
throo-dhi-lens metering

photography, throo-dhi-lens metering (ttl metering) anedi kemerala lakshanaanni suuchistumdi, dheenilo drushyam nundi pratibimbimchae kaanti yokka teevrata lens dwara kolustaaru; pratyeka metering vindo ledhaa bahya chethitho pattukune kaanti meetarnu upayoginchadaaniki badulugaa. konni cameralalo vividha ttl metering modlanu enchukovachhu. eee samacharanni appudu optimal film ledhaa image sensor exposure (sagatu prakaasam) nuu sett cheyadaaniki upayoginchavacchu, kemeraku anusandhaaninchabadina flash unit dwara vidudalayye kaanti mottaanni niyantrinchadaaniki kooda dheenini upayoginchavacchu.
vivarana.
thrue-dhi-lens metering anedi chaalaa tarachugaa single-lens reflexes (slr) cameralatho mudipadi untundi.
chaalaa film mariyu digital slrlalo, exposure metering kosam light sensor (luu) pentaprism ledhaa pentamirrorlo chaerchabadataayi, dheeni dwara slr viewfindernu lens dwara neerugaa chuudataaniki anumatistundi. addam paiki tippabadinanduna, bahirgatam chesetappudu kaanti akkadiki cherukodu, vaastava bahirgatam kaavadaaniki mundu avasaramaina bahirgatam nirnayinchabadaali. tatphalitamgaa, eee kaanti sensaarlanu saampradayakamgaa parisara kaanti ttl metering kosam matrame upayoginchavacchu. kotta slrlalo alaage daadaapu anni dslrlalo, vaatini prii flash ttl metering kosam kooda upayoginchavacchu, ikkada telisina teevrata kaligina chinna prii flaashnu upayoginchi addam paiki tippadaaniki mundu metering nirvahinchabadutundi mariyu avasaramaina flash laitnu camera paikappuloni metering kanaalu koliche reflected flash light nundi extrapolate chestaaru, aapai etuvanti real-time feedback lekunda exposure samayamlo vartinchabadutundi.
olympic oom-2, pentox lx, nicon eff3 mariyu minolta 9000 vanti konni pratyekinchi adhunaatana film slrlu unnaayi, ikkada addam pette diguvana unna metering kanaalu parisara kaanti metering kosam upayoginchabaddaayi, badulugaa modalnu batti ledhaa camera paikappuloni metering kanaalaku adanamgaa. namuunaanu batti, sagam paaradarsaka pradhana addam venuka unna dviteeya addam, modati shutter tera yokka pratyeka pratibimba puuta, chitram yokka uparitalam ledhaa daani kalayika dwara kaanti akkada krinda pratibimbistumdi. eee vidhanam yokka prayojanaallo okati emitante, focusing teralu ledhaa viewfinderlanu marchetappudu koliche phalitaaniki etuvanti sardubaatlu avasaram ledhu. alaage, eee aakruteekarananu upayoginche konni kemeraalu (udhaa.zii. minolta 9000) pedda koonaalaloo metering kanaalaku cherukune kaanti valla kalige kolata lopalaku vyatiraekamgaa vaastavamgaa roganirodhaka saktini kaligi untaayi, udaaharanaku tilt-shift lenslatho.
addam pette diguvana unna metering kanaalu, chitram nundi pratibimbimchae kaantini upayoginchi, real-time ttl flash metering yokka shaastreeya roopaaniki maddatu ichhe anni film slrlalo kooda upayoginchabadataayi.
konni prarambha pentox dslrlu ttl flash metering kosam kooda idhe aakruteekarananu upayoginchavacchu, conny image sensorla yokka pratibimbam lakshanaalu film lakshanaalaku gananeeyamgaa bhinnamgaa untaayi kabatti, eee paddhati aacharanalo nammadaganidigaa niroopinchabadindi. anduvalla, digital slr kemeraalu saadhaaranamgaa yea real-time ttl flash meteringku maddatu ivvavu mariyu badulugaa prii flash meteringnu upayoginchaali. parisara mariyu flash light metering appudu camera paikappulo unna metering module dwara nirvahinchabadutundi (paina chudandi).
pratyaksha veekshanha ledhaa veediyoku maddatu ichhe digital slrlu eee modlalo exposure metering kosam image sensor nundi reed avutnu upayogistaayi. idhi soonee yokka slt digital cameralaku kooda vartistundi, ivi anni samayaallo exposure metering kosam image sensaarnu upayogistaayi. marketlo yea digital slr ledhaa slt camera image sensaarnu upayoginchi yea vidhamaina real-time ttl flash meteringku maddatu ivvaledu. ayithe, nija-samaya pratispandanato mariyu preflash lekunda metering yokka prayojanaalanu batti, image sensor saanketikata abhivruddhi chendutunna koddi ituvanti paddhatulu pravesapettabadatayani aasinchavachchu.
