{"id":10378,"date":"2025-12-23T18:24:01","date_gmt":"2025-12-23T17:24:01","guid":{"rendered":"https:\/\/chriswright.photography\/?p=10378"},"modified":"2025-12-26T15:10:52","modified_gmt":"2025-12-26T14:10:52","slug":"4-common-color-issues","status":"publish","type":"post","link":"https:\/\/chriswright.photography\/fr\/4-common-color-issues\/","title":{"rendered":"4 probl\u00e8mes de couleur courants"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Je pense que nous abordons tous le traitement d&#039;images couleur de la m\u00eame mani\u00e8re\u00a0: en trois phases. D&#039;abord, l&#039;augmentation du contraste\u00a0; ensuite, les ajustements globaux\u00a0; et enfin, une approche plus mesur\u00e9e o\u00f9 l&#039;on utilise les outils \u00e0 notre disposition pour optimiser le rendu de l&#039;image. Je pratique ce domaine depuis de nombreuses ann\u00e9es et je rencontre fr\u00e9quemment quatre probl\u00e8mes de couleur.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"M\u00eame votre salle de montage sabote vos couleurs\u00a0: 3 solutions concr\u00e8tes\" width=\"720\" height=\"405\" src=\"https:\/\/www.youtube.com\/embed\/khO1EhAiijc?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Le premier probl\u00e8me, et le plus courant, concerne la pi\u00e8ce et l&#039;\u00e9clairage dans lesquels vous travaillez. J&#039;ai mis du temps \u00e0 r\u00e9aliser l&#039;ampleur des d\u00e9g\u00e2ts qu&#039;un \u00e9clairage inadapt\u00e9 peut causer. Je pensais que mes comp\u00e9tences en montage s&#039;am\u00e9lioraient jusqu&#039;\u00e0 ce que je me retrouve coinc\u00e9e par le mauvais temps dans un petit cottage du Shropshire, \u00e9clair\u00e9e par plusieurs ampoules diff\u00e9rentes dans une pi\u00e8ce peinte en cr\u00e8me. Je ne m&#039;en suis pas rendu compte imm\u00e9diatement, car je travaille sur un... <a href=\"https:\/\/chriswright.photography\/fr\/best-laptop-for-photographers\/\">MacBook Pro puissant<\/a> Avec un affichage exceptionnel qui, je le supposais, dominait compl\u00e8tement les couleurs de la lumi\u00e8re ambiante. Imaginez donc mon choc lorsque, en consultant mes r\u00e9seaux sociaux \u00e0 la lumi\u00e8re du jour, j&#039;ai d\u00e9couvert une photo aussi orange que Donald Trump et presque aussi choquante\u00a0!<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le probl\u00e8me ici \u00e9tait la lumi\u00e8re ambiante jaune\u00a0: nos yeux s\u2019adaptent tr\u00e8s vite et, apr\u00e8s quelques minutes, nous percevons une lumi\u00e8re jaune \u00e0 -3 (pour ainsi dire). Par cons\u00e9quent, lorsque nous voulons voir plus d\u2019orange ou de jaune dans nos images, nous accentuons cette couleur bien au-del\u00e0 de ce qui est n\u00e9cessaire. Il existe plusieurs solutions pour y rem\u00e9dier\u00a0: utiliser l\u2019outil de balance des blancs pour r\u00e9gler la balance des blancs de la photo, se concentrer sur les zones les plus naturelles et, enfin, retoucher dans l\u2019obscurit\u00e9 ou \u00e0 la lumi\u00e8re du jour tamis\u00e9e \u2013 \u00e9teignez les lumi\u00e8res\u00a0!<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le second probl\u00e8me ne rel\u00e8ve pas vraiment d&#039;un souci de retouche \u00e0 la source. Lorsque nous photographions des couchers de soleil, nous avons l&#039;habitude d&#039;inclure le soleil dans notre cadre \u2013 apr\u00e8s tout, c&#039;est bien pour cela que nous photographions un coucher de soleil. Mais que se passe-t-il lorsque nous d\u00e9pendons de la lumi\u00e8re du soleil couchant\u00a0? Lorsque je suis dans le Shropshire, je me prom\u00e8ne r\u00e9guli\u00e8rement \u00e0 l&#039;heure dor\u00e9e dans le m\u00eame champ. On y trouve une s\u00e9rie de ch\u00eanes centenaires et, chose un peu frustrante, le plus bel arbre \u00e0 la forme parfaite est tr\u00e8s pr\u00e8s de la lisi\u00e8re du champ et du bois qui se trouve derri\u00e8re. Il m&#039;a \u00e9t\u00e9 impossible de d\u00e9tacher suffisamment l&#039;arbre de l&#039;arri\u00e8re-plan pour obtenir une photo correcte.