Pave nenguva yakareba kubvira iyo yekupedzisira RED kamera yakaratidza kuCineD HQ, asi heino zvakare, neRED V-RAPTOR 8K VV mumaoko edu. Ndinoda kuzviyedza mune yedu standard lab bvunzo. Unodawo kuziva here? Wobva waverenga…
Vaverengi vazhinji vakatibvunza kana isu tine mukana wekuyedza iyo RED V-RAPTOR 8K kamera mune yedu lab, kunyanya mushure mekunge taedza iyo itsva ARRI ALEXA 35 (yedzo yerabhoritari pano).
Iyo RED V-RAPTOR ine zvinoshamisa specs ine 35.4MP (40.96 x 21.60mm) yakazara-frame CMOS sensor, 8K@120fps uye inonzi 17+ inomira yesimba rekuchinja.
Zvinonzwika zvinoshamisa, asi sekuziva kwedu tese, hapana chiyero chakatarwa chekuyedza iyo inoshanduka yemifananidzo inofamba (ona chinyorwa chedu uye maitirwo atinoita pano) - saka takagadzira yakajairwa CineD lab bvunzo kuti tisazive izvo mugadziri anoti. !
Saka, ngatizviongorore - zvine musoro kuverenga chinyorwa usati waona vhidhiyo, asi izvi zviri kwauri.
.
Tisati tatanga, tinorega kamera ichidziya kwemaminitsi makumi maviri, uye mumvuri (calibrate) sensor ine lens cap yakavharwa (yazvino kamera firmware ndeye 1.2.7). Semazuva ese, wandinoshanda naye mudikani Florian Milz akandibatsira zvakare nebvunzo iyi yerabhu - ndatenda!
Tichishandisa yedu yakajairwa rolling shutter yekuyera nzira nema strobes edu, tinowana yakasimba 8ms (zvishoma zviri nani) mune yakazara-frame 8K 17:9 DCI kuverenga. Izvi zvinofanirwa kutarisirwa, zvikasadaro 120fps pa8K ingadai isina kuitika. Iyi ndeimwe yemhedzisiro yakanakisa yatakaedza, iyo chete Sony VENICE 2 ine yakaderera rolling shutter ye3ms (semuenzaniso, iyo ARRI ALEXA Mini LF ine 7.4ms, yakaedzwa pano).
Mune 6K Super 35 modhi, rolling shutter nguva inoderedzwa kusvika 6ms, zvichikutendera kuti upfure pa160fps pachisarudzo ichi. Aya ndiwo maitiro ekirasi yekutanga.
Semazuva ese, takashandisa iyo DSC Labs Xyla 21 chati kuyedza iyo ine simba renji. RED V-RAPTOR haina yakatsanangurwa yekuzvarwa ISO, REDCODE RAW ISO inogona kusetwa kutumira.
Zvino unogona kunge uri kushamisika kuti chii chiri kuitika pano? Ko sei ndisina kutanga kuverenga zviteshi semazuva ese ndoshaya hanya nechiteshi chechipiri kubva kuruboshwe? Zvakanaka, kumira kwechipiri kubva kuruboshwe kunovakwazve kubva kune akachekwa eRGB chiteshi, inova "Highlight Recovery" yakavakirwa muRED IPP2 pombi nekusarudzika.
Kana iwe ukawedzera maRGB chiteshi cheiyo waveform, unogona kuona zvinoitika - chechipiri kumira (inoratidzwa nedenderedzwa dzvuku) hairatidze chero RGB ruzivo rwemavara.
Chechitatu chiteshi kubva kuruboshwe chine ese matatu eRGB chiteshi, asi chiteshi dzvuku chatove pachikumbaridzo chekucheka. Naizvozvo, tinoverenga kumira kweiyo dynamic range kubva pachigamba chechitatu.
Saka nemaitiro edu akajairwa (sezvakaita nemakamera ese) tinogona kukwira kusvika panosvika gumi nenhatu kumira pamusoro peiyo ruzha. Uyu mubairo wakanaka kwazvo - uchienzaniswa neARRI ALEXA Mini LF (bvunzo yelab pano) inhanho imwe chete yepamusoro (ALEXA 35 inhanho 3 kumusoro). Iwo akanakisa akazara-furemu yevatengi makamera kazhinji ane anenge gumi nemaviri anomira kuti aone kuburikidza nezvose.
Zvino, iwe unogona kunge uchishamisika kuti sei ndisina kuverenga iyi "kupora" kumira? Mhinduro ndeyokuti inoshaya ruzivo rwemavara ose. Zvazvinoreva pano zviri pachena kana ukakwenya pasi kune latitude mhinduro.
