{"id":259619,"date":"2025-05-24T22:31:59","date_gmt":"2025-05-24T20:31:59","guid":{"rendered":"https:\/\/www.dragonstreetphotography.eu\/?p=259619"},"modified":"2025-12-26T12:17:00","modified_gmt":"2025-12-26T11:17:00","slug":"pourquoi-convertir-un-jpeg-en-tiff","status":"publish","type":"post","link":"https:\/\/www.dragonstreetphotography.eu\/fr\/pourquoi-convertir-un-jpeg-en-tiff\/","title":{"rendered":"Pourquoi convertir un JPEG,<br> un HEIC en TIFF 16 bits pour la retouche ?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\" data-block-type=\"core\">M\u00eame si vous travaillez principalement en RAW, vous avez sans doute dans votre catalogue des images en JPEG ou en HEIC (notamment issues de votre smartphone ou d\u2019un appareil photo l\u00e9ger). La question peut alors se poser : <strong>est-il vraiment utile de convertir un fichier jpeg 8 bits en TIFF 16 bits avant de les retoucher dans Photoshop ?<\/strong> <strong>et surtout pourquoi ? <\/strong> <\/p>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-546159a\" data-block-id=\"546159a\"><style>.stk-546159a {margin-bottom:50px !important;}<\/style><p class=\"stk-block-text__text\">La r\u00e9ponse est oui, il y a plus d&#8217;int\u00e9r\u00eat que l&#8217;on pourrait l&#8217;imaginer et dans cet article je vous explique pourquoi. &#x1f913;<\/p><\/div>\n\n\n\n<nav class=\"wp-block-stackable-table-of-contents stk-block-table-of-contents stk-block stk-a971671 stk-block-background\" data-block-id=\"a971671\"><style>.stk-a971671 .stk-table-of-contents__table{column-count:1 !important;}html{scroll-behavior:smooth !important;}.stk-a971671 .stk-table-of-contents__title{font-size:20px !important;color:var(--theme-palette-color-1, #1f093c) !important;font-weight:bold !important;}.stk-a971671 {background-color:var(--theme-palette-color-5, #e1e8ed) !important;border-top-left-radius:5px !important;border-top-right-radius:5px !important;border-bottom-right-radius:5px !important;border-bottom-left-radius:5px !important;overflow:hidden !important;box-shadow:0px 5px 5px 1px #00000040 !important;border-style:solid !important;border-color:var(--theme-palette-color-2, #a6003c  ) !important;border-top-width:1px !important;border-right-width:1px !important;border-bottom-width:1px !important;border-left-width:1px !important;margin-bottom:50px !important;}.stk-a971671:before{background-color:var(--theme-palette-color-5, #e1e8ed) !important;}@media screen and (max-width:999px){.stk-a971671 .stk-table-of-contents__title{font-size:20px !important;}}<\/style><p class=\"stk-table-of-contents__title has-text-color\">Sommaire <\/p><ul class=\"stk-table-of-contents__table\"><li><a href=\"#1-comprendre-la-difference-entre-8-bits-et-16-bits\">1. Comprendre la diff\u00e9rence entre 8 bits et 16 bits<\/a><\/li><li><a href=\"#2-pourquoi-convertir-un-fichier-8-bits-en-tiff-16-bits\">2. Pourquoi convertir un fichier 8 bits en TIFF 16 bits ?<\/a><\/li><li><a href=\"#3-en-pratique-ce-que-cela-change-dans-votre-flux-de-travail\">3. En pratique : ce que cela change dans votre flux de travail<\/a><\/li><li><a href=\"#4-dans-quels-cas-cette-conversion-est-elle-vraiment-utile\">4. Dans quels cas cette conversion est-elle vraiment utile ?<\/a><\/li><li><a href=\"#5-comment-convertir-en-tiff-16-bits-simplement\">5. Comment convertir en TIFF 16 bits simplement ?