ʻO Autofocus he mea kānalua loa kahi hiʻohiʻona kamera maikaʻi loa i nā aniani ʻole a me nā kelepona paʻalima. E hōʻoia i ka ʻoi o kā mākou mau kiʻi ma lalo o nā kūlana kūpono a no laila hāʻawi i nā huahana maikaʻi loa. Me ka holomua o ka hoʻomohala ʻana, loaʻa ka Dual Pixel autofocus i ka kaulana i nā smartphones. Hoʻohiki kēia ʻenehana i ka ʻoi aku ka wikiwiki o ka nānā ʻana, no ka laʻana i ka wā e kiʻi ai i nā kiʻi hana a i ʻole ma nā wahi kukui haʻahaʻa. Akā pehea ka hana?
ʻO Dual Pixel autofocus kahi hoʻonui o ka nānā ʻana i ka phase-detection, aka PDAF, i hōʻike ʻia i nā kāmera kelepona no nā makahiki. Hoʻohana maʻamau ʻo PDAF i nā pika i hoʻolaʻa ʻia ma ka ʻike kiʻi e nānā hema a ʻākau e helu ai inā he kiʻi ke kiʻi. I kēia lā, nui nā mea hoʻohana e hilinaʻi nei i nā mea paʻi kiʻi o kā lākou kelepona a hiki ʻole iā lākou ke loaʻa i kahi kāmela maʻamau. ʻO ka pōloli no nā kiʻi maikaʻi e alakaʻi i nā mea hana e hana hou, no laila ʻaʻole i paʻa ka ʻenehana autofocus PDAF a hoʻomau i ka holomua. Ke hoʻomaka nei ka hoʻohana ʻana o nā kelepona hou hou, ma waena o nā mea ʻē aʻe, multi-directional PDAF, All Pixel focusing a i ʻole laser autofocus.
Hiki paha iā ʻoe ke hoihoi
E like me ka mea i hōʻike mua ʻia, ʻo ka mea mua o Dual Pixel autofocus ʻo PDAF. Hoʻokumu ʻia ka hope ma nā kiʻi ʻokoʻa liʻiliʻi i hana ʻia e nā photodiodes hema hema a ʻākau i kūkulu ʻia i loko o nā pika o ka mea ʻike kiʻi. Ma ka hoʻohālikelike ʻana i ka ʻokoʻa ma waena o kēia mau pika, e helu ʻia ka mamao e pono ai. Ma kahi o 5-10% o nā pikika ʻike ʻike a pau, a me ka hoʻohana ʻana i nā pālua ʻike ʻike ʻana i hoʻolaʻa ʻia hiki ke hoʻonui i ka hilinaʻi a me ka pololei o PDAF.
Hoʻohui ʻia o nā pika sensor a pau
Me Dual Pixel autofocus, pili nā pika a pau o ka sensor i ke kaʻina hana, kahi e māhele ʻia ai kēlā me kēia pixel i ʻelua photodiodes, nānā kekahi i ka hema a ʻo kekahi ma ka ʻākau. A laila kōkua kēia mau mea i ka helu ʻana i nā ʻokoʻa o ka pae a me ka hopena o ka nānā ʻana, e hoʻonui ai i ka pololei a me ka wikiwiki e hoʻohālikelike ʻia me PDAF maʻamau. Ke kiʻi ʻana i ke kiʻi me ka Dual Pixel autofocus, ʻike mua ka mea hana i ka ʻikepili kikoʻī mai kēlā me kēia photodiode ma mua o ka hoʻohui ʻana a me ka hoʻopaʻa ʻana i nā hōʻailona ma ke kiʻi hopena.
Hōʻike ka kiʻi kiʻi kiʻi kiʻi o Samsung ma luna nei i nā ʻokoʻa ma waena o ka PDAF kuʻuna a me ka ʻenehana autofocus Dual Pixel. ʻO ka haʻahaʻa maoli wale nō ʻo ka hoʻokō ʻana i kēia mau kiʻi kiʻi kiʻi kiʻi kiʻi liʻiliʻi a me nā microlenses, i komo pū i ke kaʻina hana, ʻaʻole maʻalahi a maʻalahi hoʻi, e lilo i mea nui no nā mea ʻike kiʻekiʻe.
