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Nuna hannaye: nawa ne a cikin ku a halin yanzu ke amfani da histogram don daidaita dabarun harbin ku a yayin zama? Idan kana tunanin “hist-o-abin da, ”To wannan shine rubutun blog a gare ku! Yana bayanin kayan yau da kullun game da tarihin tarihi kuma yana amsa tambayoyin masu zuwa:

  • Menene histogram?
  • Ta yaya zan karanta tarihin tarihi?
  • Menene ingantaccen tarihin tarihi?
  • Me yasa zan yi amfani da histogram?

Menene histogram?

Tarihin tarihin shine hoton da zaku iya gani akan bayan SLR na dijital. Shafin ne wanda yayi kama da tsaunin dutse.

correct_exposure Jagoran Mai daukar hoto don Fahimtar Tarihin Tarihi Guest Bloggers Nasihun daukar hoto

Gafarta mini yayin da na shiga cikin wasu fasaha-mumbo-jumbo na ɗan lokaci a nan: wani hoton tarihi yana nuna muku ƙimar haske na duk pixels a hotonku.

Na sani… Na sani. Wannan jumla ta ƙarshe ba ta share abubuwa sosai, shin?

Bari inyi bayanin ta wata hanyar: kaga cewa ka dauki kowane piksel daga hotonka na dijital ka tsara su daki-daki, ka raba su da irin duhun da suke da shi. Dukkanin pixels dinka na gaske da gaske zasu shiga wani tsibiri, pixels din ka na tsakiya zai shiga wani tari, kuma pixels dinka na haske da gaske zasu shiga wani tari. Idan kuna da pixels da yawa a cikin hotonku masu launi iri ɗaya, tarin zai zama da gaske da gaske.

Wannan jadawalin wanda yake kama da tsaunin dutse a bayan kyamararka — wanda yanzu zamu kira shi tarihi—Yana nuna maka wadancan tarin pixels. Ta hanyar duban tarihin, zaka iya saurin gano idan harbin da kayi ɗauke dashi shine fallasa daidai. Karanta don koyon yadda.

Ta yaya zan karanta tarihin tarihi?

Idan akwai babban ganuwa zuwa gefen hagu na tarihin-ko kuma duk an dunƙule shi a gefen hagu na layin - yana nufin cewa kuna da babban tarin baƙaƙen pixels. Watau, hoton ka na iya zama ba a bayyana ba. Idan histogram don hotonku yayi kama da samfurin da ke gaba, ƙila kuna buƙatar ƙara yawan hasken da ke buga firikwensin ku ta hanyar rage saurin motarku, buɗe buɗewar ku, ko duka biyun:

ba a bayyana shi ba Jagoran Mai ɗaukar hoto don Fahimtar Tarihin Tarihi Guest Bloggers Photography Tips

Idan akwai babban ganuwa zuwa gefen dama na tarihin-ko kuma duk an haɗe shi a gefen dama na layin - yana nufin cewa kuna da babban tarin gaske na farar fata ko pixels haske. Kuna tsammani: hotonku na iya zama wuce gona da iri. Idan histogram don hotonku yayi kama da samfurin da ke gaba, ƙila kuna buƙatar rage adadin hasken da ke buga firikwensinku ta hanzarta saurin buɗe ƙofa, dakatar da buɗewa, ko duka biyun:

overexposed A Mai daukar hoto ya Jagora don Fahimtar Tarihin Tarihi Guest Bloggers Photography Tips

Idan tarin pixels dinka yadaddu sosai a cikin dukkan layin daga hagu zuwa dama, kuma idan ba'a dunkule su a wani wuri daya ba, hotonka shine mai bayyana daidai.

correct_exposure1 Jagorar Mai daukar hoto don Fahimtar Tarihin Tarihi Guest Bloggers Nasihan daukar hoto

Menene histogram ɗin “daidai” yake kama?

Babu wani abu mai mahimmanci na tarihi. Kamar yadda na fada a baya, jadawalin yana nuna muku dabi'un haske na dukkan pixels a hoton ku. Don haka yayin da na fada a baya babban tarin duhu pixels cikakken mulki nuna hoto da ba a bayyana ba, shi ba ko da yaushe nuna hoto da ba a nuna shi ba. Bari mu duba ainihin rayuwa. A zato ka dauki hoton wani rike da walƙiya.

sparkler Jagoran Mai daukar hoto don Fahimtar Tarihin Tarihi Guest Bloggers Photography Tips

 

Tarihin tarihi don hoton da ya gabata yana kama da wannan:

sparkler_histogram Jagorar Mai daukar hoto don Fahimtar Tarihin Tarihi Guest Bloggers Nasihun daukar hoto

Yawancin pixels a cikin wannan hoton suna da duhu, wanda ke nufin cewa histogram ɗin yana nuna ƙwanƙwasa a gefen hagu na tarihin. Babban tari na pixels mai duhu? Kuna fare. Ba a bayyana ba? Ba don kallon da ake so ba na wannan hoton na musamman. Limituntatawa iri ɗaya ta amfani da histogram na iya faruwa a rana mai haske, musamman tare da yanayi kamar dusar ƙanƙara.

