I-Autofocus ngokungangabazeki iyisici sekhamera esiwusizo kakhulu kukho kokubili amafoni angenasibuko kanye namaselula. Iqinisekisa ukuthi izithombe zethu zicijile ngisho nangaphansi kwezimo ezikahle futhi ngaleyo ndlela inikeza imiphumela emihle kakhulu. Kanye nenqubekelaphambili yentuthuko, i-Dual Pixel autofocus ithola ukuduma kuma-smartphones. Lobu buchwepheshe buthembisa ukugxila okusheshayo, isibonelo uma uthatha amashothi noma ezindaweni ezinokukhanya okuphansi. Kodwa isebenza kanjani?
I-Dual Pixel autofocus iyisandiso sokugxila kokutholwa kwesigaba, i-PDAF, esifakwe kumakhamera omakhalekhukhwini iminyaka. I-PDAF ngokuyisisekelo isebenzisa amaphikseli azinikele kunzwa yesithombe abukeka kwesokunxele nakwesokudla ukuze ibale ukuthi isithombe sigxilile yini. Namuhla, abasebenzisi abaningi bathembele emishinini yezithombe yamafoni abo kangangokuthi abanayo ngisho nekhamera yakudala. Indlala yezithombe ezinhle ishukumisela abakhiqizi ukuthi basungule izinto ezintsha, ngakho-ke ngisho nobuchwepheshe be-PDAF autofocus abukami futhi buyaqhubeka buthuthuka. Ama-smartphones esimanje engeziwe aseqala ukusebenzisa, phakathi kwezinye izinto, i-PDAF eneziqondiso eziningi, i-All Pixel focusing noma i-laser autofocus.
Ungaba nentshisekelo ku
Njengoba sekushiwo, eyandulela i-Dual Pixel autofocus yi-PDAF. Lokhu kwakamuva kusekelwe ezithombeni ezihluke kancane ezidalwe ama-photodiode ambozwe kwesokunxele- nakwesokudla akhelwe kumaphikseli enzwa yesithombe. Ngokuqhathanisa umehluko wesigaba phakathi kwalawa maphikseli, ibanga lokugxila elidingekayo libe selibalwa. Amaphikseli okuthola isigaba ngokuvamile athatha cishe u-5-10% wawo wonke amaphikseli enzwa, futhi ukusebenzisa amapheya amaphikseli okuthola isigaba esizinikele kungakhuphula ukwethembeka nokunemba kwe-PDAF.
Ukuxhumana kwawo wonke amaphikseli enzwa
Nge-Dual Pixel autofocus, wonke amaphikseli enzwa abandakanyeka enqubweni yokugxila, lapho iphikseli ngayinye ihlukaniswa ngama-photodiode amabili, enye ibheke kwesokunxele bese enye ibheke kwesokudla. Lokhu bese kusiza ekubalweni komehluko wesigaba kanye nokugxila okuwumphumela, okuholela ekwandeni kokunemba nesivinini uma kuqhathaniswa ne-PDAF evamile. Lapho ithatha isithombe isebenzisa i-Dual Pixel autofocus, iphrosesa iqale ihlaziye idatha yokugxilisa ingqondo ku-photodiode ngayinye ngaphambi kokuhlanganisa nokuqopha amasignali esithombeni esiwumphumela.
Umdwebo wenzwa yesithombe ye-Samsung ngenhla ubonisa umehluko phakathi kwe-PDAF evamile kanye nobuchwepheshe be-Dual Pixel autofocus. Okuwukuphela kobubi bangempela ukuthi ukusebenzisa lawa ma-photodiode amancane okubona isigaba nama-microlens, nawo ahilelekile enqubweni yokugxilisa ingqondo, akulula noma kushibhile, okuba okubalulekile kuzinzwa ezinesinqumo esiphezulu kakhulu.
Isibonelo kungaba inzwa engu-108Mpx ngaphakathi kwemodeli Galaxy I-S22 Ultra, engasebenzisi ubuchwepheshe be-Dual Pixel, kuyilapho amakhamera anokulungiswa okuphansi okungu-50Mpx kumamodeli. Galaxy s22a Galaxy I-S22 Plus iyakwenza. I-autofocus ye-Ultra iba yimbi kakhulu ngenxa yalokho, kodwa amakhamera esibili ocingo asenayo kakade i-Dual Pixel autofocus.
Igalari yezithombe
Nakuba lobu buchwepheshe bubili buhlanganyela isisekelo esifanayo, i-Dual Pixel idlula i-PDAF ngokuya ngesivinini nekhono elikhulu lokugcina ukugxila ezifundweni ezihamba ngokushesha. Uzokujabulela lokhu ikakhulukazi uma uthwebula amashothi wesenzo aphelele, kungakhathaliseki ukuthi uzizwa uphephile kangakanani okudingayo kuphela ukukhipha ikhamera ngokushesha futhi wazi ukuthi isithombe sakho sizohlala sibukhali. Isibonelo, iHuawei P40 iziqhayisa izikhathi zokugxila kwe-millisecond ngenxa yalobu buchwepheshe.
Ungaba nentshisekelo ku
Kuyaphawuleka futhi ukuthi i-Samsung ithatha i-Dual Pixel iqhubekela phambili kancane ne-Dual Pixel Pro, lapho ama-photodiodes ngamanye ahlukaniswa ngokulinganayo, okuletha isivinini esikhulu nakakhulu nokunemba, ngiyabonga, phakathi kwezinye izinto, eqinisweni lokuthi hhayi kuphela kwesokudla nakwesokunxele. umumo ufaka inqubo yokugxila lapha, kodwa futhi isici sokuma esiphezulu nesingezansi.
Enye yeziphambeko ezibaluleke kakhulu ze-PDAF ukusebenza kokukhanya okuphansi. Ama-photodiode okuthola isigaba anguhhafu wephikseli, okwenza umsindo ube nzima ukuthola onembile informace o isigaba ekukhanyeni okuphansi. Ngokuphambene, ubuchwepheshe be-Dual Pixel buxazulula kakhulu le nkinga ngokuthwebula idatha eyengeziwe kuyo yonke inzwa. Lokhu kushelela umsindo futhi kunika amandla i-autofocus esheshayo ngisho nasendaweni emnyama. Kukhona futhi imikhawulo lapha, kodwa lokhu cishe ukuthuthukiswa okukhulu kwesistimu ye-autofocus okwamanje.
Uma uzimisele ngokuthwebula izithombe zeselula, ikhamera enobuchwepheshe be-Dual Pixel autofocus izokusiza uqinisekise ukuthi izithombe zakho zihlala zibukhali, futhi kufanelekile ukucatshangelwa ubukhona noma ukungabikho kwayo lapho ukhetha okokusebenza kwekhamera yefoni yakho.
Okubi kakhulu huh? Bona ukuthi ziyini izithombe ezisuka ku-Plus nokuthi ziyini izithombe ze-Ultra. Ngiyajabula ukuthi ngiyekile ukuhlanganisa. Izithombe zifiphaze ukunengwa. Ultra yonke into iphelele. Unesihloko esimayelana naye futhi….
Noma ingabe awunalo iso eliphelele lokubona umehluko? Kuzoba umbono;-)