{"id":5949,"date":"2022-07-21T07:23:49","date_gmt":"2022-07-21T05:23:49","guid":{"rendered":"https:\/\/www.profartspla.info\/wordpress\/?post_type=glossary&#038;p=5949"},"modified":"2023-01-28T20:11:24","modified_gmt":"2023-01-28T19:11:24","slug":"focale","status":"publish","type":"glossary","link":"https:\/\/www.profartspla.site\/wordpress\/Dictionnaire\/focale\/","title":{"rendered":"Focale"},"content":{"rendered":"<p class=\"has-text-align-center has-medium-font-size\"><strong><a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_0597b3ae987f60bb5a9c0b484ac2a9d3\"  href=\"https:\/\/www.profartspla.site\/wordpress\/Dictionnaire\/focale\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>Focale<\/a><\/strong><\/p>\n\n\n\n<p>La&nbsp;<strong><a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_0597b3ae987f60bb5a9c0b484ac2a9d3\"  href=\"https:\/\/www.profartspla.site\/wordpress\/Dictionnaire\/focale\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>focale<\/a><\/strong>&nbsp;<em>(encore appel&eacute;e&nbsp;<strong>distance <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_0597b3ae987f60bb5a9c0b484ac2a9d3\"  href=\"https:\/\/www.profartspla.site\/wordpress\/Dictionnaire\/focale\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>focale<\/a><\/strong>&nbsp;ou&nbsp;<strong>longueur <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_0597b3ae987f60bb5a9c0b484ac2a9d3\"  href=\"https:\/\/www.profartspla.site\/wordpress\/Dictionnaire\/focale\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>focale<\/a><\/strong>)<\/em>&nbsp;c&rsquo;est la distance entre le centre optique de l&rsquo;objectif et le foyer.<\/p>\n\n\n\n<p>Elle est exprim&eacute;e en&nbsp;<strong>millim&egrave;tres<\/strong>&nbsp;(mm), et vous la voyez sur l&rsquo;objectif. Elle indique en gros, le &laquo;&nbsp;niveau de zoom&nbsp;&raquo;.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>une <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_0597b3ae987f60bb5a9c0b484ac2a9d3\"  href=\"https:\/\/www.profartspla.site\/wordpress\/Dictionnaire\/focale\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>focale<\/a>&nbsp;<strong>standard<\/strong>&nbsp;<em>(50 mm ou 35 mm selon la <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_b2797aa5ea077dd4f29a260f9a64a4da\"  href=\"https:\/\/www.profartspla.site\/wordpress\/Dictionnaire\/taille-sculpture\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>taille<\/a> du capteur)<\/em>&nbsp;qui reproduit &agrave; peu pr&egrave;s l&rsquo;<a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_6dcf87ad32e22014290cd07392f8cfb5\"  href=\"https:\/\/www.profartspla.site\/wordpress\/Dictionnaire\/angle-de-vue\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>angle de vue<\/a> de l&rsquo;&oelig;il humain<\/li><li>une <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_0597b3ae987f60bb5a9c0b484ac2a9d3\"  href=\"https:\/\/www.profartspla.site\/wordpress\/Dictionnaire\/focale\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>focale<\/a>&nbsp;<strong>grand-angle<\/strong>&nbsp;<em>(18 mm par exemple)<\/em>, qui diminue la <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_b2797aa5ea077dd4f29a260f9a64a4da\"  href=\"https:\/\/www.profartspla.site\/wordpress\/Dictionnaire\/taille-sculpture\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>taille<\/a> des objets et donne un <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_6dcf87ad32e22014290cd07392f8cfb5\"  href=\"https:\/\/www.profartspla.site\/wordpress\/Dictionnaire\/angle-de-vue\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>angle de vue<\/a> plus grand, comme son nom l&rsquo;indique<\/li><li>une <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_0597b3ae987f60bb5a9c0b484ac2a9d3\"  href=\"https:\/\/www.profartspla.site\/wordpress\/Dictionnaire\/focale\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>focale<\/a>&nbsp;<strong>t&eacute;l&eacute;objectif<\/strong>&nbsp;<em>(250 mm par exemple)<\/em>, qui agrandit la <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_b2797aa5ea077dd4f29a260f9a64a4da\"  href=\"https:\/\/www.profartspla.site\/wordpress\/Dictionnaire\/taille-sculpture\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>taille<\/a> des objets, mais donne aussi un <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_6dcf87ad32e22014290cd07392f8cfb5\"  href=\"https:\/\/www.profartspla.site\/wordpress\/Dictionnaire\/angle-de-vue\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>angle de vue<\/a> plus &eacute;troit<\/li><\/ul>\n\n\n\n<h4 class=\"has-text-align-center has-small-font-size wp-block-heading\"><strong>Source de la&nbsp;vid&eacute;o :&nbsp;<a href=\"https:\/\/youtu.be\/ZFrha6hX4JU\">https:\/\/youtu.be\/ZFrha6hX4JU<\/a>&nbsp;&nbsp;<\/strong><\/h4>\n\n\n\n<div align=\"center\"><iframe loading=\"lazy\" width=\"560\" height=\"315\" sandbox=\"allow-same-origin allow-scripts allow-popups\" src=\"https:\/\/tube-nancy.beta.education.fr\/videos\/embed\/0ed80000-6b43-4423-a44d-43f0497c6ccc\" frameborder=\"0\" allowfullscreen><\/iframe><\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"has-text-align-center\">Sur cette <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_bc72183bbfc82066d6306e6195a2bfff\"  href=\"https:\/\/www.profartspla.site\/wordpress\/Dictionnaire\/animation\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>animation<\/a>&nbsp;<a rel=\"noreferrer