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Hoʻāʻo RED V-RAPTOR 8K VV Lab: Paʻa Paʻa, Lae Dynamic a me Latitu.

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Ua lōʻihi ka manawa mai ka hōʻike ʻana o ka pahu pahu RED hope loa ma CineD HQ, akā eia hou, me ka RED V-RAPTOR 8K VV ma ko mākou mau lima. Makemake au e ho'āʻo iā ia ma kā mākou mau hoʻokolohua lab maʻamau. ʻIke pū kekahi? A laila heluhelu ma…
Nui ka poʻe heluhelu i nīnau mai iā mākou inā loaʻa iā mākou ka manawa e hoʻāʻo ai i ka pahu pahu RED V-RAPTOR 8K i kā mākou lab, ʻoi aku ka nui ma hope o kā mākou hoʻāʻo ʻana i ka ARRI ALEXA 35 hou (hōʻike lab ma aneʻi).
Loaʻa i ka RED V-RAPTOR nā hiʻohiʻona kupaianaha me ka 35.4MP (40.96 x 21.60mm) piha piha CMOS sensor, 8K@120fps a me kahi 17+ i koi ʻia o ka dynamic range.
He mea kupanaha ia, akā, e like me kā mākou e ʻike ai, ʻaʻohe paʻa paʻa no ka hoʻāʻo ʻana i ke ʻano ikaika o nā kiʻi neʻe (e ʻike i kā mākou ʻatikala a pehea mākou e hana ai ma aneʻi) - no laila ua hana mākou i kahi hōʻike lab CineD maʻamau e ʻike ʻole i ka mea a ka mea hana. !
No laila, e noʻonoʻo kākou - kūpono ke heluhelu ʻana i ka ʻatikala ma mua o ka nānā ʻana i ke wikiō, akā aia kēia iā ʻoe;-) .
Ma mua o ka hoʻomaka ʻana, hoʻomaha mākou i ke kāmela no 20 mau minuke, a laila malu (calibrate) i ka mea ʻike me ka pani ʻana o ka pāpale lens (ʻo 1.2.7 ka firmware pahu pahu o kēia manawa). E like me ka mea maʻamau, ua kōkua hou koʻu hoa aloha ʻo Florian Milz iaʻu i kēia hoʻokolohua lab - mahalo!
Ke hoʻohana nei i kā mākou ʻano ana ʻana o ka rolling shutter maʻamau me kā mākou strobes, loaʻa iā mākou kahi 8ms paʻa (ʻoi aku ka maikaʻi o ka liʻiliʻi) i ka heluhelu piha piha 8K 17:9 DCI. E manaʻo ʻia kēia, inā ʻaʻole hiki ke 120fps ma 8K. ʻO kēia kekahi o nā hopena maikaʻi loa a mākou i hoʻāʻo ai, ʻo Sony VENICE 2 wale nō ka haʻahaʻa haʻahaʻa o 3ms (no ka laʻana, ʻo ka ARRI ALEXA Mini LF he 7.4ms, hoʻāʻo ʻia ma aneʻi).
Ma ke ʻano 6K Super 35, hoʻemi ʻia ka manawa pani pani i 6ms, hiki iā ʻoe ke pana ma 160fps ma kēia hoʻonā. He mau kumu waiwai keia.
E like me ka mea maʻamau, ua hoʻohana mākou i ka pakuhi DSC Labs Xyla 21 e hoʻāʻo ai i ka laulā ikaika. ʻAʻohe ISO ʻōiwi i wehewehe ʻia e RED V-RAPTOR, hiki ke hoʻonohonoho ʻia ʻo REDCODE RAW ISO e hoʻouna.
