{"id":350,"date":"2020-06-16T12:24:58","date_gmt":"2020-06-16T12:24:58","guid":{"rendered":"https:\/\/chriswright.photography\/?p=350"},"modified":"2025-06-07T22:09:03","modified_gmt":"2025-06-07T21:09:03","slug":"infrared-photography-processing","status":"publish","type":"post","link":"https:\/\/chriswright.photography\/fr\/infrared-photography-processing\/","title":{"rendered":"Traitement de la photographie infrarouge"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Le traitement de la photographie infrarouge peut \u00eatre d\u00e9compos\u00e9 en trois techniques. \u00c9change de canaux, fausse couleur et monochrome. J&#039;utilise <a href=\"https:\/\/www.adobe.com\/uk\/products\/photoshop-lightroom.html\" target=\"_blank\" rel=\"noopener noreferrer\">Adobe Lightroom<\/a> et Photoshop en combinaison. Avant de nous plonger dans ce sujet, je vais vous recommander de visiter le post pr\u00e9c\u00e9dent avec des instructions sur la fa\u00e7on de cr\u00e9er un <a href=\"https:\/\/chriswright.photography\/fr\/blog\/infrared-landscape-photography\/\">profil de couleur personnalis\u00e9<\/a>&nbsp;pour Lightroom, vous devrez supprimer la dominante rouge sur les photos. Notez que Capture One n&#039;a pas besoin d&#039;un profil de couleur personnalis\u00e9.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Changement de cha\u00eene<\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignleft\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/chriswright.photography\/wp-content\/uploads\/2020\/06\/Porthill-Bridge-IFR-Custom-Profile-300x200.jpg\" alt=\"Infrared Photography Processing\" class=\"wp-image-343\" srcset=\"https:\/\/chriswright.photography\/wp-content\/uploads\/2020\/06\/Porthill-Bridge-IFR-Custom-Profile-300x200.jpg 300w, https:\/\/chriswright.photography\/wp-content\/uploads\/2020\/06\/Porthill-Bridge-IFR-Custom-Profile-1024x683.jpg 1024w, https:\/\/chriswright.photography\/wp-content\/uploads\/2020\/06\/Porthill-Bridge-IFR-Custom-Profile-768x512.jpg 768w, https:\/\/chriswright.photography\/wp-content\/uploads\/2020\/06\/Porthill-Bridge-IFR-Custom-Profile.jpg 1080w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">Une fois le profil de couleur du client appliqu\u00e9, votre image ressemblera \u00e0 un ancien n\u00e9gatif s\u00e9pia. La technique connue sous le nom de \u00ab permutation de canaux \u00bb inverse les valeurs du bleu et du rouge dans le m\u00e9langeur de canaux de Photoshop.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tout d&#039;abord, dans Lightroom, d\u00e9placez le curseur des blancs jusqu&#039;\u00e0 la surexposition, puis ramenez-le l\u00e9g\u00e8rement. Faites de m\u00eame avec les noirs. Vos noirs doivent \u00eatre noirs et vos blancs blancs. Ensuite, saturez l\u00e9g\u00e8rement les oranges (c&#039;est tr\u00e8s subjectif) et choisissez \u00ab\u00a0<strong>Modifier dans Photoshop<\/strong>\u201c&quot;.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dans Photoshop, dupliquez le calque et, en le mettant en surbrillance, acc\u00e9dez au m\u00e9langeur de canaux (Image -&gt; R\u00e9glages). Pour le canal de sortie \u00ab\u00a0Rouge\u00a0\u00bb, d\u00e9finissez les valeurs sur Rouge 0 et Bleu +100. Passez ensuite au canal de sortie Bleu et d\u00e9finissez Bleu 0 et Rouge +100. Cela rendra votre ciel beaucoup plus bleu et votre feuillage l\u00e9g\u00e8rement orang\u00e9.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vous pouvez enregistrer l&#039;image, revenir dans Lightroom et travailler sur le TIF g\u00e9n\u00e9r\u00e9. J&#039;appliquerais un peu de clart\u00e9, un peu de vivacit\u00e9 et peut-\u00eatre modifier la saturation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Une autre fa\u00e7on, et je pense la plus efficace, d&#039;obtenir l&#039;effet de permutation des canaux est la suivante\u00a0: au lieu d&#039;utiliser le m\u00e9langeur de canaux, utilisez le curseur \u00ab\u00a0Niveaux\u00a0\u00bb et d\u00e9placez les tons fonc\u00e9s vers le centre. Descendez les blancs compl\u00e8tement \u00e0 gauche, puis d\u00e9placez les tons fonc\u00e9s du centre vers la droite. Votre image ressemblera \u00e0 un n\u00e9gatif. Choisissez \u00ab\u00a0Teinte\u00a0\u00bb comme mode de fusion. Cette technique donne une teinte de bleu l\u00e9g\u00e8rement plus naturelle dans le ciel que la simple permutation des canaux.