<\/a><\/li><li><a href=\"#6-conclusion-un-petit-geste-un-gain-de-qualite\">6. Conclusion : un petit geste, un gain de qualit\u00e9<\/a><\/li><\/ul><\/nav>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-2e5b381\" id=\"1-comprendre-la-difference-entre-8-bits-et-16-bits\" data-block-id=\"2e5b381\"><style>.stk-2e5b381 .stk-block-heading__bottom-line{background-color:var(--theme-palette-color-2, #a6003c  ) !important;}<\/style><h2 class=\"stk-block-heading__text\">1. Comprendre la diff\u00e9rence entre 8 bits et 16 bits<\/h2><div class=\"stk-block-heading__bottom-line\"><\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\" data-block-type=\"core\">Les fichiers JPEG, HEIC ou HEIF sont tous des fichiers <strong>8 bits par canal<\/strong>. Cela signifie qu\u2019ils peuvent contenir jusqu\u2019\u00e0 <strong>256 nuances par canal RVB<\/strong> , soit environ <strong>16 millions de couleurs<\/strong>. \u00c0 premi\u00e8re vue, cela semble d\u00e9j\u00e0 \u00e9norme. Mais dans la r\u00e9alit\u00e9 du post-traitement photo, <strong>ces 256 niveaux vont devenir tr\u00e8s rapidement limitants<\/strong>.<\/p>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-9f66caa\" data-block-id=\"9f66caa\"><style>.stk-9f66caa {margin-bottom:50px !important;}<\/style><p class=\"stk-block-text__text\">\u00c0 l&#8217;inverse, un fichier <strong>16 bits par canal<\/strong> permet <strong>65 536 nuances par canal<\/strong>, soit <strong>plus de 280 000 milliards de couleurs possibles<\/strong>. C\u2019est cette richesse qui permet des ajustements plus souples, <strong>notamment sur les d\u00e9grad\u00e9s subtils de ciel ou de peau par exemple.<\/strong><\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-b6579ae\" id=\"2-pourquoi-convertir-un-fichier-8-bits-en-tiff-16-bits\" data-block-id=\"b6579ae\"><style>.stk-b6579ae .stk-block-heading__bottom-line{background-color:var(--theme-palette-color-2, #a6003c  ) !important;}<\/style><h2 class=\"stk-block-heading__text\">2. Pourquoi convertir un fichier 8 bits en TIFF 16 bits ?<\/h2><div class=\"stk-block-heading__bottom-line\"><\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-d0771eb stk-block-background\" data-block-id=\"d0771eb\"><style>.stk-d0771eb {background-color:var(--theme-palette-color-5, #e1e8ed) !important;}.stk-d0771eb:before{background-color:var(--theme-palette-color-5, #e1e8ed) !important;}<\/style><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-d0771eb-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-4af86b1\" data-v=\"4\" data-block-id=\"4af86b1\"><style>.stk-4af86b1 {align-self:center !important;}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-4af86b1-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-4af86b1-inner-blocks\">\n<p class=\"wp-block-paragraph\" data-block-type=\"core\">C\u2019est un fait : <strong>vous ne retrouverez pas les informations perdues<\/strong> lors de la compression initiale (par exemple depuis un JPEG). Alors pourquoi convertir ? Parce que <strong>Photoshop effectue ses calculs internes avec une pr\u00e9cision bien meilleure en 16 bits <\/strong>, ce qui r\u00e9duit les artefacts visuels lors de l\u2019\u00e9dition.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"voici-les-benefices-concrets\" data-block-type=\"core\">Voici les b\u00e9n\u00e9fices concrets :<\/h4>\n\n\n\n<div class=\"wp-block-stackable-icon-list stk-block-icon-list stk-block stk-77d7b54\" data-block-id=\"77d7b54\"><style>.stk-77d7b54 {--stk-icon-list-row-gap:5px !important;--stk-icon-list-marker-color:var(--theme-palette-color-2, #a6003c  ) !important;margin-bottom:50px !important;}.stk-77d7b54 .stk-block-icon-list-item__content{align-items:baseline !important;}<\/style><svg