Ke noʻonoʻo nei paha ʻoe i ka mea e hana nei ma ʻaneʻi? No ke aha ʻaʻole wau i hoʻomaka i ka helu ʻana i nā kikowaena e like me ka maʻamau a nānā ʻole i ka lua o ke kikowaena mai ka hema? ʻAe, ʻo ka lua o ka hoʻomaha ʻana mai ka ʻaoʻao hema i kūkulu hou ʻia mai nā kahawai RGB i kālai ʻia, ʻo ia ka "Highlight Recovery" i kūkulu ʻia i loko o ka pipeline RED IPP2 ma ke ʻano maʻamau.
Inā hoʻonui ʻoe i nā kahawai RGB o ka nalu, hiki iā ʻoe ke ʻike i ka mea e hiki mai ana - ʻo ka lua o ka hoʻomaha (i hōʻike ʻia e ka pōʻai ʻulaʻula) ʻaʻole hōʻike i ka ʻike kala RGB.
ʻO ke kolu wale nō ke kikowaena mai ka ʻaoʻao hema i loaʻa nā kaha 3 RGB āpau, akā aia ke kahawai ʻulaʻula ma ka paepae ʻoki. No laila, helu mākou i nā pani o ka dynamic range mai ke kolu o ka pā.
No laila me kā mākou kaʻina hana maʻamau (e like me nā kāmera āpau) hiki iā mākou ke piʻi ma kahi o 13 mau pani ma luna o ka pae walaʻau. He hopena maikaʻi loa kēia - ke hoʻohālikelike ʻia me ka ARRI ALEXA Mini LF (ka hoʻāʻo lab ma aneʻi) hoʻokahi wale nō ʻanuʻu kiʻekiʻe (ALEXA 35 he 3 ʻanuʻu ke kiʻekiʻe). ʻO nā kāmeʻa mea hoʻohana piha piha maikaʻi loa ma kahi o 12 mau pani e ʻike i nā mea āpau.
I kēia manawa, noʻonoʻo paha ʻoe no ke aha i helu ʻole ai au i kēia hoʻomaha "hoʻōla"? ʻO ka pane ʻo ia ka nele i nā ʻike kala āpau. ʻIke ʻia nā hopena ma aneʻi inā ʻoe e kaomi i lalo i nā hopena latitude.
Ke nānā nei i nā helu IMATEST, ʻo kēia hoʻihoʻi kiʻekiʻe maʻamau e hoʻohuli i nā hopena no ka mea ʻo IMATEST hoʻi e helu i nā pani ʻaʻole i ʻoki ʻia akā hoʻihoʻi ʻia. No laila, hōʻike ʻo IMATEST i 13.4 kū ma SNR = 2 a me 14.9 kū ma SNR = 1.
Pili ka mea like i ka piha piha 4K ProRes 4444 XQ. ʻO ka mea hoihoi loa, ua like loa nā hualoaʻa IMATEST ma ISO800: 13.4 kū ma SNR = 2 a me 14.7 kū ma SNR = 1. Ua manaʻo wau e hoʻohaʻahaʻa i ka pahupaʻikiʻi e hoʻomaikaʻi i nā hopena o ka laulā.
No ka hōʻoia ʻana, ua hōʻemi au i ka 8K R3D i 4K ma DaVinci Resolve 18, a eia wau i loaʻa nā waiwai maikaʻi loa: 13.7 kū ma SNR = 2 a me 15.1 kū ma SNR = 1.
ʻO kā mākou hōʻailona o kēia manawa no ka laulā piha piha ʻo ka ARRI ALEXA Mini LF me 13.5 kū i SNR = 2 a me 14.7 kū ma SNR = 1 me ka hoʻihoʻi ʻole ʻana. Ua loaʻa iā ARRI ALEXA 35 (Super 35 sensor) i ka 15.1 a me 16.3 i ka SNR = 2 a me 1 i kēlā me kēia (hou me ka ʻole o ka hoʻihoʻi māmā).
