Aquarium Photography nyob rau hauv LED Teeb: Xim Fidelity, White Balance, thiab Honest Duab
Cov duab thoob dej yug ntses feem ntau raug kho raws li cov pov thawj ntawm kev teeb pom kev zoo, tsis tau lub koob yees duab, dej, iav, chav tsev, kho, thiab tso saib txhua qhov chaw zaum ntawm lub rooj sib tham thiab cov neeg saib. Tsis siv neeg dawb tshuav nyiaj li cas tuaj yeem ua rau lub pob zeb xiav xiav lossis sov lub tannin - nplua nuj tank. Lub xov tooj software tuaj yeem nqa cov duab ntxoov ntxoo, sib xyaw ua ke, ua kom pom cov ntsiab lus, thiab ua kom saturation tsis tau nug. Ib daim duab zoo nkauj tuaj yeem ua tau raws li kev lag luam, tab sis nws yuav ua tsis ncaj ncees thaum nws tau nthuav tawm raws li lub hom phiaj cov ntaub ntawv ntawm cov thoob dej yug ntses li cas rau lub qhov muag.
Pib los ntawm kev txiav txim siab lub hom phiaj yees duab. Ib tug hero duab yuav txhob txwm tsim mus ob peb vas. Daim ntawv teev kev noj qab haus huv ntawm tsiaj txhu yuav tsum ua kom muaj kev sib haum xeeb. Ib qho xim- kev sib piv yuav tsum tau kho qhov raug, tshuav dawb, lub lens, lub koob yees duab txoj hauj lwm, teeb teeb, thiab kho. Daim ntawv teev cov khoom lag luam xav tau kev tshaj tawm yog tias cov fluorescence, cov ntxaij lim dej, lossis cov xim muaj xim hloov pauv xav pom. Kev sib xyaw cov hom phiaj no tsim cov kev sib cav uas tsis muaj kev qhia tshwj xeeb tuaj yeem daws tau. Daim duab raws tu qauv yuav tsum tau sau ua ntej qhov kev tua, tshwj xeeb tshaj yog thaum sib piv ob qho khoom siv lossis cov khoom tsim khoom.
Cov xim rendering tsis tuaj yeem txo qis rau qhov sib txheeb xim kub lossis CRI ib leeg. US Department of Energy piav qhia tias ANSI/IES TM-30 siv ntau yam kev ntsuas thiab cov duab los piav txog kev ncaj ncees thiab gamut ntau dua. Txawm tias cov kev ntsuas no qhia txog lub teeb ci raws li kev suav suav; lawv tsis kwv yees lub koob yees duab ua tus tswv. Rau kev ua haujlwm thoob dej yug ntses, kev faib hluav taws xob spectral, siv lub hom phiaj xim, thiab kev tswj xyuas kev ua kom pom tseeb dua li ib lub cim siab-CRI.
Siv phau ntawv los yog xauv qhov chaw thaum twg rov ua dua tseem ceeb. Xaiv lub shutter ceev uas tsis txhob txav qhov muag plooj thiab tsis cuam tshuam nrog kev hloov pauv LED. Teem lub aperture thiab ISO txhob txwm tshaj tawm, xauv lub ntsej muag, thiab siv lub koob yees duab thaum ua tau. Yees duab qhov nruab nrab grey los yog xim siv nyob rau hauv tib lub teeb teb, los ntawm tib lub khob thiab dej txoj kev. Yog tias qhov kev siv tau muab tso rau sab nraum lub thoob dej yug ntses, nws tsis tuaj yeem kho qhov spectral thiab xim hloov tau qhia los ntawm dej, tannins, xiav - lub teeb hnyav, thiab glazing.
Reflections yog qhov zoo tshaj plaws daws lub cev ua ntej kho. Ua kom tsaus hauv chav, tshem cov khaub ncaws ci thiab cov ntxaij vab tshaus tawm, siv lub lens hood nyob ze ntawm lub iav, thiab ntxuav ob sab ntawm lub qhov rais saib. Lub koob yees duab me ntsis- lub kaum sab xis hloov pauv tuaj yeem tshem tawm qhov kev xav tau tab sis tuaj yeem qhia qhov txawv txav, tshwj xeeb tshaj yog los ntawm acrylic tuab. Polarizing cov ntxaij lim dej tuaj yeem pab hauv qee qhov kev npaj, tab sis lawv tuaj yeem hloov qhov raug thiab tsis tuaj yeem tshem tawm txhua qhov kev xav ntawm cov iav txheej thiab cov dej. Sau lawv cov kev siv thaum qhov tshwm sim ua pov thawj ntawm cov khoom.
Kev yees duab fluorescence yuav tsum muaj kev ncaj ncees tshwj xeeb. Violet lossis xiav excitation tuaj yeem ua rau coral pigments emit striking pom xim, tshwj xeeb tshaj yog thaum lub txiv kab ntxwv los yog daj lim suppresses lub teeb excitation. Qhov no yog ib txoj hauv kev siv tau los sau cov fluorescence, tab sis nws tsis yog ib txwm dawb - pom lub teeb thiab tsis ntsuas coral loj hlob lossis kev noj qab haus huv. Tshaj tawm ib daim ntawv teev cov duab fluorescence nrog rau qhov sib npaug - lub teeb siv thaum qhov kev cia siab tshwm sim. Tsis txhob cloning cov ntaub so ntswg, nkaum algae, los yog hloov cov xim tsiaj thaum lub sij hawm retouching.
