Autofocus mosakayika ndi gawo lothandiza kwambiri pamakamera onse opanda magalasi komanso mafoni am'manja. Zimatsimikizira kuti zithunzi zathu ndi zakuthwa ngakhale pansi pamikhalidwe yabwino ndipo motero zimapereka zotsatira zabwino kwambiri. Pamodzi ndi kupita patsogolo kwachitukuko, Dual Pixel autofocus ikukula kwambiri m'mafoni am'manja. Tekinoloje iyi imalonjeza kuyang'ana mwachangu kwambiri, mwachitsanzo pojambula zinthu kapena pamalo osawala kwambiri. Koma zimagwira ntchito bwanji?
Dual Pixel autofocus ndikuwonjezera kwa kuwunika kwa gawo, aka PDAF, yomwe yakhala ikuwonetsedwa mu makamera a smartphone kwa zaka zambiri. PDAF kwenikweni imagwiritsa ntchito ma pixel odzipatulira pa sensa ya chithunzi yomwe imayang'ana kumanzere ndi kumanja kuti iwerengere ngati chithunzicho chikuyang'ana. Masiku ano, ogwiritsa ntchito ambiri amadalira zida zazithunzi zamafoni awo kotero kuti alibe ngakhale kamera yapamwamba. Njala ya zithunzi zabwino imapangitsa opanga kupanga zatsopano, kotero ngakhale ukadaulo wa PDAF autofocus sunakhazikike ndipo ukupitilizabe kuchita bwino. Mafoni am'manja amakono akuyamba kugwiritsa ntchito, mwa zina, PDAF yamitundu yambiri, All Pixel focusing kapena laser autofocus.
Mutha kukhala ndi chidwi ndi
Monga tawonetsera kale, omwe adatsogolera Dual Pixel autofocus ndi PDAF. Zotsirizirazi zimatengera zithunzi zosiyana pang'ono zopangidwa ndi ma photodiode owoneka kumanzere ndi kumanja omwe amapangidwa mu ma pixel a sensa yazithunzi. Poyerekeza kusiyana kwa gawo pakati pa ma pixel awa, mtunda wofunikira wowunikira umawerengedwa. Ma pixel ozindikira gawo nthawi zambiri amakhala pafupifupi 5-10% ya ma pixel onse a sensor, ndipo kugwiritsa ntchito ma pixel odzipatulira odzipatulira kwambiri kumatha kukulitsa kudalirika komanso kulondola kwa PDAF.
Kugwirizana kwa ma pixel onse a sensor
Ndi Dual Pixel autofocus, ma pixel onse a sensa amatenga nawo gawo poyang'ana, pomwe pixel iliyonse imagawidwa kukhala ma photodiode awiri, imodzi ikuyang'ana kumanzere ndi ina kumanja. Izi zimathandizira kuwerengera kusiyana kwa magawo ndi zomwe zimatsatira, zomwe zimapangitsa kuti pakhale kulondola komanso kuthamanga poyerekeza ndi PDAF wamba. Pojambula chithunzi pogwiritsa ntchito Dual Pixel autofocus, purosesa imasanthula kaye zomwe zimachokera pazithunzi zilizonse musanaphatikize ndikujambulitsa ma sign omwe ali pachithunzichi.
Chithunzi cha sensor cha Samsung pamwambapa chikuwonetsa kusiyana pakati pa PDAF yachikhalidwe ndi ukadaulo wa Dual Pixel autofocus. Choyipa chokha ndichakuti kugwiritsa ntchito ma photodiode ang'onoang'ono ozindikira magawo ndi ma microlens, omwe amakhudzidwanso ndikuyang'ana, sikophweka kapena kutsika mtengo, komwe kumakhala kofunikira kwa masensa apamwamba kwambiri.
Chitsanzo chikhoza kukhala 108Mpx sensor mkati mwachitsanzo Galaxy S22 Ultra, yomwe sigwiritsa ntchito ukadaulo wa Dual Pixel, pomwe makamera otsika kwambiri a 50Mpx mumitundu. Galaxy S22 ndi Galaxy S22 Plus imatero. The Ultra's autofocus ndiyoipa pang'ono chifukwa chake, koma makamera achiwiri a foni ali kale ndi Dual Pixel autofocus.
Zithunzi
Ngakhale matekinoloje awiriwa ali ndi maziko ofanana, Dual Pixel imaposa PDAF potengera liwiro komanso kuthekera kwakukulu kopitilira kuyang'ana pamitu yomwe ikuyenda mwachangu. Mudzayamikira izi makamaka mukamajambula kuwombera koyenera, mosasamala kanthu kuti muli ndi chitetezo chotani chomwe mukufunikira kuti mutulutse kamera mwamsanga ndikudziwa kuti chithunzi chanu chidzakhala chakuthwa nthawi zonse. Mwachitsanzo, Huawei P40 imadzitamandira nthawi ya millisecond chifukwa chaukadaulo uwu.
Mutha kukhala ndi chidwi ndi
Ndizofunikiranso kudziwa kuti Samsung imatengera Dual Pixel patsogolo pang'ono ndi Dual Pixel Pro, pomwe ma photodiode amagawika mwa diagonally, zomwe zimabweretsa kuthamanga kwambiri komanso kulondola, zikomo, pakati pazinthu zina, kuti osati kumanja ndi kumanzere kokha. orientation imalowa m'ndondomeko yowunikira pano, komanso mawonekedwe apamwamba ndi pansi.
Chimodzi mwazolakwika zazikulu za PDAF ndikuwala kocheperako. Ma photodiode ozindikira magawo ndi theka la pixel, zomwe zimapangitsa kuti phokoso likhale lovuta kupeza lolondola informace o gawo mu kuwala kochepa. Mosiyana ndi izi, ukadaulo wa Dual Pixel umathetsa vutoli pojambula zambiri kuchokera pa sensa yonse. Izi zimachepetsa phokoso ndikupangitsa kuti autofocus ikhale yofulumira ngakhale pamalo amdima. Palinso malire pano, koma mwina ndiye kusintha kwakukulu kwa autofocus system pakadali pano.
Ngati mukufunadi kujambula pa foni yam'manja, kamera yokhala ndi ukadaulo wa Dual Pixel autofocus ikuthandizani kuonetsetsa kuti zithunzi zanu zimakhala zakuthwa nthawi zonse, ndipo ndikofunikira kulingalira kukhalapo kwake kapena kusakhalapo kwake posankha zida za kamera ya foni yanu.
Choyipa kwambiri? Onani zomwe zithunzi zochokera ku Plus ndi zomwe zithunzi zochokera ku Ultra zili. Ndine wokondwa kuti ndachotsa kuphatikiza. Zithunzi zosamveka kunyansidwa. Ultra zonse zili bwino. Muli ndi nkhani yokhudza iye….
Kapena mulibe diso langwiro kuti muone kusiyana kwake? Zikhala zowona;-)