Yog hais tias koj tab tom mus rau embark ntawm kev yuav khoom tshiab TV lossis video projector thiab koj tsis tau mus nyob rau ob peb lub xyoos, tej yam yuav yog ntau ruam tag ntawd puas tau. Txawm hais tias koj saib hauv online los yog ntawv tshaj tawm, los yog mus rau koj lub zos neeg yug qaib ntxhw, muaj ntau cov ntsiab lus tshiab uas tau muab pov tseg, tias cov neeg tau txais kev pab tsuas yog rub tawm lawv cov nyiaj thiab kev cia siab rau qhov zoo tshaj plaws.
Qhov HDR Factor
Ib qho ntawm cov lus tseeb "techie" yuav nkag mus rau TV TV yog HDR . HDR (High Dynamic Range) yog txhua qhov kev kub ntxhov hauv TV, thiab nws muaj qhov laj thawj zoo rau cov neeg tau txais kev pab.
Txawm hais tias 4K tau zoo dua qhov kev daws teeb meem uas tau muab tso tawm, HDR tackles lwm qhov tseem ceeb hauv ob lub TV thiab video projectors, lub teeb tso zis (luminance). Lub hom phiaj ntawm HDR yog los txhawb cov teeb pom kev zoo lub zog kom pom cov duab pom muaj cov yam ntxwv uas zoo li lub ntuj tsim teeb meem uas peb muaj nyob hauv "lub ntiaj teb tiag."
Yog li ntawd, ob lub ntsiab lus tsim tau muaj kev nce qib hauv kev tshaj tawm tshiab hauv TV thiab video projector thiab cov khw muag khoom: Cov Quav Hnav thiab Lom. Txawm hais tias lub sij hawm Lumens tau yog ib qho tseem ceeb ntawm cov video projector li cas rau qee xyoo, thaum mus yuav khoom TV rau cov hnub no, cov neeg tau txais kev pab tam sim no raug ntaus nrog lub sij hawm Nits los ntawm TV ua lag luam thiab cov neeg muag khoom muag. Yog li, cov ntsiab lus txhais ntawm cov Lumens thiab cov Qoob Lij yuav txhais li cas?
Qau thiab Lumens 101
Thaum txog qhov kev taw qhia ntawm HDR, thaum cov neeg tau txais kev pabcuam rau lub TV, ib lub npe / qauv yuav tau ntsia "ci dua" dua lwm qhov, tab sis qhov txawv ntawd tsis tshua tus nqi ntawm tus muag khoom muag, koj tsuas yog yuav tsum pom nws.
Txawm li cas los xij, nrog lub tswv yim ntawm HDR raws li ib qho kev ua tau zoo nyob rau ntawm cov xov tooj cua zuj zus (daim ntawv ceeb toom uas kuv tsis tau hais tias ci ntsa iab uas yuav tsum tau los tham tom qab) yuav muaj txiaj ntsig rau cov neeg tau txais kev pab ntawm cov Nits-ntau Nits, txhais tau tias lub TV tau tso zis ntau dua, nrog rau lub hom phiaj los txhawb HDR-tog twg los nrog cov ntsiab lus tshaj tawm los yog cov nyhuv generic hluav taws xob generated ntawm lub TV sab hauv .
Yuav kom npaj tau koj tus kheej rau qhov kev sib tw no hauv kev ua yeeb yam hauv TV, nrog rau kev tshaj li kev lag luam, koj yuav tsum paub seb lub teeb taws tau ntsuas li cas hauv TV thiab video projectors.
Qe ntshauv: Xav txog lub TV zoo li lub Hnub, uas tawm suab ncaj qha. Cov qe ntshauv yog ib qho ntsuas ntawm lub tsho tshaj yeeb yam hauv TV rau koj qhov muag (luminance) hauv cheeb tsam. Nyob rau ntau theem kev sib tw, tus NIT yog ib qho tawm ntawm cov khoom siv hluav taws xob sib npaug sib npaug rau ib qho tshwm sim hauv ib lub xwm fab xwm meem (cd / m2 - ib qho kev ntsuas ntsuas ntawm kev siv qhov zoo).
Yuav muab qhov no rau hauv qhov kev xav, tus TV nruab nrab yuav muaj peev xwm tsim tawm 100 txog 200 Qib, thaum HDR-tshaj TV tau muaj peev xwm tawm ntawm 400 mus rau 2000 zes.
Lens: Lumens yog ib lub sij hawm luv luv piav txog lub teeb tawm, tab sis rau cov video projectors, qhov tseeb tshaj plaws lub sij hawm siv yog ANSI Lumens (ANSI stands rau America National Standards Institute).