style=\"display:none\"><defs><g id=\"stk-icon-list__icon-svg-def-77d7b54\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 190 190\"><polygon points=\"173.8,28.4 60.4,141.8 15.7,97.2 5.1,107.8 60.4,163 184.4,39 173.8,28.4\"\/><\/svg><\/g><\/defs><\/svg><ul class=\"stk-block-icon-list__ul stk-block-icon-list--column\">\n<li class=\"wp-block-stackable-icon-list-item stk-block-icon-list-item stk-block stk-4b2ca91\" data-block-id=\"4b2ca91\"><div class=\"stk-block-icon-list-item__content\"><span class=\"stk--svg-wrapper\"><div class=\"stk--inner-svg\"><svg aria-hidden=\"true\" width=\"32\" height=\"32\"><use xlink:href=\"#stk-icon-list__icon-svg-def-77d7b54\"><\/use><\/svg><\/div><\/span><span class=\"stk-block-icon-list-item__text\"><strong>Moins de post\u00e9risation<\/strong> : les d\u00e9grad\u00e9s seront plus doux, notamment dans les ciels ou les arri\u00e8re-plans flous.<\/span><\/div><\/li>\n\n\n\n<li class=\"wp-block-stackable-icon-list-item stk-block-icon-list-item stk-block stk-733d5b9\" data-block-id=\"733d5b9\"><div class=\"stk-block-icon-list-item__content\"><span class=\"stk--svg-wrapper\"><div class=\"stk--inner-svg\"><svg aria-hidden=\"true\" width=\"32\" height=\"32\"><use xlink:href=\"#stk-icon-list__icon-svg-def-77d7b54\"><\/use><\/svg><\/div><\/span><span class=\"stk-block-icon-list-item__text\"><strong>R\u00e9duction des artefacts de compression<\/strong> lors des ajustements de courbes ou de luminosit\u00e9.<\/span><\/div><\/li>\n\n\n\n<li class=\"wp-block-stackable-icon-list-item stk-block-icon-list-item stk-block stk-3d12688\" data-block-id=\"3d12688\"><div class=\"stk-block-icon-list-item__content\"><span class=\"stk--svg-wrapper\"><div class=\"stk--inner-svg\"><svg aria-hidden=\"true\" width=\"32\" height=\"32\"><use xlink:href=\"#stk-icon-list__icon-svg-def-77d7b54\"><\/use><\/svg><\/div><\/span><span class=\"stk-block-icon-list-item__text\"><strong>Calculs interm\u00e9diaires plus propres<\/strong> : les calques d\u2019ajustement (courbes, niveaux, exposition) produiront un rendu plus lisse.<\/span><\/div><\/li>\n\n\n\n<li class=\"wp-block-stackable-icon-list-item stk-block-icon-list-item stk-block stk-23ae776\" data-block-id=\"23ae776\"><div class=\"stk-block-icon-list-item__content\"><span class=\"stk--svg-wrapper\"><div class=\"stk--inner-svg\"><svg aria-hidden=\"true\" width=\"32\" height=\"32\"><use xlink:href=\"#stk-icon-list__icon-svg-def-77d7b54\"><\/use><\/svg><\/div><\/span><span class=\"stk-block-icon-list-item__text\"><strong>Masques de luminosit\u00e9 plus pr\u00e9cis<\/strong> (id\u00e9al avec des plugins comme <a href=\"https:\/\/www.dragonstreetphotography.net\/photoshop-masque-luminance-tk9-multimask\/\" target=\"_blank\" rel=\"noreferrer noopener\">le TK9<\/a> ou <a href=\"https:\/\/infinitecolorpanel.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">Infinite Color<\/a> dans Photoshop).<\/span><\/div><\/li>\n<\/ul><\/div>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-214174f\" data-v=\"4\" data-block-id=\"214174f\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-214174f-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-214174f-inner-blocks\">\n<div class=\"wp-block-stackable-image stk-block-image stk-block stk-7560f64 stk-block-background\" data-block-id=\"7560f64\"><style>.stk-7560f64 .stk-img-figcaption{text-align:center !important;font-size:12px !important;color:var(--theme-palette-color-1, #1f093c) !important;}.stk-7560f64 {background-color:var(--theme-palette-color-5, #e1e8ed) !important;box-shadow:0px 