ʻO kahi laʻana hiki ke ʻike i ka sensor 108Mpx i loko o ke kumu hoʻohālike Galaxy ʻO ka S22 Ultra, ʻaʻole ia e hoʻohana i ka ʻenehana Dual Pixel, aʻo nā kāmeʻa haʻahaʻa haʻahaʻa 50Mpx i nā hiʻohiʻona. Galaxy S22 i Galaxy Hana ʻia ka S22 Plus. ʻOi aku ka maikaʻi o ka autofocus o Ultra ma muli o ka hopena, akā ua loaʻa i nā kāmeʻa lua o ke kelepona kahi autofocus Dual Pixel.
Photogallery
ʻOiai ua hoʻokaʻawale nā ʻenehana ʻelua i kahi kumu maʻamau, ʻoi aku ka Dual Pixel i ka PDAF ma ke ʻano o ka wikiwiki a me ka hiki ke hoʻomau i ka nānā ʻana i nā kumuhana wikiwiki. Mahalo nui ʻoe i kēia ke kiʻi ʻana i nā kiʻi hana kūpono, me ka nānā ʻole i ka manaʻo palekana e pono wale ʻoe e huki koke i ka pahupaʻikiʻi a ʻike e ʻoi mau kāu kiʻi. No ka laʻana, hoʻohanohano ka Huawei P40 i nā manawa millisecond no ka nānā ʻana i kēia ʻenehana.
Hiki paha iā ʻoe ke hoihoi
He mea kūpono hoʻi e hoʻomaopopo i ka lawe ʻana o Samsung i ka Dual Pixel i kahi liʻiliʻi me ka Dual Pixel Pro, kahi i hoʻokaʻawale ʻia nā kiʻi kiʻi hoʻokahi i ka diagonally, kahi e lawe mai ai i ka wikiwiki a me ka pololei, mahalo, i waena o nā mea ʻē aʻe, i ka ʻoiaʻiʻo ʻaʻole wale ka ʻākau a me ka hema. komo ka orientation i ke kaʻina hana kikoʻī ma ʻaneʻi, akā ʻo ka ʻaoʻao kūlana luna a lalo.
ʻO kekahi o nā hemahema koʻikoʻi o PDAF ʻo ia ka hana haʻahaʻa haʻahaʻa. ʻO nā kiʻi kiʻi ʻike Phase he hapalua pixel, kahi e paʻakikī ai ka walaʻau i ka loaʻa ʻana o ka pololei informace o ka pae ma ka malamalama haahaa. ʻO ka ʻokoʻa, hoʻoponopono nui ka ʻenehana Dual Pixel i kēia pilikia ma ka hopu ʻana i nā ʻikepili hou aʻe mai ka sensor holoʻokoʻa. Hoʻomaʻamaʻa kēia i ka walaʻau a hiki i ka autofocus wikiwiki i loko o kahi pōʻeleʻele. Aia kekahi mau palena ma aneʻi, akā ʻo kēia paha ka hoʻomaikaʻi nui loa i ka ʻōnaehana autofocus i kēia manawa.
Inā ʻoe koʻikoʻi e pili ana i ke kiʻi paʻi kiʻi paʻi kiʻi, e kōkua ka pahupaʻikiʻi me Dual Pixel autofocus ʻenehana iā ʻoe e hōʻoia i ka ʻoi mau o kāu mau kiʻi, a he mea pono e noʻonoʻo i kona hele ʻana a i ʻole ke koho ʻana i nā mea paʻi kiʻi o kāu kelepona.
ʻOi aku ka hewa huh? E ʻike i nā kiʻi mai ka Plus a me nā kiʻi mai ka Ultra. Ua hauʻoli wau ua hoʻopau wau i ka hoʻohui. Ua pohihihi nā kiʻi. ʻO Ultra nā mea āpau. He ʻatikala hou kāu e pili ana iā ia….
A i ʻole ʻaʻohe ou maka kūpono e ʻike i ka ʻokoʻa? He manaʻo ia;-)