Rau qhov project projectors, 1000 ANSI Lumens yog qhov tsawg kawg nkaus uas ib lub projector yuav tsum tau tso tawm rau kev ua yeeb yam hauv tsev, tiam sis feem ntau hauv tsev ua yeeb yam projectors nruab nrab ntawm 1,500 mus txog 2,500 ANSI lumens ntawm lub teeb tso zis. Los ntawm lwm tus tes, ntau lub phiaj xwm video (siv rau ntau yam hauj lwm, uas muaj xws li tsev lom ze, kev ua lag luam, los yog kev kawm siv, kuv yuav tau tso tawm 3,000 los yog ntau dua ANSI lumens).
Hauv kev sib piv rau cov qe, ib qho ANSI lumen yog qhov teeb ntawm lub teeb uas thaws tawm ntawm ib cheeb tsam square square uas yog ib lub meter ntawm ib qho chaw candela ci. Xav txog tus duab tso tawm ntawm lub vev xaib yees duab, los yog phab ntsa ua lub hli, uas qhia teeb rov qab mus rau tus tuav.
Qaub qaub vs Lumens
Thaum muab piv rau cov qe ntshauv mus rau Lumens, nyob rau hauv cov ntsiab lus yooj yim, 1 Nit ntau dua lub teeb tshaj 1 ANSI lumen. Qhov sib txawv ntawm qhov sib txawv thiab cov Lumens yog qhov nyuaj. Txawm li cas los xij, rau tus neeg tau txais kev pab sib piv nrog lub TV nrog cov duab video, ib txoj kev muab nws yog 1 Nit yog kwv yees sib npaug ntawm 3.426 ANSI Lumens.
Siv qhov kev taw qhia ntawd, txhawm rau txiav txim siab seb muaj pes tsawg tus NTS yog piv rau cov nab npawb ntawm ANSI lumens, koj muab cov Nits los ntawm 3.426. Yog tias koj xav ua tus nraud (koj paub cov lumens thiab xav paub seb nws sib npaug hauv Nits), ces koj yuav faib cov xov tooj ntawm Lumens los ntawm 3.426.
Nov yog qee cov qauv:
- 200 Cov qe yog qhov sib npaug ntawm 685 ANSI Lumens
- 500 Cov qe ntshauv yog piv rau li 1,713 ANSI Lumens
- 730 Cov qe ntshauv yog piv rau li 2,500 ANSI Lumens
- 1,000 Nits yog piv rau li 3,426 ANSI Lumens
- 1,500 Qoob loo piv rau txog 5,139 ANSI Lumens
- 2,000 Nits yog piv rau 6,582 ANSI Lumens
Raws li koj tau pom, yuav kom ib qhov video projector ua kom tiav ib lub teeb tawm sib npaug ntawm 1,000 Nits (nco ntsoov tias koj tau teeb pom kev zoo ib yam hauv chav tsev thiab chav teeb pom kev zoo ib yam) - tus projector xav tau ua kom ntau li 3,426 ANSI Lumens, uas yog tawm ntawm ntau yam rau kev ua yeeb yam tshaj plaws hauv tsev.
Txawm li cas los xij, ib lub projector uas tau tso tawm 1,713 Ansi Lumens, uas yog yooj yim attainable rau feem ntau video projectors, tuaj yeem phim lub TV uas muaj lub teeb tawm ntawm 500 Cov qoob loo.
TV thiab Video Projector Lub teeb zis hauv Cov Lus Tseeb
Txawm hais tias tag nrho cov saum toj no "techie" info ntawm Nits thiab Lumens muab ib tus txheeb ze siv, nyob rau hauv lub ntiaj teb daim ntawv thov, tag nrho cov zauv tsuas yog ib feem ntawm zaj dab neeg.
Piv txwv, nco ntsoov tias thaum lub TV lossis video projector yog touted tau tawm ntawm cov khoom tawm los ua 1,000 Nits lossis Lumens, qhov ntawd tsis txhais tau hais tias lub TV lossis lub projector tawm ntawd ntau lub sijhawm. Ntas los yog scenes feem ntau pom muaj ntau yam ci thiab ci ntsiab lus, nrog rau lwm yam xim. Tag nrho cov kev hloov no yuav tsum tau sib txawv ntawm cov teeb zis.
