Autofocus babu shakka fasalin kyamara ne mai matuƙar amfani a cikin mara madubi da wayoyin hannu. Yana tabbatar da cewa hotunanmu suna da kaifi har ma a ƙarƙashin yanayin da ba su da kyau kuma don haka yana ba da sakamako mai kyau sosai. Tare da ci gaban ci gaba, Dual Pixel autofocus yana samun shahara a cikin wayoyin hannu. Wannan fasahar tana yin alƙawarin mayar da hankali cikin sauri, misali lokacin ɗaukar hoto ko a cikin ƙananan haske. Amma ta yaya yake aiki?
Dual Pixel autofocus wani haɓaka ne na mai da hankali kan gano lokaci, aka PDAF, wanda aka nuna a cikin kyamarorin wayar hannu tsawon shekaru. Ainihin PDAF yana amfani da keɓaɓɓun pixels akan firikwensin hoton da ke kallon hagu da dama don ƙididdige ko hoton yana cikin mayar da hankali. A yau, masu amfani da yawa sun dogara da kayan aikin hoto na wayoyinsu ta yadda ba su mallaki kyamarar gargajiya ba. Yunwar manyan hotuna tana motsa masana'anta don ƙirƙira, don haka ko da fasahar PDAF autofocus ba ta tsaya tsayin daka ba kuma tana ci gaba da haɓakawa. Ƙarin wayoyin hannu na zamani sun fara amfani da su, a tsakanin sauran abubuwa, PDAF masu yawa, Duk Pixel mayar da hankali ko laser autofocus.
Kuna iya sha'awar
Kamar yadda aka riga aka nuna, magabacin Dual Pixel autofocus shine PDAF. Ƙarshen yana dogara ne akan hotuna daban-daban waɗanda aka ƙirƙira ta fuskokin hotunan hoto na hagu da dama waɗanda aka gina a cikin pixels na firikwensin hoton. Ta kwatanta bambancin lokaci tsakanin waɗannan pixels, ana ƙididdige nisa da ake buƙata. Fahimtar pixels yawanci suna lissafin kusan 5-10% na duk firikwensin firikwensin, kuma yin amfani da ƙarin ƙwazo na gano pixel nau'i-nau'i na iya ƙara dogaro da daidaito na PDAF.
Haɗin duk pixels firikwensin
Tare da Dual Pixel autofocus, duk pixels na firikwensin suna da hannu a cikin tsarin mayar da hankali, inda kowane pixel ya kasu kashi biyu photodiodes, daya yana kallon hagu da sauran zuwa dama. Wadannan sannan suna taimakawa wajen lissafin bambance-bambancen lokaci da sakamakon mayar da hankali, yana haifar da haɓaka daidaito da sauri idan aka kwatanta da daidaitaccen PDAF. Lokacin ɗaukar hoto ta amfani da Dual Pixel autofocus, mai sarrafawa yana fara nazarin bayanan mayar da hankali daga kowane photodiode kafin haɗawa da yin rikodin sigina a cikin sakamakon sakamakon.
Hoton firikwensin hoto na Samsung a sama yana nuna bambance-bambance tsakanin PDAF na gargajiya da fasaha ta Dual Pixel autofocus. Iyakar abin da ke faruwa na gaske shine aiwatar da waɗannan ƙananan photodiodes na gano lokaci-lokaci da microlenses, waɗanda kuma ke da hannu a cikin tsarin mayar da hankali, ba mai sauƙi ba ne kuma ba mai arha ba, wanda ya zama mahimmanci ga na'urori masu auna firikwensin gaske.
Misali na iya zama firikwensin 108Mpx a cikin ƙirar Galaxy S22 Ultra, wanda baya amfani da fasahar Dual Pixel, yayin da ƙananan kyamarorin 50Mpx a cikin ƙirar. Galaxy S22 ku Galaxy S22 Plus yana aiki. Tsarin autofocus na Ultra ya ɗan yi muni a sakamakon haka, amma kyamarori na biyu na wayar sun riga sun sami Dual Pixel autofocus.
Gidan hoton hoto
Kodayake fasahohin biyu sun raba tushe guda ɗaya, Dual Pixel ya fi PDAF girma cikin sauri da kuma mafi girman ikon kula da mayar da hankali kan batutuwa masu motsi da sauri. Za ku ji daɗin wannan musamman lokacin ɗaukar hotuna masu kyau, ba tare da la'akari da yanayin tsaro ba cewa kawai kuna buƙatar cire kyamarar da sauri kuma ku san cewa hotonku koyaushe zai kasance mai kaifi. Misali, Huawei P40 yana alfahari da lokutan mayar da hankali na millisecond godiya ga wannan fasaha.
Kuna iya sha'awar
Hakanan yana da mahimmanci a lura cewa Samsung yana ɗaukar Dual Pixel ɗin gaba kaɗan tare da Dual Pixel Pro, inda ake rarraba ɗayan photodiodes diagonally, wanda ke kawo ma fi girma da sauri da daidaito, godiya, a tsakanin sauran abubuwa, gaskiyar cewa ba dama da hagu kawai ba. fuskantarwa ya shiga tsarin mayar da hankali a nan, amma kuma yanayin matsayi na sama da kasa.
Ofaya daga cikin manyan gazawar PDAF shine ƙaramin aiki mai haske. Ganewar lokaci photodiodes rabin pixel ne, wanda ke sa amo ya yi wahala a samu daidaito informace o lokaci a cikin ƙananan haske. Sabanin haka, fasahar Dual Pixel ta fi magance wannan matsalar ta hanyar ɗaukar ƙarin bayanai daga dukkan firikwensin. Wannan yana kawar da hayaniya kuma yana ba da damar mayar da hankali cikin sauri ko da a cikin yanayi mai duhu. Hakanan akwai iyakoki anan, amma wannan tabbas shine babban haɓakawa ga tsarin mai da hankali a kai a halin yanzu.
Idan kuna da gaske game da daukar hoto ta wayar hannu, kyamara mai fasaha ta Dual Pixel autofocus za ta taimaka muku tabbatar da cewa hotunan ku koyaushe suna da kaifi, kuma tabbas yana da kyau a yi la'akari da kasancewarta ko rashi lokacin zabar kayan aikin kyamarar wayarku.
Mafi muni? Dubi abin da hotuna daga Plus suke da kuma menene hotuna daga Ultra. Na yi farin ciki da na kawar da ƙari. Hotuna sun gaji da kyama. Ultra komai cikakke. Kuna da labarin kuma game da shi….
Ko kuwa ba ku da cikakkiyar ido don ganin bambancin? Zai zama ra'ayi ;-)