{"id":225,"date":"2012-06-19T01:07:19","date_gmt":"2012-06-18T23:07:19","guid":{"rendered":"http:\/\/www.proof.de\/?p=225"},"modified":"2020-04-20T13:30:25","modified_gmt":"2020-04-20T11:30:25","slug":"aditivni-a-subtraktivni-michani-barev-proc-si-pocitace-a-papir-nerozumeji-v-otazce-barev","status":"publish","type":"post","link":"https:\/\/www.proof.de\/cs\/additive-und-subtraktive-farbmischung-warum-sich-computer-und-papier-in-sachen-farbe-nicht-verstehen\/","title":{"rendered":"Pro\u010d si monitor a pap\u00edr nerozum\u00ed, kdy\u017e jde o barvy."},"content":{"rendered":"
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\n Hodnotit nyn\u00ed<\/span>\n <\/div>\n <\/div>\n

Barva je barva, \u0159ekli byste. To je pravda. Ale zkou\u0161eli jste n\u011bkdy vysv\u011btlit zn\u00e1m\u00e9mu po telefonu barvu sv\u00e9ho nov\u00e9ho auta nebo nov\u00e9 \u010derven\u00e9 kabelky? Pak si uv\u011bdom\u00edte, \u017ee lidsk\u00e9 rozpozn\u00e1v\u00e1n\u00ed barev a jejich reprodukce v jin\u00e9m m\u00e9diu jsou velmi obt\u00ed\u017en\u00e9.<\/p>\n

Tot\u00e9\u017e plat\u00ed pro po\u010d\u00edta\u010de - l\u00e9pe \u0159e\u010deno: monitory, a tisk\u00e1rny - tedy: laserov\u00e9 tisk\u00e1rny, inkoustov\u00e9 tisk\u00e1rny nebo tisk novin \u010di ofsetov\u00fd tisk bro\u017eur.<\/p>\n

Pro\u010d je \u010derven\u00e1 barva na monitoru jin\u00e1 ne\u017e \u010derven\u00e1 barva vyti\u0161t\u011bn\u00e1 na pap\u00ed\u0159e? Je to jednoduch\u00e9: polo\u017ete pap\u00edr p\u0159ed monitor. Oba odst\u00edny \u010derven\u00e9 jsou naprosto stejn\u00e9. Takto. Nyn\u00ed zcela zatemn\u011bte m\u00edstnost. Co uvid\u00edte? \u010cerven\u00e1 na monitoru je st\u00e1le \u010derven\u00e1. A \u00fapln\u011b stejn\u00e1 \u010derven\u00e1 na pap\u00ed\u0159e? Ta je nyn\u00ed \u010dern\u00e1. Pro\u010d je to tak? Je to jednoduch\u00e9:<\/p>\n

Monitor p\u0159id\u00e1v\u00e1 ke st\u00e1vaj\u00edc\u00edmu okoln\u00edmu sv\u011btlu sv\u011btlo, tj. spektr\u00e1ln\u00ed slo\u017eky.<\/strong> Pokud na monitoru vid\u00edte \u010dervenou barvu, je to proto, \u017ee monitor aktivn\u011b vyza\u0159uje \u010derven\u00e9 sv\u011btlo.<\/p>\n

A nyn\u00ed pap\u00edr: Kdy vid\u00edte \u010dervenou barvu na pap\u00ed\u0159e? P\u0159esn\u011b tehdy, kdy\u017e na pap\u00edr dopad\u00e1 b\u00edl\u00e9 sv\u011btlo, nap\u0159\u00edklad oknem nebo lampou. A kdy vid\u00edte \u010dervenou barvu na pap\u00ed\u0159e?<\/strong> Kdy\u017e na pap\u00edr dopad\u00e1 b\u00edl\u00e9 sv\u011btlo a pap\u00edr odstra\u0148uje z b\u00edl\u00e9ho sv\u011btla jin\u00e9 ne\u017e \u010derven\u00e9 spektr\u00e1ln\u00ed slo\u017eky a odr\u00e1\u017e\u00ed \u010derven\u00e9 sv\u011btlo. Pr\u00e1v\u011b tehdy vid\u00edte \u010dervenou barvu.<\/p>\n