 

Me yasa zan yi amfani da histogram?

Wasu daga cikinku na iya yin tunani,Me yasa nake buƙatar damuwa da histogram? Ba zan iya faɗi kawai ta hanyar saka idanu na LCD a bayan allon ba idan na sami bayyanuwa daidai? " Da kyau, wani lokacin yanayin harbinku ba mai kyau bane. Haske mai haske ko haske mai ƙarancin haske zai sa ya wuya a ga duban ɗan hoto a baya. Kuma - wataƙila wannan ni ne kawai — amma kun taɓa kallon hoto a bayan kyamararku kuma kuna zaton kun ƙusarwa, amma sai kuka loda shi kuma ba ya da zafi sosai a kan babban allon?

A'a? Wannan kawai ni? Ok… motsawa sannan.

Tabbas, kuna iya daidaita fitarwa a cikin software mai gyaran hoto, kamar Photoshop ko Abubuwan. Amma ba shine mafi kyawun ɗaukar hoto daidai a kyamara ba? Aauke ido a kan hoton hotonku yayin da kuke harbi na iya taimaka muku gano idan kuna da damar gyara hotonku yayin da kuke harbi.

 

Me game yankan hoto da fitar da karin bayanai?

A'a, sashe mai zuwa ba game da salon kwalliya bane; shi ne har yanzu game da histogram. Alkawari.

Wasunku na iya saita kyamarar ku don haka LCD ta lumshe ido don yi muku gargaɗi idan kun cika bayyana abubuwan da kuka zana. Idan kana da wannan fasalin a kyamarar ka, ba ni da shakkar cewa a kalla lokaci guda a rayuwar ka ka kalli bayan kyamararka ka ga cewa sama a cikin hoton da ka harba yana kiftawa da ido.

Me yasa yake yin hakan?!

Kamarar ka kawai zata iya ɗaukar daki-daki cikin tsaka-tsakin yanayi zuwa sautunan haske. Wannan yana nufin idan wani ɓangare na hotonku yana da sautin da yake waje da kewayon da kyamararku zata iya ɗauka, firikwensin ba zai iya ɗaukar daki-daki a wannan ɓangaren hoton ba. Lumshe ido yana ƙoƙarin gaya muku, “Kai, duba! Yankin da ke walƙiya a cikin LCD ɗin ku ba zai sami cikakken bayani a ciki ba!"

Idan ka taɓa ɗaukar hoto kuma sama tana walƙiya a cikin damuwa, to saboda wannan yanki na hoton ka ya wuce gona da iri cewa firikwensin ya sanya shi a matsayin babban ɗamarar farin pixels mai haske. A cikin kalmomin fasaha, wannan yana nufin manyan abubuwan an “ange su” ko “ƙaho.” A cikin mahimman kalmomin da suka dace, yana nufin cewa komai abin da kuka yi a cikin software na gyaran hoto, kamar Photoshop, ba za ku taɓa samun damar fitar da daki-daki daga wannan ɓangaren hoton ba.

Yana da kyau idan an busa manyan abubuwan a cikin sama na dangin ku a hoto a bakin rairayin rana. Ba mai girma bane, kodayake, idan aka busa manyan abubuwa kuma aka rasa dalla-dalla akan rigar bikin auren amarya.

Maimakon dogaro da ƙyaftawar ido, haka nan zaka iya amfani da tarihin ka don ganin ko akwai wani yankan abu. Idan kana da katon pixels na launuka masu haske waɗanda aka tara sama zuwa gefen dama na tarihin, za a datse abubuwan da ke cikin abubuwan da ka zana, a busa su, kuma su ɓace gaba ɗaya.

 

Launi fa?

Har zuwa yanzu, muna tattaunawa game da tarihin haske. Tun da farko na tambaye ku kuyi tunanin cewa kun ɗauki kowane pixel daga hoton ku na dijital kuma kun tsara su cikin tsaka-tsalle, kuna raba su da duhunsu ko yadda haske suke. Ungiyoyin sun kasance haɗuwa da dukan launuka a cikin hotonku.