ttl metering vyavasthalu itara rakaala cameralalo kooda cherchabaddaayi. chaalaa digital "point-und-shoot kemeraalu" ttl meteringnu upayogistaayi, dheenini imaging sensor swayamgaa nirvahistundi.
aneka adhunaatana aadhunika cameralalo chitram yokka vividha pradaesaalaloo kaanti parimaanaanni pondadaaniki bahula 'vibhagalu' upayoginchabadataayi. photographer enchukunna modnu batti, eee samacharam appudu exposurenu sarigga sett cheyadaaniki upayoginchabadutundi. oka saadhaarana spot meater thoo, chitramlo oke oka spot enchukobadutundi. aaa nirdishta pradaesaanni sarigga bahirgatam cheyadaaniki camera bahirgatam chestundi. konni aadhunika slr vyavasthalalo spot metering praantam ledhaa john nuu enchukunna vaastava focusing praantaaniki jatha cheyavachu, idhi marinta vasyatanu andistundi mariyu exposure lock vyavasthalanu upayoginchaalsina avasaram takkuvagaa untundi. bahula vibhaga meteringtho (matricks ledhaa tenegudu metering anie kooda pilustaaru), vividha vibhagala viluvalu kalapabadataayi mariyu saraina exposurenu sett cheyadaaniki baruvu vaeyabadataayi. eee metering modla amalu kemeraalu mariyu tayaareedaarula madhya maarutuu untundi, idhi cameralanu marchetappudu oka drushyam elaa bahirgatamavutundo anchanaa veyadam kashtataram chestundi.
charitra.
lens dwara kaanti meteringnu kaligi unna modati camera japanese company nicon, oka namuunaa shreni kanugone camera, ess. pii. ex. thoo undhi. cameralo nicon rakam range finder lensulu upayoginchabaddaayi.
japanese company pentox, pentox spotmatic anie paeru pettabadina 35 mimi venuka-lens metering slr cameranu choopinchina modati tayaareedaaru. 1960 photokina sholo eee cameranu pradarsinchaaru. modati ttl light metering slr 1963 topcon rae suupar, idhi reflexes addam venuka cds metering selnu unchindi.
cinema metering off cheyandi.
1970laloe olympuses oem-2 cameranu vikrayinchindi, idhi chitram (otf) nundi neerugaa bahirgatam cheyadaanni kolustundi. olympuses upayoginche oo. tii. eff meteringlo, metering rendu margallo okadaanilo nirvahinchabadindi-ledhaa rendinti kalayika-upayogamlo unna shutter vegaanni batti.
oom-2 yokka auto dynamic metering (adm) vyavasthalo modati shutter curtainlo lens-facing side sagatu drushyaanni anukarinchadaaniki computer roopondinchina tellani blackla namuunaatoe puuta pooyabadindi. addam tippinappudu addam pette diguvana unna metering sell eee blackla namuunaa nundi bownes avtunna vishayam nundi pratibimbimchae kaantini kolichindi. rendava tera vidudala samayam vaastava bahirgatam samayamlo nija samayamlo sardubaatu cheyabadindi. shutter vegam peragadamtho, film uparitalam nundi pratibimbimchae vaastava kaanti kolustaaru mariyu rendava tera vidudala samayam tadanugunamgaa sardubaatu cheyabadutundi. idhi eee vyavasthatho kuudina cameralaku vaastava bahirgatam samayamlo lightinglo maarpulaku sardubaatu chese saamarthyaanni ichindi, idhi photomicrography mariyu khagola chayachitrana vanti pratyeka anuvartanaalaku upayogapadutundi.
leaca taruvaata eee vyavastha yokka vaividhyaanni upayoginchindi, alaage pentox lx cameralo vaati integrated direct metering (idm) thoo upayoginchindi.
modati tera vidudala kaavadaaniki mundu exposurenu chakkaga tune cheyadaaniki prarambha olympic ii-syries digital cameralalo eee "otf" vyavastha yokka vaividhyam upayoginchabadindi; idhi pani cheyadaaniki, modati tera tatastha buudida rangulo pooyabadindi.
lens flash metering dwara.
flash light yokka saraina mottaanni lekkinche prakriyanu kooda 'lens dwara' cheyavachu. idhi naan-flash 'throo dhi lens' metering kante gananeeyamgaa bhinnamaina reetilo jarugutondi. vaastava metering madhyamanni batti rendu vibhina margallo jarugutundi. digital ttl analog ttl kante bhinnamgaa panichestundi.