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La derni\u00e8re fois, le soleil, couch\u00e9 \u00e0 l&#039;horizon, balayait le sol d&#039;une douce lumi\u00e8re chaude, \u00e9clairant le ch\u00eane et non les bois en arri\u00e8re-plan. Eur\u00eaka ! Je me suis dit que j&#039;avais moins de dix minutes pour prendre la photo. J&#039;ai finalement opt\u00e9 pour une exposition adapt\u00e9e aux bois plut\u00f4t qu&#039;au ciel, afin de r\u00e9cup\u00e9rer les d\u00e9tails dans les zones sombres. Je faisais confiance \u00e0 l&#039;appareil pour enregistrer des informations sur le ciel qui n&#039;appara\u00eetraient pas sur le fichier JPEG. <\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1920\" height=\"1280\" src=\"https:\/\/chriswright.photography\/wp-content\/uploads\/2025\/12\/Tree-in-sunshine-1237-4-1920x1280.jpg\" alt=\"\" class=\"wp-image-10380\" srcset=\"https:\/\/chriswright.photography\/wp-content\/uploads\/2025\/12\/Tree-in-sunshine-1237-4-1920x1280.jpg 1920w, https:\/\/chriswright.photography\/wp-content\/uploads\/2025\/12\/Tree-in-sunshine-1237-4-300x200.jpg 300w, https:\/\/chriswright.photography\/wp-content\/uploads\/2025\/12\/Tree-in-sunshine-1237-4-768x512.jpg 768w, https:\/\/chriswright.photography\/wp-content\/uploads\/2025\/12\/Tree-in-sunshine-1237-4-1536x1024.jpg 1536w, https:\/\/chriswright.photography\/wp-content\/uploads\/2025\/12\/Tree-in-sunshine-1237-4-18x12.jpg 18w, https:\/\/chriswright.photography\/wp-content\/uploads\/2025\/12\/Tree-in-sunshine-1237-4.jpg 2040w\" sizes=\"auto, (max-width: 1920px) 100vw, 1920px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Pourquoi ne pas avoir utilis\u00e9 le bracketing\u00a0? Eh bien, je ne souhaitais pas forc\u00e9ment un ciel trop bleu\u00a0; une bande de nuages bas aurait mis en valeur la lumi\u00e8re chaude qui frappait l\u2019arbre, mais je ne voulais rien qui d\u00e9tourne l\u2019attention de l\u2019arbre lui-m\u00eame. Au montage, j\u2019ai pu r\u00e9cup\u00e9rer suffisamment de d\u00e9tails pour que le ciel soit d\u2019un bleu tr\u00e8s p\u00e2le et que les couleurs dominantes restent le vert et l\u2019orange. J\u2019ai ainsi obtenu une photo saisissante que je n\u2019avais jamais eu l\u2019occasion de prendre auparavant.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le troisi\u00e8me cas de figure est celui des illuminations de No\u00ebl. On a l&#039;habitude de laisser les lumi\u00e8res s&#039;exprimer pleinement, mais lorsque la lumi\u00e8re est le sujet principal, il faut exposer correctement pour la lumi\u00e8re elle-m\u00eame, qui plonge tout ce qui l&#039;entoure dans l&#039;obscurit\u00e9.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"1920\" src=\"https:\/\/chriswright.photography\/wp-content\/uploads\/2025\/12\/xmas-lights-1252-1280x1920.jpg\" alt=\"\" class=\"wp-image-10381\" srcset=\"https:\/\/chriswright.photography\/wp-content\/uploads\/2025\/12\/xmas-lights-1252-1280x1920.jpg 1280w, https:\/\/chriswright.photography\/wp-content\/uploads\/2025\/12\/xmas-lights-1252-200x300.jpg 200w, https:\/\/chriswright.photography\/wp-content\/uploads\/2025\/12\/xmas-lights-1252-768x1152.jpg 768w, https:\/\/chriswright.photography\/wp-content\/uploads\/2025\/12\/xmas-lights-1252-1024x1536.jpg 1024w, https:\/\/chriswright.photography\/wp-content\/uploads\/2025\/12\/xmas-lights-1252-8x12.jpg 8w, https:\/\/chriswright.photography\/wp-content\/uploads\/2025\/12\/xmas-lights-1252.jpg 1360w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Dans ce cas pr\u00e9cis, j&#039;ai choisi de transgresser certaines r\u00e8gles et de saturer les noirs\u00a0: j&#039;ai utilis\u00e9 un filtre radial pour accentuer la projection des phares au premier plan, ce qui m&#039;a permis de faire ressortir suffisamment de d\u00e9tails pour attirer le regard, et j&#039;ai utilis\u00e9 le contraste global (rare pour moi) pour rehausser le contraste des \u00e9l\u00e9ments color\u00e9s de la photo, comme les lumi\u00e8res et les reflets. Le reste \u00e9tait plong\u00e9 dans une obscurit\u00e9 froide aux reflets bleut\u00e9s. S&#039;il avait plu, la rue aurait \u00e9t\u00e9 bien plus int\u00e9ressante\u2026 mais c&#039;est ainsi.