Yawancin kyamarorin dijital da yawa suna ba da tarihin tarihi uku don nuna muku matakin launi na kowane tashar launi RGB (Red, Green, and Blue). Kuma - kamar dai yadda hasken haske yake a tarihi - Jar, Kore, ko shudi mai nuna launin fata yana nuna muku yanayin launin launi daban-daban a cikin hoton.

red_channel Jagoran Mai daukar hoto don Fahimtar Tarihin Tarihi Guest Bloggers Photography Tipsgreen_histogram Jagorar Mai ɗaukar hoto don Fahimtar Tarihin Tarihi Guest Bloggers Photography Tipsblue Jagoran Mai ɗaukar hoto don Fahimtar Tarihin Tarihi Guest Bloggers Shawarwarin ɗaukar hotoMisali, idan ka kalli Red histogram zai nuna maka hasken jan fayel din ne kawai a cikin hoton. Don haka idan kuna da katon pixels a gefen hagu na Red histogram, yana nufin jan fayel din suna da duhu kuma basu da shahara sosai a hoton. Idan kana da babban tari na pixels a gefen dama na Red histogram, jan pixels suna da haske da yawa a cikin hoton, wanda ke nufin launin zai yi yawa sosai kuma ba zai sami cikakken bayani ba.

Me ya sa ya kamata mu kula?

A ce ka dauki hoton wani wanda ke sanye da jar riga. Ka yi tunanin jar ja tana haske sosai. Kuna kallon tarihin haske gabaɗaya kuma ba ze bayyana kima ba. Sannan za ka kalli Red histogram ka ga babban tari na pixels dinda aka tara har zuwa bangaren dama na jadawalin. Za ku san cewa hoton zai rasa duk yanayin zane a cikin kowane abu ja a hotonku. Wanan jan rigar na iya zama kamar babban jan launi a hotonki, wanda ke nufin cewa komai abin da kuka yi a Photoshop, ba za ku iya cire kowane irin bayani daga wannan jan rigar ba.

Kallon bayanan tarihin ku zai taimaka muku wurin tantancewa idan kuna buƙatar gyara saitunan ku don kiyaye rigar daga yin kama da babban jan ja.

 

A takaice…

Tarihin tarihin-kamar sauran bangarorin daukar hoto-yana ba da damar ka don tantance abin da ya dace da nau'in hoton da kuke ƙoƙarin ɗaukarwa. A lokaci na gaba da za ka yi harbi, ka kalli tarihin hoton ka don ganin ko kana da dakin da za ka iya yin gyara a saitunan ka yayin harbi. Histogram kuma suna da amfani wajen sarrafa post yayin amfani daban-daban matakan daidaitawa.

Maggie marubuci ne mai fasaha wanda yake ɗaukar hoto a baya Maggie Wendel Hoto. An kafa ta ne a cikin Dajin Wake, NC, Maggie ta ƙware a cikin hotunan sabbin jarirai, jarirai, da yara.

Ayyukan MCPA

No Comments

  1. Danica a kan Yuni 20, 2011 a 11: 35 am

    Babban labarin, Maggie! Tsammani zan juya na "ƙyaftawar ido" zaɓi on

  2. Saratu Nicole a kan Yuni 20, 2011 a 11: 39 am

    Wow na gode da bayanin wannan. Kullum nakanyi mamakin irin bayanin da nake rasa ta hanyar rashin sanin menene “hoton da ke neman dutsen” akan nuni na. Yanzu haka ina dauke da wani kayan aiki da zai taimaka min wajen samun harbin da nake tsammani a kaina. Na gode da ba da lokacinku don “yi wauta” wata ma'anar kalmar fasaha ta hikima.

  3. Monica a kan Yuni 20, 2011 a 12: 48 pm

    Godiya ga bayani! Na koyi abubuwa da yawa karanta wannan labarin!

  4. Barbara a kan Yuni 20, 2011 a 1: 01 pm

    Na gode sosai da rubuta wannan. Sau da yawa nakan yi mamakin tarihin, amma har yanzu ban taɓa fahimtar sa ba. Ka bayyana shi sosai - Ina tsammanin na fahimce shi a yanzu!

  5. Tara Kieninger a kan Yuni 20, 2011 a 8: 38 pm

    Ina kawai son yadda kuke shirye ku raba duk ilimin ku tare da mu duka. Na koya sosai daga gare ku! Godiya!

  6. ShaBean a kan Yuni 21, 2011 a 12: 26 am

    Lafiya, kawai na sami babban lokacin “OOOOOooooo” a nan. Na sami wannan gaba ɗaya! Wannan labari ne mai kayatarwa kuma mai dacewa a wurina !! Kuna da kyau! Na gode!

  7. Launin masana a kan Yuni 21, 2011 a 2: 15 am

    madalla! hakika kyakkyawan aiki ne! godiya mai yawa don rabawa ..