Yees duab ntxiv lwm txheej vim hais tias tus ncej tus nqi thiab lub sijhawm kaw tuaj yeem nthuav tawm cov hlua lossis pulses uas tsis pom hauv daim duab tseem. Lub xov tooj video qhia tsis muaj bands tsis ua pov thawj tias lub teeb pom kev ntawm lub cev tsis tuaj; lub koob yees duab yuav tsuas yog synchronized nrog nws. Hloov pauv, banding tuaj yeem tshwm sim los ntawm kev sib cuam tshuam ntawm lub koob yees duab scanning thiab tus tsav tsheb modulated. Siv cov cuab yeej ntsuas tsim nyog rau kev thov engineering, thaum siv cov yeeb yaj kiab ua cov cuab yeej tshuaj ntsuam xyuas thiab ib txoj hauv kev los sib piv qhov pom kev ua haujlwm.
Ib daim ntawv teev cov duab uas muaj kev ntseeg siab tau sau cov qauv kev sib tw thiab cov firmware, cov feem pua ntawm cov sijhawm, lub sijhawm teem sijhawm, qhov siab mounting, dej clarity, lub koob yees duab qauv, lens, raug, dawb tshuav nyiaj li cas, lim, hom ntawv, thiab kho cov kauj ruam. Khaws cov ntaub ntawv qub RAW lossis tsis tau kho. Rau kev lag luam e-lag luam, hais seb cov duab sawv cev rau lub teeb pom kev dawb, fluorescence, lossis ib qho chaw muaj tswv yim. Cov duab ncaj ncees yuav tsis tshua muaj kev cuam tshuam ntau dua li cov txheej txheem ua haujlwm hnyav, tab sis lawv txo qis rov qab, tiv thaiv cov khoom lag luam, thiab pab cov neeg siv khoom paub qhov txawv teeb pom kev zoo los ntawm kev txhais lub koob yees duab.
Cov hom tuaj yeem tsim tau peb cov ntaub ntawv xa tawm los ntawm txhua qhov kev tua: ib qho kev siv tsis tau raug ntes, cov duab kho kom raug, thiab cov duab muaj tswv yim lag luam. Khaws cov teeb pom kev zoo thiab lub koob yees duab metadata nrog txhua tus. Kev pom zoo yuav tsum xyuas tias cov ntawv sau sib phim cov kev kho mob thiab cov khoom nws tus kheej tsis tau hloov pauv. Qhov kev ua haujlwm no muab kev ywj pheej rau cov neeg tsim qauv thaum khaws pov thawj. Nws kuj tseem ua rau yav tom ntej hauv zos yooj yim dua vim tias pab pawg tuaj yeem hloov cov ntawv lossis cov qoob loo yam tsis tas yuav rov ua dua - hloov xim kom txog thaum cov ntses, nroj tsuag, lossis khoom siv tsis zoo ib yam li cov khoom yees duab.
Rau kev sib piv batch, tsim ib qho chaw thaij duab me me nrog lub koob yees duab ruaj khov thiab lub hom phiaj txoj haujlwm, cov xim dub nyob ib puag ncig, lub vaj huam sib luag siv huv si, thiab txuag qhov chaw raug. Cia txhua qhov kev sib tw sov so, txheeb xyuas nws qhov kev pab cuam channel, thiab suav nrog ib lub thav duab uas qhia tus lej xov tooj lossis tus lej xeem. Histogram sib piv ib leeg tsis txaus vim tias ob lub spectra tuaj yeem tsim qhov ci ci zoo sib xws thaum ua cov xim liab, ntsuab, lossis cov xim fluorescent txawv. Thaum cov duab raug compressed rau cov khw muag khoom, xyuas cov ntaub ntawv xa tawm ntawm ob peb lub vijtsam zoo tib yam, tab sis khaws cov xim - tswj tus tswv. Marketplace algorithms tuaj yeem txuas ntxiv lossis hloov cov duab, yog li cov ntaub ntawv khaws cia yog qhov tseem ceeb rau kev daws teeb meem. Yog tias cov cuab yeej siv hluav taws xob tshem tawm cov kab hluav taws xob, kev xav, cov algae, lossis cov khoom siv tom qab, lawv yuav tsum tsis txhob hloov cov khoom lag luam LED suav, vaj tse geometry, tswj cov zaub, cov khoom sib txuas, cov xim emissions, los yog ua qauv qhia. Kev ntxuav qhov muag yuav tsum tsis txhob tsim lub peev xwm uas lub tsev yees duab tsis muaj.
Kev yees duab thoob dej yug ntses zoo cais cov lus qhia muaj tswv yim los ntawm cov ntaub ntawv pov thawj. Thaum teeb tsa thiab hloov kho tau sau tseg, cov duab tuaj yeem ua kom zoo nkauj thaum muab cov neeg siv khoom muaj tseeb rau kev txiav txim xim, fluorescence, thiab kev ua haujlwm zoo. Khaws cov ntaub ntawv qub thiab tshaj tawm cov ntsiab lus ntawm kev ntes txaus rau cov duab lub hom phiaj. Daim duab fluorescence tau tshaj tawm, cov ntaub ntawv tsis sib xws, thiab cov duab muaj tswv yim tuaj yeem ua ke yam tsis muaj kev tsis meej pem.