I ka nānā ʻana i nā ʻano nalu a me nā hopena IMATEST, manaʻo wau he 1 ka hoʻomaha ʻana o ka RED V-RAPTOR ma mua o nā kāmeʻa kiʻi piha piha. ʻO ka ALEXA Mini LF he 1 hoʻomaha ʻoi aku ka ikaika ma mua o ka RED V-RAPTOR, aʻo ka ALEXA 35 he 3 mau pani hou aku.
Manaʻo ʻaoʻao: Me nā kāmela Blackmagic ma BRAW, hiki iā ʻoe ke koho i ke koho "Highlight Recovery" ma ka pou (ma DaVinci Resolve). Ua holo au i kahi ho'āʻo me kaʻu BMPCC 6K a eia ka koho "Highlight Recovery" i loaʻa ai ka helu IMATEST ma kahi o 1 hoʻokiʻekiʻe me SNR=2 a me SNR=1 ma mua o ka ʻole HLR.
Eia hou, ua pana ʻia nā mea āpau ma REDCODE RAW HQ ma ISO 800 me ka hoʻohana ʻana i nā hoʻonohonoho hoʻomohala DaVinci Resolve (Full Res Premium) i hōʻike ʻia ma luna.
ʻO ka Latitude ka hiki i ke kāmela ke mālama i nā kikoʻī a me ke kala i ka wā i ʻike nui ʻia a i ʻole underexposed a hoʻi i ka ʻike kumu. I kekahi manawa i hala aku nei, ua koho mākou i ka waiwai ʻālohilohi o 60% (ma ka nalu) no ke alo o kahi mea (ʻoi aku ka pololei, he lae) i kahi hiʻohiʻona studio maʻamau. Pono kēia ʻike CineD maʻamau e kōkua i kā mākou poʻe heluhelu e loaʻa kahi kikoʻī no nā kāmela āpau i hoʻāʻo ʻia, ʻaʻole pehea lākou e hāʻawi ai i nā helu code a i ʻole ke ʻano LOG a lākou e hoʻohana ai. He mea hoihoi loa ka like ana o ALEXA Mini LF e pili ana i ke kiko kuhikuhi kumu o ka waiwai olinolino o 60% (ʻo ia ka latitu 5 ku ma luna a me 5 ku ma lalo o keia wahi).
No ka V-RAPTOR, ua wela mua ka 60% hoʻonohonoho ʻālohilohi, a aia he 2 mau hoʻomaha hou i nā mea koʻikoʻi ma mua o ka hoʻomaka ʻana o ke kahawai ʻulaʻula ma ka lae o kuʻu hoa aloha ʻo Nino.
Inā mākou e hoʻonui i ka ʻike ma mua o kēia pae, e paʻi mākou i ka wahi hoʻomaha hou (ʻo ia ka lua o ka hoʻomaha mai ka hema i ka nalu ma luna):
Hiki iā ʻoe ke ʻike ma ke kiʻi ma luna ua nalowale nā ​​​​ʻike kala a pau ma ka lae o Nino (a me ka maka), akā ʻike mau ʻia kekahi mau kikoʻī kiʻi - ʻo ia ka mea e hana ai i ka hoʻōla.
Maikaʻi kēia no ka mea mālama ʻo ia i nā kikoʻī i nā kiʻi overexposed i kekahi ʻano. Hiki iā ʻoe ke hoʻomaopopo maʻalahi iā ia me nā hāmeʻa hoʻolaha kukui uila RED ʻoiai lākou e hōʻike ana i nā waiwai sensor RAW.
Ma ka laʻana ma luna, inā e hoʻonui ʻia ka ʻike ma mua o 2 mau pani o ke kiʻi i hoʻonui ʻia, e hōʻike ana nā kukui uila RED e hoʻomaka ana ke kahawai ʻulaʻula e ʻoki ʻia (e like me ka hōʻailona RGB).