Ua lwm yam lus, koj muaj ib qhov chaw uas koj pom lub hnub nyob saum ntuj, tias feem ntawm daim duab yuav tsum tau TV lossis video projector los tso tawm ntau tshaj plaws ntawm cov qe los yog Lumens. Txawm li cas los xij, lwm feem ntawm daim duab, xws li ib lub tsev, toj roob hauv pes, thiab ntxoov ntxoo, yuav tsum tau tso zis ntau dhau, muaj kab tias tsuas yog 100 los yog 200 Cov Quav Noob los yog Luam. Kuj, txawv xim uas tso tawm kom pom zoo pab rau ntau lub teeb tso zis ntau hauv cov thav duab lossis scene.
Lub ntsiab lus tseem ceeb ntawm no yog qhov sib piv ntawm cov yam khoom ci thiab cov khoom tsaus ntuj tshaj plaws, los yog ze li qhov qub, ua rau tib qhov muag pom. Qhov no yog qhov tshwj xeeb tshaj yog rau cov HDR-enabled TVs hauv relation to LED / LCD TVs . OLED TV tshuab tsis tuaj yeem pab txhawb nqa ntau lub teeb ntawm lub teeb pom kev zoo xws li LED / LCD TV tshuab tau. Txawm li cas los xij, tsis zoo li ib lub TV / LCD TV, thiab TV OLED yuav tsim tau dub.
Qhov no txhais tau hais tias yog txawm tias tus neeg zoo tshaj tus qauv HDR rau LED / LCD TVs yog lub peev xwm los tso saib yam tsawg 1,000 Noog, tus txheej txheem HDR tus qauv rau cov TVs OLED tsuas yog 540 Nits. Txawm li cas los xij, nco ntsoov, tus qauv siv rau cov zis ntau tshaj plaws tawm, tsis nruab nrab cov zis tawm. Yog li, txawm hais tias koj yuav pom tau hais tias muaj 1,000 Nit muaj peev xwm LED / LCD TV yuav ci zoo dua li lub TV hlau OLED thaum, hais tias, ob qho tib si yog tso lub hnub los yog lub ntuj ci ntsa iab, cov TV OLED yuav ua tau haujlwm zoo dua rau ntawm qhov teebmeem ntawm qhov tsaus ntuj nti ntawm tib qho duab, ces tag nrho Dynamic Range (qhov taw tes nrug nruab nrab ntawm cov nyiaj dawb thiab ntau tshaj dub yuav zoo sib xws).
Tsis tas li ntawd, thaum muab piv rau HDR-enabled TV uas tau tawm 1,000 Noob, nrog HDR enabled video projector uas tawm tau 2.500 ANSI lumens, qhov HDR ntxig rau TV yuav ua haujlwm ntau dua "kev pom qhov kev ci".
Tsis tas li ntawd, tej yam xws li kev saib hauv chav tsaus ntuj, tsis muaj kev sib raug zoo rau cov chav tsev, qhov dav hlau npo, kev ntxeeb ntxoo (rau qhov projectors), thiab qhov chaw sib txeeb, ntau dua los sis tsawg dua Nit lossis Lumen tawm yuav tsum tau txais tib yam .
Rau cov video projectors, muaj qhov sib txawv ntawm qhov zis muaj peev xwm ua tau ntawm qhov projectors uas siv LCD thiab DLP technology. Qhov no txhais tau hais tias qhov LCD projectors muaj peev xwm ua kom muaj peev xwm ua kom sib npaug rau cov xim dawb thiab xim, thaum DLP qhov projectors uas siv cov xim log tsis muaj peev xwm ua qhov sib npaug ntawm cov xim dawb thiab xim teeb. Rau ntau yam ntxiv, xa rau peb tus khub tsab xov xwm: Video Projectors thiab Color Brightness
Lub Suab Analogy
Ib qho analogy mus kom ze rau qhov teeb meem HDR / Nits / Lumens yog tib txoj kev uas koj yuav tsum tau ua kom muaj zog ntawm kev siv zog ua haujlwm rau hauv lub suab. Tsuas yog vim hais tias qhov kev hloov siab los yog lub tsev ua yeeb yam hauv tsev yeej hais kom xa 100 watts ib channel, nws tsis tau txhais tias nws tawm ntau lub zog txhua lub sijhawm.
Txawm hais tias qhov muaj peev xwm ua tau tawm ntawm 100 watts yuav qhia tau hais tias yuav muaj dab tsi los ntawm cov suab paj nruas los yog cov yeeb yaj kiab zoo nkauj, feem ntau lub sij hawm, rau cov suab lus, thiab feem ntau suab paj nruag thiab suab teebmeem, tus receiver nkaus xwb yuav tsum tso tawm 10 watts rau qhov koj hnov qhov koj xav hnov. Rau cov lus qhia ntxiv, xa mus rau peb cov tshooj cai: To taub Amplifier Lub Teeb Txawb Hluav Taws Xob .