70px 90px -20px #4849794d !important;border-color:var(--theme-palette-color-8, #ffffff) !important;border-top-width:10px !important;border-right-width:10px !important;border-bottom-width:10px !important;border-left-width:10px !important;}.stk-7560f64:before{background-color:var(--theme-palette-color-5, #e1e8ed) !important;}@media screen and (max-width:999px){.stk-7560f64 .stk-img-figcaption{font-size:12px !important;}}<\/style><figure><span class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-259646\" src=\"https:\/\/www.dragonstreetphotography.eu\/wp-content\/uploads\/2025\/05\/Heic-Jpeg-Tiff-800px.jpg\" width=\"1024\" height=\"1024\" alt=\"Heic - Jpeg - Tiff\" srcset=\"https:\/\/www.dragonstreetphotography.eu\/wp-content\/uploads\/2025\/05\/Heic-Jpeg-Tiff-800px.jpg 1024w, https:\/\/www.dragonstreetphotography.eu\/wp-content\/uploads\/2025\/05\/Heic-Jpeg-Tiff-800px-300x300.jpg 300w, https:\/\/www.dragonstreetphotography.eu\/wp-content\/uploads\/2025\/05\/Heic-Jpeg-Tiff-800px-150x150.jpg 150w, https:\/\/www.dragonstreetphotography.eu\/wp-content\/uploads\/2025\/05\/Heic-Jpeg-Tiff-800px-768x768.jpg 768w, https:\/\/www.dragonstreetphotography.eu\/wp-content\/uploads\/2025\/05\/Heic-Jpeg-Tiff-800px-12x12.jpg 12w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/span><figcaption class=\"has-text-color stk-img-figcaption\"><em>Heic &#8211; Heif &#8211; Jpeg &#8211; Tiff<\/em><\/figcaption><\/figure><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-be15176\" id=\"3-en-pratique-ce-que-cela-change-dans-votre-flux-de-travail\" data-block-id=\"be15176\"><style>.stk-be15176 .stk-block-heading__bottom-line{background-color:var(--theme-palette-color-2, #a6003c  ) !important;}<\/style><h2 class=\"stk-block-heading__text\">3. En pratique : ce que cela change dans votre flux de travail<\/h2><div class=\"stk-block-heading__bottom-line\"><\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\" data-block-type=\"core\">Imaginons une photo de paysage au format HEIC prise en lumi\u00e8re rasante, avec un ciel pastel. En 8 bits, toute retouche sur l\u2019exposition ou la couleur peut provoquer des cassures visibles dans le ciel (effet &#8220;banding&#8221;). <strong>En la convertissant d\u2019abord en TIFF 16 bits, vous b\u00e9n\u00e9ficiez d\u2019une marge de man\u0153uvre plus large, m\u00eame si l\u2019information de d\u00e9part reste limit\u00e9e.<\/strong><\/p>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-6e971f5\" data-block-id=\"6e971f5\"><style>.stk-6e971f5 {margin-bottom:50px !important;}<\/style><p class=\"stk-block-text__text\">En clair : <strong>vous ne gagnez pas de d\u00e9tails, mais vous \u00e9vitez d\u2019en perdre davantage<\/strong> en retouche ! &#x1f62e;&#x200d;&#x1f4a8; <\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-8292710\" id=\"4-dans-quels-cas-cette-conversion-est-elle-vraiment-utile\" data-block-id=\"8292710\"><style>.stk-8292710 .stk-block-heading__bottom-line{background-color:var(--theme-palette-color-2, #a6003c  ) !important;}<\/style><h2 class=\"stk-block-heading__text\">4. Dans quels cas cette conversion est-elle vraiment utile ?