  8. Shellie a kan Yuni 21, 2011 a 6: 18 am

    Na gode Maggie don babban labarin. Duk da yake na san ainihin abin da nake kallo yana da kyau a karanta shi a sauƙaƙe, sauƙin fahimtar sharudda Kuma shi ne karo na farko da na karanta game da tarihin tarihi, launuka kawai suna faɗar haske.

  9. Tom a kan Yuni 21, 2011 a 6: 39 am

    Kyakkyawan labari akan tarihin tarihi, ba karanta irin wannan labarin ba, anan duk abin da aka bayyana da gaskiya, yawancin godiya ..

  10. Suzanne a kan Yuni 21, 2011 a 11: 59 am

    Na gode! Na taba bayyana tarihin tarihi a gabana, amma har yanzu ban samu ba. Yarenku da sauƙin bayani sun kasance cikakke.

  11. Melinda a kan Yuni 21, 2011 a 1: 54 pm

    Babban bayani. Yanzu kawai ina bukatar sanin menene saitunan da nake buƙatar amfani dasu don ɗaukar hoto mai ƙyalli kamar wannan !!!

  12. Vicki Nieto a kan Yuni 21, 2011 a 2: 15 pm

    Aunar wannan sakon!

  13. Alex a kan Yuni 22, 2011 a 1: 44 am

    Ina godiya da wannan jagorar, godiya ga rabawa!

  14. Donna a kan Yuli 17, 2011 a 8: 01 am

    Na karanta littattafai da yawa da kuma labarin fasaha kan yadda zan fassara da amfani da tarihin tarihi don ƙidaya, kuma har yanzu ban fahimta ba sosai. Wannan shine mafi sauki, sauki da sauƙin amfani da bayanin da na karanta. Na gode da raba fahimtarwarku - musamman game da ra'ayin cewa mafi kyawun fallasa abu ne mai nasara ga hoton kuma ba lallai bane ya zama "daidai."

  15. Linda Deal a kan Satumba 3, 2011 a 8: 21 am

    Oh-hh! Yanzu na samu. Na gode da bayanin da kuka yi don ko a yanzu ma zan iya fahimtar abin da tsarin tarihin yake fada min.

  16. Kimberly a kan Oktoba 13, 2011 a 1: 36 pm

    Ina godiya da sauƙi mai sauƙi don bin umarnin da kuka ba kan yadda ake "karanta" tarihin. A gaskiya na fahimci yanayin haske, amma ba launi ba. Na gode!

  17. Heather! a ranar Disamba na 5, 2011 a 2: 49 a ranar

    Na gode! Wannan hakika yana taimaka min; Ban taba sanin abin da kwayar tarihin take kokarin fada min ba! Kuma yanzu na sani. :) Af, Ina saran wannan rubutun!

  18. Alice C a kan Janairu 24, 2012 a 3: 37 pm

    Godiya! Nakan manta koyaushe in kalli tarihin tarihina color har sai na dawo gida kuma na fahimci na busa kaho!

  19. myles ranar 29 na 2012, 12 a 19: XNUMX am

    Na gode wannan yana da kyau. Nayi karatun sosai dan kokarin fahimtar tarihi kuma basu taba bayanin sa ba kawai. Wannan babban taimako ne.

  20. Kira Kryzak a ranar 30 na 2012, 5 a 35: XNUMX am

    Sannu a can, Ina tsammanin zaku iya sha'awar sanin hakan wani lokacin da zarar na kalli gidan yanar gizon ku sai na sami kuskuren karɓar baƙi 500. Na yi imani za ku iya sha'awar. Kula

  21. Cindy a kan Mayu 16, 2012 a 9: 42 pm

    Na gode sosai Ina matukar bukatar wannan! 🙂

  22. Trish a kan Satumba 3, 2012 a 12: 53 pm

    Wannan babu shakka yana bayanin yadda ake karanta histogram amma kuna da labarin da zan iya koyan abin da zan yi don gyara wuraren da aka busa bayan na ga sun fito akan histogram? Misali yayin harbi zuwa rana kuma yakamata in fallasa fatar mai taken (gwargwadon hanyoyin Killer 5 da za a harba cikin Rana da Samun Kyawawan Fitila). Ina so in karanta game da hakan !! Na gode!

  23. Steve Jones ranar 1 na 2013, 11 a 03: XNUMX am

    Amma a zahiri ina ganin cewa hoton yarinyar da Sparkler yayi daidai…. Babu wani asali & zai kama ta da cikakkiyar hasken mai walƙiya… ..idan 'yata ce zan sami wannan hoton da an busa & Firam 🙂

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