Ikhamera ithuthukile ngendlela eyisimanga. Ukusuka kwimvelaphi ekude kakhulu yekhamera kufihlwe kuze kube senqubo yokufakwa ekhompyutheni, sibambe iqhaza ekwakhiweni kwekhamera enezithombe ecishe ifane nesidalwa esiphilayo, uhlobo oluthile lokuthi njenganoma iyiphi into ephilayo ikwazile ukuziphelelisa futhi ivumelane nezidingo amandla empucuko. Izifundo emkhakheni wokubona nokubanjwa kweqiniso lethu kanye nokufakwa kwalo ekusekelweni ngokomzimba kwenze ukuthi kufinyeleleke kalula umhlaba ofanayo lapho imiqondo kanye nemikhondo yesipiliyoni senhlalo ibhajwe ingunaphakade, ngendlela yobufakazi besikhathi sethu esedlule.
Njengoba sithole ukuthi singabamba isikhathi ngomshini, sesiqale umjaho obheke ekupheleleni, ngokufuna ama-nuances amaningi, ukujula, kanye nemikhawulo yezenzo ukuguqula umcimbi obandayo ube yinto eyiqiniso nephelele. Eqinisweni, kungenzeka ukuthi uqaphele ukuthi isikhathi ngasinye lapho intuthuko neziphakamiso ziza ngokushesha. Masonto onke, cishe nsuku zonke, kunentuthuko emkhakheni wethu ekhonjiswa ku-premiere yamadivayisi amasha aklanyelwe ukusondela ezithombeni ngokunemba okukhulu. Kodwa-ke, yize kunale ntuthuko ebalulekile asikafiki esiphethweni senqubo, asikakakwazi ukukhiqiza isithombe esihle kakhulu somhlaba wethu: Lesi esithwetshulwe ukubuka kwethu. I-Surreal njengoba kungabonakala, ikhamera enhle kunazo zonke namuhla enomona ngamehlo ethu. Kepha yini lokhu kuphansi okungenakugwemeka ngenxa yalokho? Qhubeka ufunde futhi uzokwazi ukuthi ngikhuluma ngani!
Impendulo icacile: Umuntu obhekene nalokhu kuphansi okuthile uhla olunamandla. Le yipharamitha lapho kuqhathaniswa kusungulwa khona futhi ukuvela kwekhamera ngokufaka umshini kuyabaluleka. Sesivele sikhulume kwesinye isikhathi noma okunye ngobubanzi obunamandla kepha namhlanje bengifuna ukucwaninga ngokujulile kulo mqondo ngoba uyisisekelo sanoma yimuphi uchwepheshe emhlabeni wesithombe, futhi ngukuthi ngaleli pharamitha siyakwazi ukuhlola inani lamasignali ikhamera yethu elikwazi ukuwathumba futhi limelele.
El Ububanzi beDynamic (Ububanzi beDynamic) kwanoma iyiphi into, okuphakathi noma ukwesekwa (akuyona into ekhethekile yekhamera enezithombe) kufanekisela inani lamasignali okwazi ukuwathwebula, ukuwahlukanisa noma ukuwakumela.
Uma kunjalo, siphetha ngokuthi lapho ubukhulu bekhamera bukhula ngokwengeziwe, okuhlukahluka kakhulu kuzoba isethi yamasignali ekwaziyo ukuwabona, ukuwasebenzisa kanye nokuwasebenzisa.. Emkhakheni wamakhamera wezithombe, ibanga eliguqukayo likalwa ngokusebenzisa isethi yamathoni angabonakala (kusuka kumnyama kakhulu kuya kokukhanya kakhulu).
Kepha singalinganisa kanjani ububanzi obunamandla besithombe?
Ezikhathini eziningi sisebenza nezithombe zemvelaphi engaziwa (ikakhulukazi uma sizithola kumuntu wesithathu) futhi njengoba singazithathi lezi zithombe futhi singasebenzanga nemingcele yokubamba, siyakwazi ukuthi uhla lwesithombe sethu luphi.
Kulezi zimo ithuluzi le-histogram libalulekile. Ezikhathini eziningi sikhulume ngayo (ngokwesibonelo lapho sibhekene nesicelo se-Lightroom) futhi ngenxa yayo singaba nesimo somumo wesithombe sethu.
I-histogram isisiza ukuthi sihlaziye isimo sezithombe zethu futhi sithole amaphutha nezindawo ezivezwe ngokweqile noma ezingeveziwe. Ngokusebenzisa i-histogram singathola ibhalansi futhi sisebenze ekwandiseni ububanzi obunamandla.
Ngezansi ngiphakamisa isibonelo ngezithombe ezimbili ezinamanani ahlukile wokuqhathanisa. Owokuqala uqhathaniswa kakhulu kunowesibili, into ekhonjiswa ku-histogram.
Kokuqala sithola ukungabi bikho kwamanani ngokuphelele endaweni yethunzi nasendaweni egqamisiwe, kanti kwesesibili sithola isibuko esibanzi ngandlela thile kusukela ngemuva kokuyiphatha sesikhuphule ububanzi bamathoni nemithunzi kufaka phakathi izithunzi ezivame amnyama nemithunzi evame ukuba mhlophe.
Kungani iDynamic Range yekhamera ibaluleke kangaka?
Ukukhanyisa kuyisisekelo sayo yonke inqubo yokuqashwa. Sisebenza ngokukhanya ngamagama aphambili, lo yi-protagonist weqiniso owandayo, ubonakaliswe noma amunce izinto esebenza kuzo. Cabanga ukuthi sizothatha isithombe-skrini sesigcawu esiveza into elula kakhulu futhi emnyama kakhulu, isibonelo ukukhanya kwangemuva. Kulezi zimo, ikhamera kufanele ibe nobubanzi obunamandla obuncane ukuze ikwazi ukumela nokuthwebula izinto zethu ezichazwe kahle nangokunemba okuthile.
Lawo makhamera aletha ibanga eliphansi elinamandla azokhiqiza amaphutha, isithombe esichazwe kabi kakhulu kanye nokushoda kwama-nuances ezindaweni ezikhanyiswe kakhulu nasezindaweni ezingakhanyisiwe kangako.
Lokhu kuhlobene ngqo ne- izinombolo f, umqondo obaluleke kakhulu esizoxoxa ngawo ngokujula ngokwengeziwe kuma-athikili alandelayo.