{"id":107,"date":"2012-01-26T01:57:12","date_gmt":"2012-01-26T00:57:12","guid":{"rendered":"http:\/\/www.proof.de\/?p=107"},"modified":"2020-05-08T12:01:56","modified_gmt":"2020-05-08T10:01:56","slug":"normlicht-d50-oder-d50-oder-was","status":"publish","type":"post","link":"https:\/\/proof.proofen.de\/pt\/normlicht-d50-oder-d50-oder-was\/","title":{"rendered":"Luz padr\u00e3o e efeito de metamerismo"},"content":{"rendered":"<div class=\"kk-star-ratings kksr-auto kksr-align-right kksr-valign-top\" data-payload='{\"align\":\"right\",\"id\":\"107\",\"slug\":\"default\",\"valign\":\"top\",\"ignore\":\"\",\"reference\":\"auto\",\"class\":\"\",\"count\":\"0\",\"legendonly\":\"\",\"readonly\":\"\",\"score\":\"0\",\"starsonly\":\"\",\"best\":\"5\",\"gap\":\"5\",\"greet\":\"Jetzt bewerten\",\"legend\":\"0\\\/5 - (0 votes)\",\"size\":\"24\",\"title\":\"Normlicht und Metamerie-Effekt\",\"width\":\"0\",\"_legend\":\"{score}\\\/{best} - ({count} {votes})\",\"font_factor\":\"1.25\"}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 0px;\">\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 19.2px;\">\n            <span class=\"kksr-muted\">Avalie agora<\/span>\n    <\/div>\n    <\/div>\n<p>A <a href=\"https:\/\/proof.proofen.de\/pt\/lexico-4\/prova\/\" target=\"_self\" title=\"Uma prova (correctamente: prova de contrato) \u00e9 um dispositivo de prova certificado ISO 12647-7 para a ind\u00fastria das artes gr\u00e1ficas. Uma prova simula o colorido da impress\u00e3o offset ou da impress\u00e3o de gravura a cores e juridicamente vinculativa dentro das estreitas toler\u00e2ncias da norma ISO.\" class=\"encyclopedia\">Comprova\u00e7\u00e3o<\/a> \u00e9 t\u00e3o bom quanto a ilumina\u00e7\u00e3o sob a qual \u00e9 visto. O simples facto de ir \u00e0 janela, ou de acender a luz ao anoitecer, n\u00e3o ajuda: \u00e0 janela, entre Dezembro e Julho, entre as 8 e as 20 horas, entre o dia nublado e o dia de sol, h\u00e1 uma enorme diferen\u00e7a de ilumina\u00e7\u00e3o que torna imposs\u00edvel qualquer avalia\u00e7\u00e3o de cor. E quem acende a luz, normalmente acende uma l\u00e2mpada de 2700 <a href=\"https:\/\/proof.proofen.de\/pt\/lexico-4\/kelvin\/\" target=\"_self\" title=\"O Kelvin \u00e9 uma unidade de temperatura absoluta usada na ci\u00eancia. A luz do dia \u00e9 definida como 6500 Kelvin, para imprimir uma temperatura de cor de 5000 Kelvin aplica-se na Europa com a luz padr\u00e3o D50.\" class=\"encyclopedia\">Kelvin<\/a> a - ou pior ainda: uma l\u00e2mpada economizadora de energia que, de alguma forma, brilha em certos espectros... um desastre!<\/p>\n<p>Na impress\u00e3o est\u00e3o as raz\u00f5es para <a href=\"https:\/\/proof.proofen.de\/pt\/lexico-4\/metamerismo\/\" target=\"_self\" title=\"O termo metamerismo refere-se ao efeito de que duas coisas podem parecer iguais sob uma luz, mas completamente diferentes sob outra luz.\" class=\"encyclopedia\">Metamerismo<\/a>-(em suma: duas cores parecem id\u00eanticas sob uma luz, mas completamente diferentes sob outra), em especial devido \u00e0s diferentes tecnologias de impress\u00e3o. As cores que parecem iguais sob uma l\u00e2mpada podem de repente parecer completamente diferentes sob um tubo de n\u00e9on.<\/p>\n<p>Nos \u00faltimos anos, o <a href=\"https:\/\/proof.proofen.de\/pt\/lexico-4\/provas-digitais\/\" target=\"_self\" title=\"As provas digitais (correctamente: provas de contrato) s\u00e3o uma ferramenta de prova certificada ISO para a ind\u00fastria das artes gr\u00e1ficas. As provas digitais simulam o colorido da impress\u00e3o offset ou de gravura de uma forma a cores e legalmente vinculativa dentro das estreitas toler\u00e2ncias da norma ISO 12647-7. Actualmente, s\u00e3o quase exclusivamente calculadas atrav\u00e9s de um RIP e depois produzidas com impressoras a jacto de tinta em pap\u00e9is especiais para provas.\" class=\"encyclopedia\">Provas digitais<\/a> a impress\u00e3o \u00e0 base de tinta ganhou aceita\u00e7\u00e3o no sector das provas. Uma vez que a tinta \u00e9 utilizada para a impress\u00e3o, tem de ser utilizado papel revestido especial, que n\u00e3o se assemelha de forma alguma \u00e0 tiragem subsequente. Quem j\u00e1 tentou imprimir em papel revestido brilhante com uma impressora de jacto de tinta sabe: a tinta nunca dura! Por conseguinte, o metamerismo est\u00e1 sempre envolvido quando uma prova \u00e9 impressa com um <a href=\"https:\/\/proof.proofen.de\/pt\/lexico-4\/impressao-em-offset\/\" target=\"_self\" title=\"A impress\u00e3o em offset \u00e9 um processo de impress\u00e3o indirecta. Indirecto significa que o forme de impress\u00e3o e o substrato n\u00e3o entram em contacto directo um com o outro, mas um meio \u00e9 utilizado como meio de transfer\u00eancia. \u00c9 o processo de impress\u00e3o mais difundido. Existem: - impressoras offset de folhas e - impressoras offset web.