noopener\" href=\"https:\/\/giphy.com\/gifs\/lens-focal-comparsion-l2JJu55Y2LSvkbBqo\" target=\"_blank\">publi&eacute;e sur Giphy<\/a>, on voit un sujet identique photographi&eacute; &agrave; des distances focales diff&eacute;rentes, de 16mm &agrave; 200mm, soit <strong>du grand-angle au t&eacute;l&eacute;objectif<\/strong>. <strong>Le photographe a pris soin de se rapprocher ou de s&rsquo;&eacute;loigner du sujet afin qu&rsquo;il conserve la m&ecirc;me proportion dans l&rsquo;<a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_32115a200381ae17929ebaf3b6ae4e91\"  href=\"https:\/\/www.profartspla.site\/wordpress\/Dictionnaire\/image\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>image<\/a><\/strong>. Cette <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_bc72183bbfc82066d6306e6195a2bfff\"  href=\"https:\/\/www.profartspla.site\/wordpress\/Dictionnaire\/animation\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>animation<\/a> nous montre une chose importante :&nbsp;<strong>selon la <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_0597b3ae987f60bb5a9c0b484ac2a9d3\"  href=\"https:\/\/www.profartspla.site\/wordpress\/Dictionnaire\/focale\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>focale<\/a> utilis&eacute;e, la compression et le rendu de la photo change radicalement<\/strong>. Au grand-angle, vous allez photographier votre sujet ainsi qu&rsquo;une grande partie de l&rsquo;<a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_919d6929a59418f34859cbf11f0c7582\"  href=\"https:\/\/www.profartspla.site\/wordpress\/Dictionnaire\/arriere-plan\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>arri&egrave;re-plan<\/a>, alors qu&rsquo;au t&eacute;l&eacute;objectif seule une petite partie de l&rsquo;<a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_919d6929a59418f34859cbf11f0c7582\"  href=\"https:\/\/www.profartspla.site\/wordpress\/Dictionnaire\/arriere-plan\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>arri&egrave;re-plan<\/a> est apparente.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/www.profartspla.site\/wordpress\/wp-content\/uploads\/2022\/07\/distance-focale.gif?w=925&#038;ssl=1\" alt=\"\" class=\"wp-image-5953\"\/><\/figure>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"has-text-align-center\">Un 50mm produira des images plus conformes &agrave; la r&eacute;alit&eacute; car elle se rapproche le plus de la vision humaine. Entre 35 et 50mm, les avis sont partag&eacute;s. Ce gif <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_bc72183bbfc82066d6306e6195a2bfff\"  href=\"https:\/\/www.profartspla.site\/wordpress\/Dictionnaire\/animation\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>anim&eacute;<\/a> nous montre pr&eacute;cis&eacute;ment comment le changement de longueur <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_0597b3ae987f60bb5a9c0b484ac2a9d3\"  href=\"https:\/\/www.profartspla.site\/wordpress\/Dictionnaire\/focale\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>focale<\/a> affecte le visage d&rsquo;une personne. Apr&egrave;s avoir vu cette <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"cmtt_bc72183bbfc82066d6306e6195a2bfff\"  href=\"https:\/\/www.profartspla.site\/wordpress\/Dictionnaire\/animation\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>animation<\/a>, vous comprendrez que le choix d&rsquo;une optique est tr&egrave;s important.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/i0.wp.com\/www.profartspla.site\/wordpress\/wp-content\/uploads\/2022\/07\/distance_focale2.gif?ssl=1\" target=\"_blank\" rel=\"noreferrer noopener\"><img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/www.profartspla.site\/wordpress\/wp-content\/uploads\/2022\/07\/distance_focale2.gif?w=925&#038;ssl=1\" alt=\"\" class=\"wp-image-5956\"\/><\/a><\/figure>\n<\/div><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Focale La&nbsp;focale&nbsp;(encore appel\u00e9e&nbsp;distance focale&nbsp;ou&nbsp;longueur focale)&nbsp;c\u2019est la distance entre le centre optique de l\u2019objectif et le foyer. Elle est exprim\u00e9e en&nbsp;millim\u00e8tres&nbsp;(mm), et vous la voyez sur l\u2019objectif. Elle indique en gros, le \u00ab&nbsp;niveau de zoom&nbsp;\u00bb. une focale\u00a0standard\u00a0(50 mm ou 35 mm selon la taille du capteur)\u00a0qui reproduit \u00e0 peu pr\u00e8s l\u2019angle de vue de l\u2019\u0153il humain &hellip; <\/p>\n","protected":false},"author":1,"featured_media":0,"menu_order":0,"template":"elementor_header_footer","meta":{"footnotes":""},"class_list":["post-5949","glossary","type-glossary","status-publish","hentry"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.profartspla.site\/wordpress\/wp-json\/wp\/v2\/glossary\/5949","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.profartspla.site\/wordpress\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/www.profartspla.site\/wordpress\/wp-json\/wp\/v2\/types\/glossary"}],"author":[{"embeddable":true,"href":"https:\/\/www.profartspla.site\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"version-history":[{"count":4,"href":"https:\/\/www.profartspla.site\/wordpress\/wp-json\/wp\/v2\/glossary\/5949\/revisions"}],"predecessor-version":[{"id":5957,"href":"https:\/\/www.profartspla.site\/wordpress\/wp-json\/wp\/v2\/glossary\/5949\/revisions\/5957"}],"wp:attachment":[{"href":"https:\/\/www.profartspla.site\/wordpress\/wp-json\/wp\/v2\/media?parent=5949"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}