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Votre image devrait ressembler \u00e0 ceci.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"169\" src=\"https:\/\/chriswright.photography\/wp-content\/uploads\/2020\/06\/Porthill-Bridge-IFR-Channel-Swap-300x169.jpg\" alt=\"Infrared Photograph Channel Swap\" class=\"wp-image-344\" srcset=\"https:\/\/chriswright.photography\/wp-content\/uploads\/2020\/06\/Porthill-Bridge-IFR-Channel-Swap-300x169.jpg 300w, https:\/\/chriswright.photography\/wp-content\/uploads\/2020\/06\/Porthill-Bridge-IFR-Channel-Swap-1024x576.jpg 1024w, https:\/\/chriswright.photography\/wp-content\/uploads\/2020\/06\/Porthill-Bridge-IFR-Channel-Swap-768x432.jpg 768w, https:\/\/chriswright.photography\/wp-content\/uploads\/2020\/06\/Porthill-Bridge-IFR-Channel-Swap.jpg 1080w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Fausse couleur<\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignleft\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"151\" src=\"https:\/\/chriswright.photography\/wp-content\/uploads\/2020\/06\/Bandstand-Shrewsbury-IR-300x151.jpg\" alt=\"Infrared Photography Processing\" class=\"wp-image-351\" srcset=\"https:\/\/chriswright.photography\/wp-content\/uploads\/2020\/06\/Bandstand-Shrewsbury-IR-300x151.jpg 300w, https:\/\/chriswright.photography\/wp-content\/uploads\/2020\/06\/Bandstand-Shrewsbury-IR-1024x516.jpg 1024w, https:\/\/chriswright.photography\/wp-content\/uploads\/2020\/06\/Bandstand-Shrewsbury-IR-768x387.jpg 768w, https:\/\/chriswright.photography\/wp-content\/uploads\/2020\/06\/Bandstand-Shrewsbury-IR-1536x774.jpg 1536w, https:\/\/chriswright.photography\/wp-content\/uploads\/2020\/06\/Bandstand-Shrewsbury-IR-1080x544.jpg 1080w, https:\/\/chriswright.photography\/wp-content\/uploads\/2020\/06\/Bandstand-Shrewsbury-IR-1280x645.jpg 1280w, https:\/\/chriswright.photography\/wp-content\/uploads\/2020\/06\/Bandstand-Shrewsbury-IR-980x494.jpg 980w, https:\/\/chriswright.photography\/wp-content\/uploads\/2020\/06\/Bandstand-Shrewsbury-IR-480x242.jpg 480w, https:\/\/chriswright.photography\/wp-content\/uploads\/2020\/06\/Bandstand-Shrewsbury-IR.jpg 1920w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">Avec cette technique, vous pouvez vous \u00e9loigner de l\u2019axe Bleu\/Orange et adopter des couleurs plus vives.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Voil\u00e0 comment \u00e7a se passe.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pr\u00e9parez votre image de la m\u00eame mani\u00e8re que pr\u00e9c\u00e9demment dans Lightroom. Poussez les blancs et les noirs pour obtenir une bonne plage dynamique. Jouez avec la balance des blancs pour obtenir une bonne s\u00e9paration entre le ciel et le feuillage. Faites-le en cliquant sur le compte-gouttes dans l&#039;\u00e9cran Balance des blancs et en s\u00e9lectionnant diff\u00e9rentes zones de l&#039;image pour voir ce qui fonctionne. Les nuages par exemple. Lorsque vous avez une bonne s\u00e9paration, forcez la plupart des couleurs dans le feuillage, augmentez la clart\u00e9 et l&#039;\u00e9clat et poussez la saturation jusqu&#039;\u00e0 ce que cela paraisse trop. Laissez-le l\u00e0, croyez-moi, \u00e0 ce stade, plus c&#039;est criard, mieux c&#039;est.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ensuite, cliquez sur \u00ab\u00a0Modifier dans Photoshop\u00a0\u00bb. Allez dans l&#039;outil Teinte\/Saturation et laissez-le sur Master, jouez avec le curseur Teinte. Vous trouverez une vaste gamme de combinaisons de couleurs, jouez, choisissez ce qui vous convient.