Tichitarisa maIMATEST maverengero, iyi yakasarudzika yekusimudzira kudzoreredza inotsveyamisa mibairo nekuti IMATEST inoverengerawo kumira kusina kuchekwa asi kudzoreredzwa. Saka, IMATEST inoratidza 13.4 inomira paSNR = 2 uye 14.9 inomira paSNR = 1.
Izvo zvinoshandawo kune yakazara-frame 4K ProRes 4444 XQ. Zvinofadza zvikuru, migumisiro yeIMATEST pa ISO800 yakafanana zvikuru: 13.4 inomira paSNR = 2 uye 14.7 inomira paSNR = 1. Ndaitarisira kuderera mukhamera kuti ndivandudze migumisiro yehuwandu hwemagetsi.
Nekusimbisa muchinjiko, ndakadzikawo pasi 8K R3D kusvika 4K muDaVinci Resolve 18, uye pano ndakawana zvakakosha zvakakosha: 13.7 inomira paSNR = 2 uye 15.1 inomira paSNR = 1.
Yedu yazvino benchmark yeakazara furemu inoshanduka siyana ndeye ARRI ALEXA Mini LF ine 13.5 inomira paSNR = 2 uye 14.7 inomira paSNR=1 isina kujeka kupora. ARRI ALEXA 35 (Super 35 sensor) yakawana 15.1 uye 16.3 inomira paSNR = 2 uye 1 zvakateerana (zvakare pasina kupora kupora).
Ndichitarisa masaisai uye IMATEST mhedzisiro, ndinofunga iyo RED V-RAPTOR ine 1 inomira ine simba renji kupfuura akanakisa mutengi akazara furemu kamera. Iyo ALEXA Mini LF ine 1 inomira yakawedzera simba renji kupfuura RED V-RAPTOR, nepo ALEXA 35 ine 3 inomira zvimwe.
Padivi pechiziviso: NeBlackmagic makamera muBRAW, unogona kusarudza iyo "Highlight Recovery" sarudzo mune positi (muDaVinci Resolve). Nguva pfupi yadarika ndakamhanyisa bvunzo neBMPCC 6K yangu uye pano iyo "Highlight Recovery" sarudzo yakakonzera IMATEST mamaki angangoita 1 kumira kumusoro neSNR=2 uye SNR=1 pane isina HLR.
Zvekare, zvese zvakapfurwa muREDCODE RAW HQ paISO 800 uchishandisa iyo DaVinci Resolve (Yakazara Res Premium) zvigadziriso zvinoratidzwa pamusoro.
Latitude kugona kwekamera kuchengetedza ruzivo uye ruvara kana yakafumurwa zvakanyanya kana isina kuratidzwa uye kudzokera kune base kuratidzwa. Imwe nguva yapfuura, takasarudza kupenya kusingaite kukosha kwe60% (mune waveform) yechiso chechinhu (chaizvo, huma) mune yakajairwa studio chiitiko. Izvi zvakakosha kuratidzwa kweCineD kunofanirwa kubatsira vaverengi vedu kuwana poindi yereferensi kune ese makamera akaedzwa, zvisinei kuti vanopa sei kodhi tsika kana kuti LOG modhi yavanoshandisa. Zvinonakidza chaizvo kuti ALEXA Mini LF inoenzanirana nezve base referensi poindi yekupenya kukosha kwe60% (iyo latitude 5 inomira pamusoro uye 5 inomira pazasi peiyi poindi).
Kune iyo V-RAPTOR, iyo 60% kupenya kurongedza kwatopisa, uye kune 2 kumwe kumbomira mune yakakwira chiteshi dzvuku pahuma yandinoshanda naye Nino atanga kutema:
Kana isu tikawedzera kuratidzwa kupfuura iyi chiyero, isu ticharova chaizvo nzvimbo yekumisa yekuvaka (inova yechipiri kumira kubva kuruboshwe mune waveform pamusoro):
Iwe unogona kuona mumufananidzo uri pamusoro kuti ruzivo rwese rweruvara pahuma yaNino (uye chiso) rwakarasika, asi imwe mufananidzo ichiri kuoneka - ndizvo zvinoita kupora kupora.
Izvi zvakanaka nekuti inochengetedza zvakadzama mumifananidzo yakafumurwa kusvika pamwero wakati. Unogona kuzvizivisa zviri nyore neRED traffic light exposure maturusi sezvavanoratidza RAW sensor values.
Mumuenzaniso uri pamusoro, kana kuratidzwa kuchiwedzerwa nekupfuura 2 kumira kwechifananidzo chakafumurwa, marobhoti eRED anoratidza kuti chiteshi dzvuku chave kutanga kuchekwa (senge chiratidzo cheRGB).