Lub teeb Output vs Brightness
Rau TVs thiab Video Projectors, Cov qe ntshauv thiab ANSI Lumens yog ob qho kev ntsuas ntawm lub teeb tso zis (Luminance). Txawm li cas los xij, lub sij hawm Brightness haum qhov twg?
Brightness tsis zoo ib yam li cov txiaj ntsig ntawm Luminance (lub teeb tso zis). Txawm li cas los xij, Brightness yuav raug xa mus rau lub peev xwm ntawm tus neeg saib xyuas los xyuas qhov sib txawv ntawm Luminance.
Kev ci ntsa iab kuj tseem yuav hais tau raws li feem pua qaim los sis feem pua qis dua ntawm qhov taw tes thij duab (piv txwv li Brightness tswj ntawm TV lossis video projector - saib cov lus qhia ntxiv hauv qab). Ua txhais tau tias, Brightness yog tus txhais lus (ntau tshaj qhov kaj, tsis tshua kaj siab) ntawm qhov pom ntawm Luminance, tsis yog qhov tseeb Luminance.
Txoj kev lub TV lossis Video projector qhov kev ua haujlwm ci ntsa iab yog los ntawm kho qhov nyiaj ntawm cov theem dub uas pom ntawm qhov screen. Txo cov "ci ntsa iab" ua rau cov duab tsaus nti ntawm daim duab tsaus ntuj, ua rau kom tsis meej thiab "nkos" saib nyob rau ntawm qhov chaw tsaus ntuj. Ntawm qhov tod tes, raising qhov "ci ntsa iab" ua rau qhov chaw tsaus ntuj ntawm cov duab zoo zog, uas ua rau cov cheeb tsam tsaus nti ntawm daim duab zoo nkauj zuj zus ntxiv, nrog rau tag nrho cov duab zoo li nrhiav kev ntxuav.
Txawm hais tias Brightness tsis zoo li cov txiaj ntsim ntawm Luminance (lub teeb tso zis), cov TV thiab video projector makers, as Well as product reviewers, muaj tus cwj pwm ntawm kev siv lub sij hawm Brightness raws li tus caum-tag rau ntau cov lus qhia ntxiv uas piav qhia lub teeb tawm, uas muaj xws li cov qe ntshauv thiab Lumens. Ib qho piv txwv yog Epson txoj kev siv lo lus "Color Brightness" uas tau hais ua ntej hauv tsab xov xwm no.
TV thiab Projector Lub teeb lus qhia tawm
Ntsuas cov zis lub teeb nrug nrog rau kev sib raug zoo ntawm cov qe ntshauv thiab cov Lumens pom nrog ntau yam lej thiab physics, thiab muab nws ua ib qho piav me me tsis yooj yim. Li ntawd, thaum TV thiab video projector tuam txhab uas muag tau txais kev pab nrog cov ntsiab lus xws li cov qe ntshauv thiab cov Lumens tsis muaj ntsiab lus teb, tej yam yuav tau ruam.
Txawm li cas los xij, thaum xaiv qhov tso zis tawm, ntawm no yog ib co txheej txheem kom nco ntsoov.
Yog tias koj tab tom yuav khoom rau 720p / 1080p los yog Non-HDR 4K Ultra HD TV, cov lus qhia txog cov qe tsis yog nce, tab sis nws txawv ntawm 200 mus rau 300 Nits, nws muaj kev kaj lug txaus rau cov ntsiab lus thiab cov chav teeb feem ntau (txawm tias 3D yuav pom tau tias dimmer). Qhov twg koj yuav tsum xav txog cov Nits ntsuam xyuas dua li yog nrog 4K Ultra HD TVs uas muaj HDR. Ntawm no yog qhov chaw siab zog qhov tso zis, zoo dua.
Rau 4K Ultra HD LED / LCD TVs uas yog HDR-tshaj, ib qho kev ntsuam xyuas ntawm 500 Cov qoob loo muab qhov nyhuv nyhuv HDR (saib labeling xws li HDR Premium), thiab TVs uas tso zis 700 Cov voj voog yuav muab ib qho tshwm sim zoo dua nrog HDR cov ntsiab lus. Txawm li cas los xij, yog tias koj tab tom nrhiav kom tau qhov zoo tshaj plaws tshwm sim, 1000 Nits yog cov qauv siv (saib cov ntawv cim xws li HDR1000), thiab cov Nits saum toj-siab rau siab kawg HDR LED / LCD TVs yog 2,000 (pib nrog ib co TVs qhia nyob rau hauv 2017).