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"169\" src=\"https:\/\/chriswright.photography\/wp-content\/uploads\/2020\/06\/Frankwell-Roundabout-Channel-Swap-300x169.jpg\" alt=\"\" class=\"wp-image-355\" srcset=\"https:\/\/chriswright.photography\/wp-content\/uploads\/2020\/06\/Frankwell-Roundabout-Channel-Swap-300x169.jpg 300w, https:\/\/chriswright.photography\/wp-content\/uploads\/2020\/06\/Frankwell-Roundabout-Channel-Swap-1024x576.jpg 1024w, https:\/\/chriswright.photography\/wp-content\/uploads\/2020\/06\/Frankwell-Roundabout-Channel-Swap-768x432.jpg 768w, https:\/\/chriswright.photography\/wp-content\/uploads\/2020\/06\/Frankwell-Roundabout-Channel-Swap.jpg 1080w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Noir et blanc<\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignleft\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"169\" src=\"https:\/\/chriswright.photography\/wp-content\/uploads\/2020\/06\/Welsh-Bridge-300x169.jpg\" alt=\"Welsh Bridge Infrared\" class=\"wp-image-358\" srcset=\"https:\/\/chriswright.photography\/wp-content\/uploads\/2020\/06\/Welsh-Bridge-300x169.jpg 300w, https:\/\/chriswright.photography\/wp-content\/uploads\/2020\/06\/Welsh-Bridge-1024x576.jpg 1024w, https:\/\/chriswright.photography\/wp-content\/uploads\/2020\/06\/Welsh-Bridge-768x432.jpg 768w, https:\/\/chriswright.photography\/wp-content\/uploads\/2020\/06\/Welsh-Bridge.jpg 1080w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">J&#039;ai choisi d&#039;installer un filtre de 720 nm sur mon appareil photo. L&#039;infrarouge occupe un spectre compris entre 700 nm et 1 millim\u00e8tre. Ainsi, un filtre de 720 nm laissera passer un peu de couleur, tandis que ceux de 590 nm et 665 nm en laisseront un peu plus. C&#039;est cette lumi\u00e8re suppl\u00e9mentaire avec laquelle nous avons jou\u00e9 dans les sections pr\u00e9c\u00e9dentes.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le filtre 720 nm est id\u00e9al pour le noir et blanc, les r\u00e8gles de traitement sont plus ou moins les m\u00eames qu&#039;avant. R\u00e9glez la balance des blancs. Votre profil personnalis\u00e9 install\u00e9 vous donne un bon point de d\u00e9part, \u00e9troitement align\u00e9 sur le profil personnalis\u00e9 de votre appareil photo. Poussez les noirs et les blancs \u00e0 leurs points forts (juste avant qu&#039;ils n&#039;atteignent leur maximum). Jouez avec l&#039;image afin d&#039;obtenir une bonne s\u00e9paration entre l&#039;aspect de l&#039;image que vous souhaitez que les gens regardent et le ciel, puis convertissez-la en noir et blanc.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La conversion noir et blanc peut \u00eatre effectu\u00e9e dans Lightroom en appliquant un profil noir et blanc, ou dans Photoshop, ou comme je pr\u00e9f\u00e8re le faire, en utilisant un programme tel que Silver Efex Pro pour me donner une gamme d&#039;options dans le spectre noir et blanc.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les conversions monochromes sont superbes, car il faut un deuxi\u00e8me regard avant que le spectateur se rende compte que le feuillage est de la \u00ab mauvaise \u00bb teinte !<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Voici les techniques cl\u00e9s du traitement de la photographie infrarouge, que vous pouvez m\u00e9langer et assortir \u00e0 votre guise. Par exemple, dans la photographie en couleur de flamants roses de la carri\u00e8re de Shrewsbury, le kiosque \u00e0 musique est soumis au moule du flamant. Je pourrais cr\u00e9er un masque pour le kiosque \u00e0 musique et appliquer une couche monochrome pour que le moule soit supprim\u00e9. Ce sont les d\u00e9tails qui font de la photographie infrarouge un passe-temps si gratifiant.<\/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, 2rem);max-width:var( --global-content-width, 1290px );padding-left:var(--global-content-edge-padding);padding-right:var(--global-content-edge-padding);padding-top:35px;padding-bottom:25px;grid-template-columns:repeat(2, minmax(0, 1fr));}.kb-row-layout-id3919_a50959-24 > .kt-row-layout-overlay{opacity:0.30;background-color:var(--global-palette7, #EDF2F7);}@media all and (max-width: 1024px){.kb-row-layout-id3919_a50959-24 > .kt-row-column-wrap{grid-template-columns:repeat(2, minmax(0, 1fr));}}@media all and (max-width: 767px){.kb-row-layout-id3919_a50959-24 > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}<\/style><div class=\"kb-row-layout-wrap kb-row-layout-id3919_a50959-24 alignnone kt-row-has-bg wp-block-kadence-rowlayout\"><div class=\"kt-row-layout-overlay kt-row-overlay-normal\"><\/div><div class=\"kt-row-column-wrap kt-has-2-columns kt-row-layout-equal kt-tab-layout-inherit kt-mobile-layout-row kt-row-valign-top kb-theme-content-width\">\n<style>.kadence-column3919_a5712f-f2 > .kt-inside-inner-col,.kadence-column3919_a5712f-f2 > .