I kēia manawa, e nānā kākou i ka underexposure. Ma ka hoʻokuʻu ʻana i ka aperture i lalo i f/8 a laila hoʻohaʻahaʻa i ke kihi pani i 90, 45, 22.5 degere (etc) loaʻa iā mākou kahi kiʻi maikaʻi loa a maʻemaʻe hoʻi me 6 mau pani o ka underexposure (ma lalo o kā mākou kumu kumu) kekahi leo koʻikoʻi:
Ua paʻi mākou i 8 mau pani o ka latitu hōʻike, ʻo ka hapa nui loa e loaʻa iā mākou mai kahi pahupaʻi kiʻi kiʻi piha. ʻAe, ʻo ka Sony VENICE 2 i paʻi i ka palena hoʻonā maoli o 8.6K (me ka hoʻohana ʻana i ka codec X-OCN XT). Ma ke ala, ʻo ka pahu kiʻi mea kūʻai wale nō e hiki ke hoʻokokoke kokoke i 9 mau pani ʻo FUJIFILM X-H2S.
Mālama ka hoʻohaʻahaʻa walaʻau i kēia kiʻi, ʻoiai ua hoʻopau mākou me kahi ʻulaʻula brownish-ʻulaʻula ikaika (ʻaʻole maʻalahi ke wehe):
Aia mākou ma nā pae 9 o ka latitu hoʻolaha! ʻO ka pahu paʻi kiʻi piha maikaʻi loa a hiki i kēia lā, ʻo ka ALEXA Mini LF e paʻa i kahi paʻa 10 paʻa. No laila e ʻike inā hiki iā mākou ke hoʻokō i kēia me ka RED V-RAPTOR:
I kēia manawa, me ka hoʻohaʻahaʻa leo ikaika, hiki iā mākou ke ʻike i ka hoʻomaka ʻana o ke kiʻi e hāʻule - loaʻa iā mākou kahi kala ikaika loa, a ma nā wahi ʻeleʻele o ke kiʻi, ua luku ʻia nā kikoʻī a pau:
Eia nō naʻe, maikaʻi nō naʻe ke nānā aku, ʻoiai ʻoiai ua puʻunaue ʻia ka walaʻau - akā e hoʻoponopono iā ʻoe iho.
Lawe kēia iā mākou i ka hopena: kahi latitu hōʻike paʻa 9-stop me kahi lumi wiggle a hiki i 10 pani.
No ka latitude o kēia manawa, hōʻike ka ARRI ALEXA 35 i 12 mau pani o ka latitu hōʻike ma kā mākou CineD studio kiʻi maʻamau - 3 pani hou aʻe, hiki ke ʻike ʻia ma nā ʻano nalu kamera a me nā hopena IMATEST (eia nā hoʻokolohua lab).
ʻAʻole wale ka RED V-RAPTOR e hāʻawi i ka hana kupaianaha, ua hōʻike pū kekahi i ka hana kiʻekiʻe i kā mākou lab. ʻOi aku ka maikaʻi o nā waiwai pani pani (palekana no ke alakaʻi hui ʻo Sony VENICE 2), ikaika ka pae ikaika a me nā hopena latitude, ma kahi o 1 kū wale mai ka ARRI Alexa Mini LF - kā mākou kiʻi kiʻi kiʻiʻoniʻoni piha i kēia manawa.
Ua pana ʻoe me ka RED V-RAPTOR? He aha kāu ʻike? E haʻi mai iā mākou i kou mau manaʻo ma ka ʻatikala ma lalo!
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Makemake ʻoe e loaʻa i nā mea hou CineD maʻamau i nā nūhou, nā loiloi, pehea-tos, a me nā mea hou aku? E kau inoa i kā mākou nūpepa a e kōkua mākou iā ʻoe.
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Wehe i ke kau inoa ma ka loulou ma ka nūhou. Loaʻa i nā helu helu i mālama ʻia a hiki i kou wehe ʻana. E ʻike i ke Kulekele pilikino no nā kikoʻī.


Ka manawa hoʻouna: Dec-13-2022