Jedna barva, dva zcela odli\u0161n\u00e9 zp\u016fsoby jej\u00ed v\u00fdroby. A to je p\u0159esn\u011b ten p\u0159\u00edpad, kdy kalibrace barev a D\u016fkaz<\/a> an. Strategie? M\u011b\u0159en\u00ed. A to za pevn\u011b stanoven\u00fdch podm\u00ednek a ne lidsk\u00fdm okem, ale \"ne\u00faplatnou\" technologi\u00ed.<\/p>\n

Zjednodu\u0161en\u011b \u0159e\u010deno, kalibra\u010dn\u00ed za\u0159\u00edzen\u00ed monitoru dok\u00e1\u017ee zm\u011b\u0159it v\u00e1\u0161 monitor a p\u0159esn\u011b ur\u010dit, \"kolik\" barev dok\u00e1\u017ee v\u00e1\u0161 monitor zobrazit a \"jak \u0161patn\u011b\" zobrazuje barvy. A pokud to po\u010d\u00edta\u010d v\u00ed, m\u016f\u017ee monitor opravit.<\/p>\n

Jin\u00e9 m\u011b\u0159ic\u00ed za\u0159\u00edzen\u00ed m\u016f\u017ee vys\u00edlat neutr\u00e1ln\u00ed b\u00edl\u00e9 sv\u011btlo na pap\u00edr a m\u011b\u0159it odra\u017eenou barvu. V z\u00e1vislosti na tiskov\u00e9m procesu a pap\u00edru vypad\u00e1 barva \u00fapln\u011b jinak, ale m\u011b\u0159ic\u00ed za\u0159\u00edzen\u00ed op\u011bt vid\u00ed, \"kolik\" barvy m\u016f\u017ee tisk zn\u00e1zornit a \"jak \u0161patn\u011b\" tisk barvu zn\u00e1zor\u0148uje. A pokud to po\u010d\u00edta\u010d v\u00ed, m\u016f\u017ee to korigovat. A:<\/p>\n

Pokud po\u010d\u00edta\u010d zn\u00e1 barevn\u00e9 pod\u00e1n\u00ed monitoru a tisk\u00e1rny, m\u016f\u017ee toto pod\u00e1n\u00ed opravit a upravit tak, aby ob\u011b odpov\u00eddala stejn\u00e9 barv\u011b. To samoz\u0159ejm\u011b funguje pouze v p\u0159\u00edpad\u011b, \u017ee je zn\u00e1ma a standardizov\u00e1na tak\u00e9 barva a jas sv\u011btla osv\u011btluj\u00edc\u00edho pap\u00edr.<\/p>\n

A jak tento d\u016fkaz funguje? Jednodu\u0161e:
\nPokud po\u010d\u00edta\u010d tak\u00e9 v\u00ed, \u017ee kone\u010dn\u00fd ti\u0161t\u011bn\u00fd produkt bude ve form\u00e1tu Ofsetov\u00fd tisk<\/a> na Pap\u00edr pro tisk obr\u00e1zk\u016f<\/a> m\u00e1 b\u00fdt vyti\u0161t\u011bn a zn\u00e1 barevn\u00e9 pod\u00e1n\u00ed tohoto tiskov\u00e9ho procesu, pak jej m\u016f\u017ee simulovat na monitoru a na inkoustov\u00e9 tisk\u00e1rn\u011b. Na monitoru je toto barevn\u011b konzistentn\u00ed zobrazen\u00ed tzv. \"Softproof<\/a>\", barevn\u011b p\u0159esn\u00fd n\u00e1hled pozd\u011bj\u0161\u00edho tisku na inkoustov\u00e9 tisk\u00e1rn\u011b se naz\u00fdv\u00e1 \"n\u00e1hled\" nebo \"D\u016fkaz o smlouv\u011b<\/a>\".<\/strong><\/p>\n