\" class=\"encyclopedia\">Impress\u00e3o em offset<\/a> deve ser comparado.<\/p>\n<p>\u00c9 particularmente importante a luz sob a qual a prova e a produ\u00e7\u00e3o s\u00e3o visualizadas.<\/p>\n<p>A norma ISO 3664 regula a ilumina\u00e7\u00e3o normalizada que \u00e9 necess\u00e1ria para a considera\u00e7\u00e3o de <a href=\"https:\/\/proof.proofen.de\/pt\/lexico-4\/provas-2\/\" target=\"_self\" title=\"No sector da impress\u00e3o, as provas (ou impress\u00f5es de provas) referem-se \u00e0 encaderna\u00e7\u00e3o a cores e \u00e0 simula\u00e7\u00e3o legalmente vinculativa de um resultado de impress\u00e3o para efeitos de controlo. A norma respons\u00e1vel pelas provas \u00e9 a ISO 12647-7:2016, ou seja, a revis\u00e3o actual de 2016.\" class=\"encyclopedia\">Provas<\/a> e a impress\u00e3o \u00e9 importante. Assim <a href=\"https:\/\/proof.proofen.de\/pt\/lexico-4\/d50\/\" target=\"_self\" title=\"D50 \u00e9 a luz padr\u00e3o da ind\u00fastria gr\u00e1fica. As provas s\u00f3 podem ser combinadas por cores sob a luz padr\u00e3o D50,\" class=\"encyclopedia\">D50<\/a> j\u00e1 n\u00e3o \u00e9 D50: A comiss\u00e3o internacional de ilumina\u00e7\u00e3o CIE reviu a norma ISO 3664 nos \u00faltimos anos e adaptou-a \u00e0s circunst\u00e2ncias actuais. Se os componentes UV eram estritamente proibidos no passado, agora fazem parte da norma. Porque, no passado, a aten\u00e7\u00e3o centrava-se na conformidade do diapositivo e da impress\u00e3o, ao passo que actualmente se centra no monitor, <a href=\"https:\/\/proof.proofen.de\/pt\/lexico-4\/a-prova-digital\/\" target=\"_self\" title=\"Uma prova digital (correctamente: prova de contrato) \u00e9 um dispositivo de prova certificado ISO 12647-7 para a ind\u00fastria das artes gr\u00e1ficas. Uma prova digital simula o colorido da impress\u00e3o offset ou da impress\u00e3o de gravura a cores e legalmente vinculativa dentro das estreitas toler\u00e2ncias da norma ISO.\" class=\"encyclopedia\">Digitalproof<\/a> e a impress\u00e3o offset s\u00e3o importantes. Por conseguinte, as provas devem ser sempre visualizadas em D50 Normal para garantir que s\u00e3o verdadeiramente \"exactas\" na sua percep\u00e7\u00e3o da cor.<\/p>\n<p>Para aqueles que pretendem verificar os efeitos do metamerismo, o<a title=\"Indicador de temperatura de cor UGRA\" href=\"https:\/\/www.ugra.ch\/produkt\/ugra-light-indicator-strip-d50\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Indicador luminoso UGRA<\/a> recomendado. Com estas tiras, os efeitos do metamerismo podem ser verificados de forma muito r\u00e1pida e clara.<\/p>","protected":false},"excerpt":{"rendered":"<p>Uma prova \u00e9 t\u00e3o boa quanto a ilumina\u00e7\u00e3o sob a qual \u00e9 vista. \u00c9 in\u00fatil ir simplesmente \u00e0 janela ou acender a luz ao anoitecer: \u00e0 janela, entre dezembro e julho, entre as 8 e as 20 horas, entre o dia nublado e o dia de sol, h\u00e1 uma enorme diferen\u00e7a de ilumina\u00e7\u00e3o que torna imposs\u00edvel qualquer avalia\u00e7\u00e3o de cor. E se acender a luz, normalmente acende uma l\u00e2mpada de 2700 Kelvin - ou pior ainda: uma l\u00e2mpada economizadora de energia que, de alguma forma, brilha numa esp\u00e9cie de espetro... um desastre! Na impress\u00e3o ... <\/p>\n<p class=\"read-more-container\"><a title=\"Luz padr\u00e3o e efeito de metamerismo\" class=\"read-more button\" href=\"https:\/\/proof.proofen.de\/pt\/normlicht-d50-oder-d50-oder-was\/#more-107\" aria-label=\"Read more about Normlicht und Metamerie-Effekt\">Leia mais<\/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":[18,25,437,7,442],"tags":[533,277,1054,551,47,525],"class_list":["post-107","post","type-post","status-publish","format-standard","hentry","category-haufige-fragen","category-licht-und-normlicht","category-proof-software-und-technik","category-proof-wissen","category-prozessstandard-offsetdruck-proof-wissen","tag-d50","tag-farbtemperatur","tag-farbtemperatur-indikator","tag-metamerie","tag-normlicht-2","tag-ugra","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50","no-featured-image-padding"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.0.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"Unter welchen Lichtbedingungen muss ein Proof eigentlich betrachtet werden? 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