<\/h2><div class=\"stk-block-heading__bottom-line\"><\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-icon-list stk-block-icon-list stk-block stk-d5fd2cb\" data-block-id=\"d5fd2cb\"><style>.stk-d5fd2cb {--stk-icon-list-row-gap:5px !important;--stk-icon-list-marker-color:var(--theme-palette-color-2, #a6003c  ) !important;}.stk-d5fd2cb .stk-block-icon-list-item__content{align-items:baseline !important;}<\/style><svg style=\"display:none\"><defs><g id=\"stk-icon-list__icon-svg-def-d5fd2cb\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 190 190\"><polygon points=\"173.8,28.4 60.4,141.8 15.7,97.2 5.1,107.8 60.4,163 184.4,39 173.8,28.4\"\/><\/svg><\/g><\/defs><\/svg><ul class=\"stk-block-icon-list__ul stk-block-icon-list--column\">\n<li class=\"wp-block-stackable-icon-list-item stk-block-icon-list-item stk-block stk-d3be47d\" data-block-id=\"d3be47d\"><div class=\"stk-block-icon-list-item__content\"><span class=\"stk--svg-wrapper\"><div class=\"stk--inner-svg\"><svg aria-hidden=\"true\" width=\"32\" height=\"32\"><use xlink:href=\"#stk-icon-list__icon-svg-def-d5fd2cb\"><\/use><\/svg><\/div><\/span><span class=\"stk-block-icon-list-item__text\"><strong>Vous souhaitez imprimer une image JPEG\/HEIC de haute qualit\u00e9<\/strong>&nbsp;(paysage, portrait, nature).<\/span><\/div><\/li>\n\n\n\n<li class=\"wp-block-stackable-icon-list-item stk-block-icon-list-item stk-block stk-7e1a2d1\" data-block-id=\"7e1a2d1\"><div class=\"stk-block-icon-list-item__content\"><span class=\"stk--svg-wrapper\"><div class=\"stk--inner-svg\"><svg aria-hidden=\"true\" width=\"32\" height=\"32\"><use xlink:href=\"#stk-icon-list__icon-svg-def-d5fd2cb\"><\/use><\/svg><\/div><\/span><span class=\"stk-block-icon-list-item__text\"><strong>Vous appliquez un traitement artistique pouss\u00e9<\/strong>&nbsp;avec des masques, des courbes, ou des effets.<\/span><\/div><\/li>\n\n\n\n<li class=\"wp-block-stackable-icon-list-item stk-block-icon-list-item stk-block stk-eedc5e7\" data-block-id=\"eedc5e7\"><div class=\"stk-block-icon-list-item__content\"><span class=\"stk--svg-wrapper\"><div class=\"stk--inner-svg\"><svg aria-hidden=\"true\" width=\"32\" height=\"32\"><use xlink:href=\"#stk-icon-list__icon-svg-def-d5fd2cb\"><\/use><\/svg><\/div><\/span><span class=\"stk-block-icon-list-item__text\"><strong>Vous retouchez des photos de smartphone<\/strong>&nbsp;que vous souhaitez publier ou exposer.<\/span><\/div><\/li>\n\n\n\n<li class=\"wp-block-stackable-icon-list-item stk-block-icon-list-item stk-block stk-d3c3ade\" data-block-id=\"d3c3ade\"><div class=\"stk-block-icon-list-item__content\"><span class=\"stk--svg-wrapper\"><div class=\"stk--inner-svg\"><svg aria-hidden=\"true\" width=\"32\" height=\"32\"><use xlink:href=\"#stk-icon-list__icon-svg-def-d5fd2cb\"><\/use><\/svg><\/div><\/span><span class=\"stk-block-icon-list-item__text\"><strong>Vous reprenez d\u2019anciens fichiers JPEG<\/strong>&nbsp;que vous voulez moderniser avec votre regard actuel.<\/span><\/div><\/li>\n<\/ul><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-12e38ea\" id=\"5-comment-convertir-en-tiff-16-bits-simplement\" data-block-id=\"12e38ea\"><style>.stk-12e38ea .stk-block-heading__bottom-line{background-color:var(--theme-palette-color-2, #a6003c  ) !important;}<\/style><h2 class=\"stk-block-heading__text\">5. Comment convertir en TIFF 16 bits simplement ?<\/h2><div class=\"stk-block-heading__bottom-line\"><\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-icon-list stk-block-icon-list stk-block stk-d93c2d6\" data-block-id=\"d93c2d6\"><style>.stk-d93c2d6 {--stk-icon-list-row-gap:5px !important;--stk-icon-list-marker-color:var(--theme-palette-color-2, #a6003c  ) !important;}.stk-d93c2d6 .stk-block-icon-list-item__content{align-items:baseline !important;}<\/style><svg style=\"display:none\"><defs><g id=\"stk-icon-list__icon-svg-def-d93c2d6\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 190 190\"><polygon