Ikozvino ngatitarisei underexposure. Nekudonhedza aperture pasi kusvika f/8 uyezve kudzikisa kona yekuvhara kusvika pa90, 45, 22.5 madhigirii (nezvimwewo) tinowana mufananidzo wakanaka uye wakachena uine 6 chete inomira yekusaratidzwa (pazasi penzvimbo yedu) ruzha rwakakomba:
Isu tinorova 8 kumira kweexposure latitude, zvakanyanya isu tinogona kuwana kubva kune yakazara-furemu yevatengi kamera. Zvakanaka, kunyangwe iyo Sony VENICE 2 yakarova iyo yemuno resolution muganho we8.6K (ichishandisa X-OCN XT codec). Nenzira, kusvika ikozvino iyo chete mutengi kamera inogona kusvika pedyo ne9 inomira ndiyo FUJIFILM X-H2S.
Kudzikiswa kweruzha kuchiri kuchengetedza mufananidzo uyu, kunyangwe isu tichizoguma takasimba yebrownish-pink tint (iyo isiri nyore kubvisa):
Isu tatova pa9 mazinga eexposure latitude! Iyo yakanakisa yakazara furemu kamera kusvika parizvino, iyo ALEXA Mini LF inorova yakasimba gumi inomira. Saka ngationei kana tichigona kuita izvi neRED V-RAPTOR:
Iye zvino, nekuderedza kwakasimba kweruzha, tinogona kuona kuti chifananidzo chinotanga kuparara - tinowana yakasimba kwazvo ruvara rwekukanda, uye munzvimbo dzakasviba dzechifananidzo, zvese zvakaparadzwa:
Zvisinei, ichiri kutaridzika zvakanaka zvinoshamisa, kunyanya sezvo ruzha rwakagoverwa zvishoma - asi zvitonge iwe pachako.
Izvi zvinotisvitsa kumagumo: yakasimba 9-stop exposure latitude ine imwe wiggle kamuri yakananga gumi inomira.
Kana iri yazvino latitude referensi, iyo ARRI ALEXA 35 inoratidza gumi nemaviri kumira kwekuratidzwa latitude mune yedu yakajairwa CineD studio chiitiko - 3 inomira zvakanyanya, iyo inogona zvakare kuoneka mumamera waveforms uye IMATEST mhedzisiro (heino bvunzo dzeLab).
Haisi chete iyo RED V-RAPTOR inopa kuita zvinokatyamadza, yakaratidzawo kuita kwepamusoro mulabhu yedu. Rolling shutter values ndiyo yakanakisa (yakachengeteka kumutungamiri weboka Sony VENICE 2), ine simba renji uye latitude mhedzisiro yakasimba, ingangoita 1 kumira kubva kuARRI Alexa Mini LF - yedu referensi yakazara-frame cinema kamera kusvika zvino.
Wakambopfura neRED V-RAPTOR here? Chii chakaitika kwauri? Tizivise pfungwa dzako muchikamu chemashoko pazasi!
Unogona kuzvibvisa chero nguva uchishandisa chinongedzo chekusanyoresa chinosanganisirwa netsamba yega yega. Kuti uwane rumwe ruzivo, ndapota ona yedu Yakavanzika Policy
Unoda kuwana nguva dzose CineD zvigadziriso panhau, wongororo, maitiro-tos, nezvimwe? Nyorera kune tsamba yedu uye isu tichakubatsira.
Unogona kuzvibvisa chero nguva uchishandisa chinongedzo chekusanyoresa chinosanganisirwa netsamba yega yega. Iyo data yakapihwa uye nhamba yekuvhurwa kwetsamba ichachengetwa zvichibva pane yako data kudzamara wabvisa. Kuti uwane rumwe ruzivo, ndapota ona yedu Yakavanzika Policy
Kunakidzwa nemikana mitsva yemakomputa kamera. Kwete mupfuri ane shungu anorarama nekuzviita. Ndichikwenya mazino angu nezvePanasonic GH nhevedzano, ndagara ndichida kuchengetedza giya rangu diki sezvinobvira panguva yekufamba kwangu kutenderera pasirese kwandakaita firimu kutaura nyaya yekuzvivaraidza.
Unoda kuwana nguva dzose CineD zvigadziriso panhau, wongororo, maitiro-tos, nezvimwe? Nyorera kune tsamba yedu uye isu tichakubatsira.
Unogona kuzvibvisa chero nguva uchishandisa chinongedzo chekusanyoresa chinosanganisirwa netsamba yega yega. Iyo data yakapihwa uye nhamba yekuvhurwa kwetsamba ichachengetwa zvichibva pane yako data kudzamara wabvisa. Kuti uwane rumwe ruzivo, ndapota ona yedu Yakavanzika Policy
Bvisa kunyoresa kuburikidza neiyi link iri mutsamba yenhau. Inosanganisira nhamba dzakachengetwa kusvikira wabvisa kunyoresa. Ona iyo Privacy Policy kuti uwane ruzivo.
Nguva yekutumira: Zvita-13-2022