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le dernier exemple est l&#039;\u00e9clairage mixte.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1920\" height=\"1280\" src=\"https:\/\/chriswright.photography\/wp-content\/uploads\/2025\/12\/Shrews-market-1--1920x1280.jpg\" alt=\"\" class=\"wp-image-10382\" srcset=\"https:\/\/chriswright.photography\/wp-content\/uploads\/2025\/12\/Shrews-market-1--1920x1280.jpg 1920w, https:\/\/chriswright.photography\/wp-content\/uploads\/2025\/12\/Shrews-market-1--300x200.jpg 300w, https:\/\/chriswright.photography\/wp-content\/uploads\/2025\/12\/Shrews-market-1--768x512.jpg 768w, https:\/\/chriswright.photography\/wp-content\/uploads\/2025\/12\/Shrews-market-1--1536x1024.jpg 1536w, https:\/\/chriswright.photography\/wp-content\/uploads\/2025\/12\/Shrews-market-1--18x12.jpg 18w, https:\/\/chriswright.photography\/wp-content\/uploads\/2025\/12\/Shrews-market-1-.jpg 2040w\" sizes=\"auto, (max-width: 1920px) 100vw, 1920px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Sur cette image, on distingue quatre sources de lumi\u00e8re diff\u00e9rentes\u00a0: la lumi\u00e8re du jour qui entre par les fen\u00eatres en haut \u00e0 gauche et \u00e0 droite, l\u2019\u00e9clairage LED des ampoules encastr\u00e9es dans le toit et des guirlandes de No\u00ebl, une sorte de faux lampadaire au premier plan et les \u00e9clairages utilis\u00e9s par les commer\u00e7ants pour illuminer leurs \u00e9tals. Il en r\u00e9sulte une teinte brun\u00e2tre disgracieuse qui domine l\u2019image.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Je conseille toujours de commencer par la correction colorim\u00e9trique, et cette photo en est un bon exemple\u00a0: si je commence \u00e0 retoucher \u00e0 partir de cette base, la dominante de couleur s&#039;impr\u00e8gne dans l&#039;image et des \u00e9l\u00e9ments comme le contraste commencent \u00e0 affecter les couleurs, et pas en bien\u00a0! D&#039;habitude, je r\u00e9sous ce probl\u00e8me en ajustant la temp\u00e9rature et la teinte \u00e0 l&#039;\u0153il, mais cela s&#039;est av\u00e9r\u00e9 quasiment impossible ici. On se retrouve vite pris dans un cycle infernal d&#039;ajustements de temp\u00e9rature, de correction de la teinte, de nouveaux ajustements de temp\u00e9rature, de r\u00e9\u00e9quilibrage, etc. J&#039;ai essay\u00e9 l&#039;outil pipette, en utilisant les rayures blanches des auvents en toile, et le r\u00e9sultat \u00e9tait plut\u00f4t bon, mais j&#039;ai une autre astuce pour ce niveau de difficult\u00e9\u00a0: Photoshop.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Si vous cr\u00e9ez un calque de courbes dans Photoshop, vous pouvez utiliser le bouton automatique pour que le logiciel \u00e9quilibre les couleurs. En g\u00e9n\u00e9ral, il le fait assez bien, mais si ce n&#039;est pas le cas, vous pouvez essayer d&#039;appuyer simultan\u00e9ment sur la touche Option et le bouton automatique\u00a0; une fen\u00eatre appara\u00eetra alors, dans laquelle vous pourrez choisir \u201c\u00a0Am\u00e9liorer le contraste par canal\u00a0\u201d et \u201c\u00a0Aligner les tons moyens neutres\u00a0\u201d. C&#039;est la m\u00e9thode la plus efficace que j&#039;aie jamais utilis\u00e9e pour \u00e9liminer les dominantes de couleur, et je ne comprends pas pourquoi elle est si bien cach\u00e9e\u00a0!