points=\"173.8,28.4 60.4,141.8 15.7,97.2 5.1,107.8 60.4,163 184.4,39 173.8,28.4\"\/><\/svg><\/g><\/defs><\/svg><ul class=\"stk-block-icon-list__ul stk-block-icon-list--column\">\n<li class=\"wp-block-stackable-icon-list-item stk-block-icon-list-item stk-block stk-f51e47e\" data-block-id=\"f51e47e\"><div class=\"stk-block-icon-list-item__content\"><span class=\"stk--svg-wrapper\"><div class=\"stk--inner-svg\"><svg aria-hidden=\"true\" width=\"32\" height=\"32\"><use xlink:href=\"#stk-icon-list__icon-svg-def-d93c2d6\"><\/use><\/svg><\/div><\/span><span class=\"stk-block-icon-list-item__text\"><strong>Dans Lightroom Classic<\/strong>&nbsp;: clic droit &gt; Modifier dans Photoshop &gt; choisissez TIFF 16 bits comme format d\u2019\u00e9dition.<\/span><\/div><\/li>\n\n\n\n<li class=\"wp-block-stackable-icon-list-item stk-block-icon-list-item stk-block stk-9d3dc8d\" data-block-id=\"9d3dc8d\"><div class=\"stk-block-icon-list-item__content\"><span class=\"stk--svg-wrapper\"><div class=\"stk--inner-svg\"><svg aria-hidden=\"true\" width=\"32\" height=\"32\"><use xlink:href=\"#stk-icon-list__icon-svg-def-d93c2d6\"><\/use><\/svg><\/div><\/span><span class=\"stk-block-icon-list-item__text\"><strong>Dans Capture One<\/strong>&nbsp;: Exporter &gt; TIFF &gt; 16 bits &gt; Adobe RGB ou ProPhoto.<\/span><\/div><\/li>\n\n\n\n<li class=\"wp-block-stackable-icon-list-item stk-block-icon-list-item stk-block stk-19329d8\" data-block-id=\"19329d8\"><div class=\"stk-block-icon-list-item__content\"><span class=\"stk--svg-wrapper\"><div class=\"stk--inner-svg\"><svg aria-hidden=\"true\" width=\"32\" height=\"32\"><use xlink:href=\"#stk-icon-list__icon-svg-def-d93c2d6\"><\/use><\/svg><\/div><\/span><span class=\"stk-block-icon-list-item__text\"><strong>Dans DxO PhotoLab<\/strong>&nbsp;: Export vers disque &gt; TIFF 16 bits.<\/span><\/div><\/li>\n\n\n\n<li class=\"wp-block-stackable-icon-list-item stk-block-icon-list-item stk-block stk-7e4cb70\" data-block-id=\"7e4cb70\"><div class=\"stk-block-icon-list-item__content\"><span class=\"stk--svg-wrapper\"><div class=\"stk--inner-svg\"><svg aria-hidden=\"true\" width=\"32\" height=\"32\"><use xlink:href=\"#stk-icon-list__icon-svg-def-d93c2d6\"><\/use><\/svg><\/div><\/span><span class=\"stk-block-icon-list-item__text\"><strong>Dans Photoshop directement<\/strong>&nbsp;: ouvrez le JPEG &gt; Image &gt; Mode &gt; 16 bits\/canal &gt; Enregistrer sous&#8230; TIFF.<\/span><\/div><\/li>\n<\/ul><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-17b07e0\" data-block-id=\"17b07e0\"><style>.stk-17b07e0 {margin-bottom:50px !important;}<\/style><p class=\"stk-block-text__text\">&#x26a0;&#xfe0f;  Petite pr\u00e9cision : passez l\u2019image en 16 bits&nbsp;<strong>avant<\/strong>&nbsp;<strong>de commencer vos ajustements, sinon les d\u00e9g\u00e2ts seront d\u00e9j\u00e0 faits.<\/strong><\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-5e66553\" id=\"6-conclusion-un-petit-geste-un-gain-de-qualite\" data-block-id=\"5e66553\"><style>.stk-5e66553 .stk-block-heading__bottom-line{background-color:var(--theme-palette-color-2, #a6003c  ) !important;}<\/style><h2 class=\"stk-block-heading__text\">6. Conclusion : un petit geste, un gain de qualit\u00e9<\/h2><div class=\"stk-block-heading__bottom-line\"><\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\" data-block-type=\"core\">M\u00eame si l\u2019on ne r\u00e9cup\u00e8re pas les donn\u00e9es perdues d\u2019un JPEG ou d\u2019un HEIC, convertir en TIFF 16 bits avant toute retouche permet de pr\u00e9server&nbsp;<strong>la finesse des transitions, d&#8217;am\u00e9liorer la pr\u00e9cision des outils<\/strong>, et ainsi d&#8217;optimiser la qualit\u00e9 finale de l\u2019image. La casse sera limit\u00e9e &#x1f605; !