ttl yokka analog version eee krindi vidhamgaa panichestundihi incoming light filmnu taakinappudu, daanilo kontha bhaagam sensor vaipu pratibimbistumdi. eee sensor flaashnu niyantristundi. taginanta kaantini sangrahinchinatlayite, flash aagipotundi. minolta mariyu olympuses dwara eee vyavasthanu prarambha pareekshalo anni brandlu mariyu film rakalu kaantini oke mottamlo pratibimbimchavani kanugonabadindi, ayithe brandla madhya vaastava vyatyaasam sagam kante takkuva. dheeniki minahaayimpugaa polaroid yokka takshana slide film, idhi nalla uparitalam kaligi undhi mariyu dheenini ttl flash modlo upayoginchalemu. ayinappatikee, chaalaa anuvartanaalaku analog ttl flash exposure metering gatamlo upayoginchina vyavasthala kante marinta adhunaatanamainadi mariyu khachitamainadi mariyu chaalaa ekkuva vasyatanu anumatinchindi-mukhyamgaa bownes ayina flash exposurelu manaveeyamgaa lekkinchina samaanamaina vaati kante marinta khachitamainavi.
digital thoo, kaantini sekarinchadaaniki upayoginche CMOS ledhaa CCD chip taginantagaa pratibimbimchadu kabatti pratyaksha pratibimbam metering yokka eee maargam ikapai saadhyam kaadu. konni paatha digital kemeraalu ippatikee analog saanketikatanu upayogistunnaayi, conny ivi arudugaa jarugutunnaayi. eee saanketikatanu upayoginchadaaniki fujifilm ess1 mariyu ess3 atyanta prasiddha digital kemeraalu.
digital ttl eee krindi vidhamgaa panichestundihi vaastava bahirgatam kaavadaaniki mundu "preflushes" anie piluvabade okati ledhaa anthakante ekkuva chinna flashlu vidudalavutaayi. lens dwara tirigi vachhe kaanti kolustaaru mariyu eee viluva vaastava bahirgataaniki avasaramaina kaanti mottaanni lekkinchadaaniki upayoginchabadutundi. flash avutputnu meruguparachadaaniki bahula prii-flashlanu upayoginchavacchu. connon dheenini evaluative ttl (ii-ttl) gaa suuchimchimdi mariyu taruvaata ii-ttl II thoo vyavasthanu meruguparichindi. dii-ttl" anie piluvabade nicon digital ttl yokka modati roopam konni prarambha namoonaalalo upayoginchabadindi. appati nundi, unnata "ii-ttl" vyavastha upayoginchabadindi.
mundu-tera flaashnu upayogistunnappudu (shutter terichina ventane flash mantalu chelareginappudu), preflushlu mariyu pradhana flash maanava kantiki okatigaa kanipistaayi, endukante vaati madhya chaalaa takkuva samayam untundi. venuka-tera flash (exposure chivara flash mantalu) mariyu nemmadigaa shutter vegaanni upayogistunnappudu, pradhana flash mariyu preflushla madhya vyatyaasam marinta spashtamgaa untundi.
konni kemeraalu mariyu flash unitlu lensku vishayam yokka dhooramtho sahaa avasaramaina flash avutputnu lekkinchetappudu marinta samacharanni parigananaloki teesukuntaayi. oka subjectnu nepathyam mundu unchinappudu idhi laitingnu meruguparustundi. lens vishayam meeda drushti kendrikarinchinatlayite, vishayam meeda saraina bahirgatam cheyadaaniki flash niyantrinchabadutundi, tadwara nepathyaanni bahirgatam cheyakunda vadilivestundi. pratyamnaayamgaa, lens nepathyampai kendreekrutamaite, nepathyam sarigga bahirgatamavutundi, idhi mundu bhaagamlo unna amsaanni saadhaaranamgaa atigaa bahirgatam chestundi. eee saanketikataku dhoora samacharanni lekkinchagala saamarthyam unna camera, alaage lens sariiraaniki kendra dooraanni teliyajeyagala saamarthyam rendoo avasaram. nicon eee saanketikatanu "3dii matricks metering" gaa suuchistumdi, ayithe vividha camera tayaareedaarulu eee saanketikataku ververu padaalanu upayogistaaru. connon eee saanketikatanu ii-ttl IIలో cherchindi.
marinta adhunaatana ttl flash paddhatulalo off-camera flash laiting untundi, ikkada okati ledhaa anthakante ekkuva flash unitlu vishayam chuttoo vividha pradaesaalaloo untaayi. eee sandarbhamlo anni remot unitlanu niyantrinchadaaniki oka 'commander' unit (idhi camera baadeelo vileenam cheyabadutundi) upayoginchabadutundi. commander unit saadhaaranamgaa kanipinche ledhaa paraaruna kaanti yokka flashlanu upayoginchadam dwara remot flashlanu niyantristundi, ayithe ttl-saamarthyam gala radeo trigger vyavasthalu andubaatulo unnaayi. photographer saadhaaranamgaa ververu flashla madhya kaanti nishpattulanu maarchavacchu. saraina exposure pondadaaniki preflushlanu upayoginche saanketikata ippatikee automatic flash modlalo upayoginchabadutundi.