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_a5712f-f2 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column3919_a5712f-f2 > .kt-inside-inner-col{flex-direction:column;}.kadence-column3919_a5712f-f2 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column3919_a5712f-f2 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column3919_a5712f-f2{position:relative;}@media all and (max-width: 1024px){.kadence-column3919_a5712f-f2 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column3919_a5712f-f2 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column3919_a5712f-f2 inner-column-1\"><div class=\"kt-inside-inner-col\"><style>.kb-form input.kadence-blocks-field.verify{opacity:0.0;position:absolute;top:0.0;left:0.0;width:0.0;height:0.0;z-index:-1;}<\/style>\n<div class=\"wp-block-kadence-form kadence-form-3919_3a1ba7-97 kb-form-wrap\"><form class=\"kb-form\" action=\"\" method=\"post\" data-trp-original-action=\"\"><div class=\"kadence-blocks-form-field kb-field-desk-width-100 kb-input-size-standard\"><label for=\"kb_field_3919_3a1ba7-97_0\">Nom<\/label><input name=\"kb_field_0\" id=\"kb_field_3919_3a1ba7-97_0\" data-label=\"Name\" type=\"text\" placeholder=\"\" value=\"\" data-type=\"text\" class=\"kb-field kb-text-style-field kb-text-field kb-field-0\"\/><\/div><div class=\"kadence-blocks-form-field kb-form-field-1 kb-field-desk-width-100 kb-input-size-standard\"><label for=\"kb_field_3919_3a1ba7-97_1\">Courriel<span class=\"required\">*<\/span><\/label><input name=\"kb_field_1\" id=\"kb_field_3919_3a1ba7-97_1\" data-label=\"Email\" type=\"email\" placeholder=\"\" value=\"\" data-type=\"email\" class=\"kb-field kb-text-style-field kb-email-field kb-field-1\" data-required=\"yes\"\/><\/div><input type=\"hidden\" name=\"_kb_form_id\" value=\"3919_3a1ba7-97\"\/><input type=\"hidden\" name=\"_kb_form_post_id\" value=\"3919\"\/><input type=\"hidden\" name=\"action\" value=\"kb_process_ajax_submit\"\/><div class=\"kadence-blocks-form-field google-recaptcha-checkout-wrap\"><p id=\"kb-container-g-recaptcha\" class=\"google-recaptcha-container\"><span id=\"kb_recaptcha_3919_3a1ba7-97\" class=\"kadence-blocks-g-recaptcha-v2 g-recaptcha kb_recaptcha_3919_3a1ba7-97\" style=\"display:inline-block\"><\/span><\/p><\/div><label class=\"kadence-verify-label\">Courriel<input class=\"kadence-blocks-field verify\" type=\"text\" name=\"_kb_verify_email\" autocomplete=\"new-password\" aria-hidden=\"true\" placeholder=\"Courriel\" tabindex=\"-1\" data-1p-ignore=\"true\" data-lpignore=\"true\" \/><\/label><div class=\"kadence-blocks-form-field 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>Le traitement de la photographie infrarouge peut \u00eatre d\u00e9compos\u00e9 en trois techniques. \u00c9change de canaux, fausse couleur et monochrome. J&#039;utilise Adobe Lightroom et Photoshop en combinaison. Avant de nous plonger dans ce sujet, je vous recommande de consulter le post pr\u00e9c\u00e9dent avec des instructions sur la fa\u00e7on de cr\u00e9er un profil de couleur personnalis\u00e9 pour Lightroom dont vous aurez besoin pour vous d\u00e9barrasser\u2026<\/p>\n<div class=\"excerpt_sharing_after_output\">\n<div class=\"kt_simple_share_container kt-social-align-center kt-socialstyle-style_03 kt-social-size-normal kt-social-bg-transparent\"><a class=\"kt_facebook_share\" data-placement=\"bottom\" data-placement-mobile=\"bottom\" aria-label=\" Facebook\" data-tooltip=\" Facebook\" href=\"https:\/\/www.facebook.com\/sharer.php?u=https:\/\/chriswright.photography\/fr\/infrared-photography-processing\/\" target=\"_blank\"><span class=\"kt-social-svg-icon\"><svg viewbox=\"0 0 264 512\"  fill=\"currentColor\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"  aria-hidden=\"true\"><path d=\"M76.7 512V283H0v-91h76.7v-71.7C76.7 42.4 124.3 0 193.8 0c33.3 0 61.9 2.5 70.2 3.6V85h-48.2c-37.8 0-45.1 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