<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" data-block-type=\"core\">C\u2019est une astuce simple mais pr\u00e9cieuse, surtout quand on cherche \u00e0 obtenir des images&nbsp;<strong>de la meilleure qualit\u00e9 possible<\/strong>, y compris \u00e0 partir de sources non-RAW. En photographie de nature et de voyage, o\u00f9 chaque d\u00e9tail compte, cette \u00e9tape peut vraiment aider faire la diff\u00e9rence.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" data-block-type=\"core\">J&#8217;esp\u00e8re que ce petit article aura pu vous aider dans la jungle des formats de fichiers, et de les appr\u00e9hender un peu mieux.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" data-block-type=\"core\">Si vous souhaitez lire <a href=\"https:\/\/www.dragonstreetphotography.eu\/fr\/post-production\/\" data-type=\"link\" data-id=\"https:\/\/www.dragonstreetphotography.eu\/fr\/post-production\/\">plus d&#8217;article sur la post-production, je vous invite \u00e0 parcourir la cat\u00e9gorie en question.<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\" data-block-type=\"core\">Merci de votre visite et \u00e0 tr\u00e8s bient\u00f4t &#x1f4f8;, <\/p>\n\n\n\n<p class=\"wp-block-paragraph\" data-block-type=\"core\">Photographiquement votre <\/p>\n\n\n\n<p class=\"wp-block-paragraph\" data-block-type=\"core\">David <\/p>\n\n\n\n<p class=\"wp-block-paragraph\" data-block-type=\"core\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>M\u00eame si vous travaillez principalement en RAW, vous avez sans doute dans votre catalogue des images en JPEG ou en HEIC (notamment issues de votre smartphone ou d\u2019un appareil photo l\u00e9ger). La question peut alors se poser : est-il vraiment utile de convertir un fichier jpeg 8 bits en TIFF 16 bits avant de les [&hellip;]<\/p>\n","protected":false},"author":5864,"featured_media":259845,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1366,1364,1370],"tags":[133,1362],"class_list":["post-259619","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-developpement","category-post-production","category-retouche-photo","tag-debutant-en-photo","tag-amateur-eclaire-en-photo"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/www.dragonstreetphotography.eu\/fr\/wp-json\/wp\/v2\/posts\/259619","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.dragonstreetphotography.eu\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dragonstreetphotography.eu\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dragonstreetphotography.eu\/fr\/wp-json\/wp\/v2\/users\/5864"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dragonstreetphotography.eu\/fr\/wp-json\/wp\/v2\/comments?post=259619"}],"version-history":[{"count":0,"href":"https:\/\/www.dragonstreetphotography.eu\/fr\/wp-json\/wp\/v2\/posts\/259619\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dragonstreetphotography.eu\/fr\/wp-json\/wp\/v2\/media\/259845"}],"wp:attachment":[{"href":"https:\/\/www.dragonstreetphotography.eu\/fr\/wp-json\/wp\/v2\/media?parent=259619"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dragonstreetphotography.eu\/fr\/wp-json\/wp\/v2\/categories?post=259619"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dragonstreetphotography.eu\/fr\/wp-json\/wp\/v2\/tags?post=259619"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}