Tento inkoustov\u00fd tisk mus\u00ed b\u00fdt velmi p\u0159esn\u00fd a v Barevn\u00fd prostor<\/a> a simulace barev spl\u0148uj\u00ed nejvy\u0161\u0161\u00ed n\u00e1roky. A proto\u017ee z\u00e1kladn\u00ed technologie zpracov\u00e1n\u00ed obrazu, porovn\u00e1v\u00e1n\u00ed barev a m\u011b\u0159ic\u00ed technologie nejsou zrovna levn\u00e9, je nutn\u00e9 je D\u016fkazy<\/a> tak\u00e9 st\u00e1le v\u011bt\u0161inou \"drah\u00e9\" inkoustov\u00e9 v\u00fdtisky. D\u00edky nov\u00fdm tiskov\u00fdm syst\u00e9m\u016fm a levn\u011bj\u0161\u00edm a kvalitn\u011bj\u0161\u00edm m\u011b\u0159ic\u00edm technologi\u00edm se v\u0161ak i zde ceny v posledn\u00edch letech v\u00fdrazn\u011b sn\u00ed\u017eily.<\/p>","protected":false},"excerpt":{"rendered":"

Mo\u017en\u00e1 si \u0159\u00edk\u00e1te, \u017ee barva je barva. To je pravda. Ale zkou\u0161eli jste n\u011bkdy vysv\u011btlit kamar\u00e1dce po telefonu barvu sv\u00e9ho nov\u00e9ho auta nebo nov\u00e9 \u010derven\u00e9 kabelky? Pak si uv\u011bdom\u00edte, \u017ee lidsk\u00e9 rozpozn\u00e1v\u00e1n\u00ed barev a jejich reprodukce v jin\u00e9m m\u00e9diu jsou velmi obt\u00ed\u017en\u00e9. Tot\u00e9\u017e plat\u00ed pro po\u010d\u00edta\u010de - l\u00e9pe \u0159e\u010deno: monitory, a tisk\u00e1rny - tedy: laserov\u00e9 tisk\u00e1rny, inkoustov\u00e9 tisk\u00e1rny nebo tisk novin \u010di ofsetov\u00fd tisk bro\u017eur. Pro\u010d je \u010derven\u00e1 barva na monitoru jin\u00e1 ne\u017e p\u0159esn\u011b stejn\u00e1 \u010derven\u00e1 barva vyti\u0161t\u011bn\u00e1 na pap\u00ed\u0159e? Jednodu\u0161e: Dejte ... <\/p>\n

P\u0159e\u010dt\u011bte si v\u00edce<\/a><\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[1,443,441,25],"tags":[248,529,250,532,541,249],"class_list":["post-225","post","type-post","status-publish","format-standard","hentry","category-allgemein","category-haeufige-fragen-zu-proofs","category-layout-tipps-und-tricks","category-licht-und-normlicht","tag-additive-farbmischung","tag-cmyk","tag-druck","tag-monitor","tag-rgb","tag-subtraktive-farbmischung","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50","no-featured-image-padding"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.proof.de\/cs\/wp-json\/wp\/v2\/posts\/225","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.proof.de\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.proof.de\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.proof.de\/cs\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.proof.de\/cs\/wp-json\/wp\/v2\/comments?post=225"}],"version-history":[{"count":11,"href":"https:\/\/www.proof.de\/cs\/wp-json\/wp\/v2\/posts\/225\/revisions"}],"predecessor-version":[{"id":3710,"href":"https:\/\/www.proof.de\/cs\/wp-json\/wp\/v2\/posts\/225\/revisions\/3710"}],"wp:attachment":[{"href":"https:\/\/www.proof.de\/cs\/wp-json\/wp\/v2\/media?parent=225"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.proof.de\/cs\/wp-json\/wp\/v2\/categories?post=225"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.proof.de\/cs\/wp-json\/wp\/v2\/tags?post=225"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}