Yog tias mus rau ib lub TV hauv TV, lub teeb tawm ntawm lub teeb ciav dej siab txog li 600 Nits - tam sim no, tag nrho cov TVs HDR-muaj peev xwm yeem yuav tsum tau tso tawm ntau ntau 540 Nits. Txawm li cas los xij, nyob rau sab nraud ntawm cov kab zauv, raws li tau hais yav tas los, OLED TVs yuav tso saib meej dub, uas yog TV / LCD TVs tsis tau - yog li 540 mus rau 600 Nits ntsuam xyuas ntawm OLED TV tuaj yeem tso tau qhov tshwm sim zoo dua nrog HDR cov ntsiab lus tshaj li ib qho LED / LCD TV yuav nyob ntawm tib theem qis.
Txawm li cas los xij, txawm tias muaj 600 Lub Rooj Sib Tham OLED thiab 1,000 Nit LED / LCD TV tau ob leeg saib tau zoo, qhov 1,000 Nit LED / LCD TV tseem yuav ua rau muaj kev tshwm sim ntau dua, tshwj xeeb tshaj yog nyob rau hauv chav tsev zoo. Raws li tau hais yav tas los, 2,000 Nits yog tam sim no lub siab tshaj plaws lub teeb tso zis uas muaj nyob rau ntawm TV, tab sis qhov ntawd yuav tshwm sim hauv cov duab tso tawm uas yog khaus heev rau qee cov neeg saib.
Yog tias koj tab tom yuav khoom rau ib qhov video projector, raws li tau hais los saum no, ib lub teeb tawm ntawm lub teeb meem 1,000 ANSI Lumens yuav tsum yog qhov tsawg kawg nkaus los xav txog, tiam sis feem ntau qhov projectors muaj peev xwm tshaj tawm ntawm 1,500 mus 2,000 ANSI lumens, uas muab kev kawm zoo dua hauv chav tsev uas tsis yog tuaj yeem ua kom tsaus nti. Ntxiv thiab, yog tias koj ntxiv 3D tov, xav txog lub projector nrog 2,000 lossis ntau tshaj lumens cov zis, raws li 3D dluab yog lawm ntau tshaj li lawv cov 2D counterparts.
HDR enabled video projectors kuj tsis muaj "point-to-point accurate" nrog rau cov khoom me me tiv thaiv tsaus nti. Piv txwv li, ib qho HDR TV yuav tso saib hnub qub tiv thaiv ib lub hmo tsaus dub zog dua li tau ntawm ib tug neeg tau txais los ntawm HDR qhov project. Qhov no yog vim cov projectors muaj teeb meem hauv kev teeb tsa kev ci ntsa iab hauv cheeb tsam me me heev hauv kev sib raug zoo ntawm ib qho chaw duab tsaus ntuj.
Rau qhov zoo tshaj plaws HDR tshwm sim muaj nyob deb (uas tseem ntog luv ntawm qhov pom qhov ci ntawm 1,000 Nit TV), koj yuav tsum xav txog 4K HDR enabled lub tshuab tawm uas tawm tau tsawg kawg 2500 ANSI lumens. Tam sim no, tsis muaj ib qho kev tshaj tawm HDR lub teeb ci rau cov neeg tau txais kev pabcuam hauv video.
Lub Kab Hauv Qab
Ib lo lus kawg ntawm kev tawm tswv yim, ib yam li cov lus qhia lossis lub ntsiab lus tshiab uas tau muab pov tseg rau koj los ntawm cov khw lossis tus neeg muag khoom, tsis yog qhov kev xav-nco ntsoov tias Nits thiab Lumens tsuas yog ib feem ntawm qhov kev ua zauv thaum xav txog kev yuav khoom TV lossis video projector .
Koj yuav tsum siv tag nrho cov pob rau hauv kev saib xyuas, uas tsis tsuas yog muaj cov zis lub teeb tawm, tab sis yuav ua li cas tag nrho cov duab zoo li koj (pom kev ci ntsa iab, xim, zoo ib, ua lus teb , pom lub kaum), yooj yim ntawm teeb thiab siv, suab zoo ( yog tias koj tsis mus siv lub kaw lus sab nrauv ) thiab muaj cov kev pabcuam ntxiv (xws li internet streaming hauv TVs). Kuj tseem nco ntsoov tias yog tias koj xav tau TV nrog HDR, koj yuav tsum muaj cov ntsiab lus ntxiv rau kev nkag siab (4K streaming thiab Ultra HD Blu-Ray Disc ).