<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1920\" height=\"1280\" src=\"https:\/\/chriswright.photography\/wp-content\/uploads\/2025\/12\/Shrews-market-1-2-1920x1280.jpg\" alt=\"\" class=\"wp-image-10383\" srcset=\"https:\/\/chriswright.photography\/wp-content\/uploads\/2025\/12\/Shrews-market-1-2-1920x1280.jpg 1920w, https:\/\/chriswright.photography\/wp-content\/uploads\/2025\/12\/Shrews-market-1-2-300x200.jpg 300w, https:\/\/chriswright.photography\/wp-content\/uploads\/2025\/12\/Shrews-market-1-2-768x512.jpg 768w, https:\/\/chriswright.photography\/wp-content\/uploads\/2025\/12\/Shrews-market-1-2-1536x1024.jpg 1536w, https:\/\/chriswright.photography\/wp-content\/uploads\/2025\/12\/Shrews-market-1-2-18x12.jpg 18w, https:\/\/chriswright.photography\/wp-content\/uploads\/2025\/12\/Shrews-market-1-2.jpg 2040w\" sizes=\"auto, (max-width: 1920px) 100vw, 1920px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Cela me donne une bien meilleure position de d\u00e9part que celle que j&#039;aurais pu atteindre par mes propres moyens.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Voici les probl\u00e8mes de couleur les plus courants que je rencontre. De mani\u00e8re g\u00e9n\u00e9rale, j&#039;applique quelques mesures pour att\u00e9nuer les probl\u00e8mes qui en d\u00e9coulent.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Montage en lumi\u00e8re naturelle douce<\/li>\n\n\n\n<li>Lors du r\u00e9glage de la balance des blancs, concentrez-vous sur les \u00e9l\u00e9ments les plus r\u00e9alistes de l&#039;image.<\/li>\n\n\n\n<li>Revenez sur cette image, reposez mes yeux.<\/li>\n\n\n\n<li>Corriger la couleur avant de proc\u00e9der \u00e0 l&#039;\u00e9talonnage.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">J&#039;esp\u00e8re que cela vous a \u00e9t\u00e9 utile, joyeux No\u00ebl et bonne ann\u00e9e !<\/p>\n\n\n<style>.kb-row-layout-id3919_a50959-24 > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id3919_a50959-24 > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id3919_a50959-24 > .kt-row-column-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:var(--global-kb-gap-md, 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kb-submit-field kb-field-desk-width-100\"><button class=\"kb-forms-submit button kb-button-size-standard kb-button-width-auto\">Soumettre<\/button><\/div><input type=\"hidden\" name=\"trp-form-language\" value=\"fr\"\/><\/form><\/div>\n<noscript><div class=\"kadence-blocks-form-message kadence-blocks-form-warning\">Veuillez activer JavaScript dans votre navigateur pour envoyer le formulaire.<\/div><style>.kadence-form-3919_3a1ba7-97 .kadence-blocks-form-field.kb-submit-field { display: none; }<\/style><\/noscript><\/div><\/div>\n\n\n<style>.kadence-column3919_1d5d28-64 > .kt-inside-inner-col,.kadence-column3919_1d5d28-64 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column3919_1d5d28-64 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column3919_1d5d28-64 > .kt-inside-inner-col{flex-direction:column;}.kadence-column3919_1d5d28-64 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column3919_1d5d28-64 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column3919_1d5d28-64{position:relative;}@media all and (max-width: 1024px){.kadence-column3919_1d5d28-64 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column3919_1d5d28-64 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column3919_1d5d28-64 inner-column-2\"><div class=\"kt-inside-inner-col\">\n<h2 class=\"wp-block-heading\" id=\"subscribe\">S'abonner...<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Je vous tiendrai au courant avec des mises \u00e0 jour mensuelles r\u00e9guli\u00e8res sur les ateliers, les cours, les guides et les revues.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Inscrivez-vous ici et obtenez des tarifs sp\u00e9ciaux sur tous les cours et promenades photo en 2026<\/p>\n<\/div><\/div>\n\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Je pense que nous abordons tous le traitement d&#039;images couleur de la m\u00eame mani\u00e8re\u00a0: en trois phases. D&#039;abord, l&#039;augmentation du contraste, ensuite les ajustements globaux, et enfin une approche plus mesur\u00e9e o\u00f9 l&#039;on utilise les outils \u00e0 notre disposition de la mani\u00e8re la plus adapt\u00e9e \u00e0 l&#039;image. 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