neF-Stop

Kwiinyanga ezizayo uJohn J. Pacetti, CPP, AFP, uzobe ebhala uthotho lwezifundo ezisisiseko zokufota.  Ukuzifumana zonke khangela nje "Buyela kwizinto ezisisiseko”Kwibhlog yethu. Eli linqaku lesibini kolu ngcelele. UJohn undwendwela rhoqo e Iqela le-MCP kuFacebook. Qiniseka ukuba ujoyine-isimahla kwaye inolwazi olukhulu kakhulu.

Kwinqaku lethu lokugqibela ndikunike umbono ngokubanzi wokuba Unxantathu obonakalisayo usebenza kunye. Ngeli xesha siza kungena kwiinkcukacha malunga nonxibelelwano.

Okokuqala iinkcukacha ezithe kratya kwinto nganye kwezi zintathu zokuvezwa;

ISO Uvakalelo lwenzwa. Inzwa iqokelela ukukhanya. Ukukhanya kwenzwa yinto eyenza umfanekiso wakho. Ezantsi inombolo ye-ISO ukukhanya ngakumbi kuyafuneka ukwenza umfanekiso, imiboniso eqaqambileyo. Ukuphakama kwenombolo ye-ISO ukukhanya okuncinci kuyadingeka ukwenza umfanekiso, iindawo ezimnyama.

Isantya sokuhamba lixesha lokuvala ivuliwe evumela ukukhanya ukuba kubethe isivamvo. Ukucotha isantya se-shutter (1/15, 1/30) ukukhanya okude kubetha inzwa. Ukukhawuleza kwesantya se-shutter (1/125, 1/250) ukukhanya okufutshane kubetha isivamvo.

F-Misa kuvulwa umgodi. Ukuvulwa kokukhanya kudlula kwindlela eya kwisenzi. I-F-Stop ilawula inani lokukhanya elifikelela kwisenzi kunye nobunzulu bentsimi (DOF). I-DOF yindawo ekugxilwe kuyo ngokubanzi kumfanekiso. Ezantsi i-F-inani (1.4, 2.8) ukubanzi kokuvula, ukungabi nzulu kwe-DOF. Ukuphakama kwenani le-F (8, 11) kukucuthwa kokuvula, kokukhona kuya kuba kukhulu nge-DOF.

Ngoku ekubeni uyazi ukuba nganye yezi zinto ziyenzayo xa usenza umfanekiso, masijonge kwindlela yokujonga useto lwakho lokuvezwa.

Ujonga njani useto lokuvezwa kwakho: Enye indlela yokwenza oku.

Ukukhetha kwam kukuthatha isigqibo nge-ISO yam kuqala. Kuba i-ISO yimvakalelo yoluvo ekukhanyeni, kwimibala ekhanyayo, njengokukhanya kwelanga, elunxwemeni okanye ipaki ndingakhetha i-ISO ephantsi, 100. Ukuba lusuku olunamafu olunokuba ngama-200. ube kwi-ISO ephezulu kwimiboniso yokukhanya kwemini. Kunokubakho ngaphandle. Njengomgaqo oqhelekileyo u-100 okanye u-200 kufuneka enze ngaphandle ngaphandle kwiimeko ezininzi. Kwindawo zokukhanya eziphantsi, ngokuhlwa, ngongcwalazi, ndingakhetha i-400, mhlawumbi i-800, kuxhomekeke kubungakanani bokukhanya. Ngaphakathi ndingakhetha i-400 nge-flash mhlawumbi i-800 ukuba ndifuna ukubona ukukhanya kwegumbi, mhlawumbi nge-1600, nangaphezulu ukuba ndisebenza ngokukhanya okukhoyo, njengakwicawa engavumeli ukufota okufakwayo.

Nje ukuba ndikhethe i-ISO yam, ndithathe isigqibo ngobunzulu bentsimi (DOF) endiyifunayo. Ngaba ndifuna i-DOF engekho nzulu, (F-2.8, 4.0) okanye i-DOF enzulu (F-11 okanye ngaphezulu). Nje ukuba ndenze eso sigqibo yonke into ekufuneka ndiyenzile kukuseta iSantya sam sokuVala ngokusekwe kwezi zicwangciso zimbini, iF-Stop kunye ne-ISO. Nje ukuba ndibeke isantya sam sokuVala, ndiza kwenza imifanekiso yovavanyo embalwa ukuqinisekisa ukuba ukubonakaliswa kwam kuchanekile, ukuba akunjalo, ndiza kwenza uhlengahlengiso oluncinci ukuze ndifumane ukubonakaliswa okuhle.

Ndiyathemba ukuba le nto ikunika ukujongwa ngakumbi kunxantathu wethu wokuvezwa. Phuma uye kuziqhelanisa. Fumana isiphatho esifanelekileyo sendlela unxantathu wokuvezwa usebenza ngayo. Yenza loo nto kwaye uya kuba usendleleni yokwenza imifanekiso emikhulu engayi kufuna ukulungiswa, nje ukuhlela okuthile. Njengoko amanqaku ethu eqhubeka, siza kungena kwiinkcukacha malunga nonxantathu wokuvezwa.

UJohn J. Pacetti, i-CPP, i-AFP-iStudiyo saseSouth Street     www.southstreetstudios.com

Umyaleli ka-2013 kwiSikolo seMARS- Iifoto eziyi-101, iziseko zokufota  www.marschool.com

Ukuba unemibuzo, zive ukhululekile ukuqhagamshelana nam ku [imeyile ikhuselwe]. Le imeyile iya kwifowuni yam ukuze ndikwazi ukuphendula ngokukhawuleza. Ndingakuvuyela ukunceda ngayo nayiphi na indlela endinokuyenza ngayo.