Traitement négatif argentique couleur

[jpg54]

Bizarre, je l'ai récupéré sans problème. Je viens de regarder, tu as dû cliquer sur IMG_2992.jpg.xmp alors qu'il faut cliquer sur IMG_2992.jpg en faisant afficher tous les fichiers.
Pour voir les .xmp dans tes traitements, tu dois aller vérifier dans les "préférences" sur l'onglet "fonctionnement" que l'option "écrire un fichier xmp redondant pour chaque image" est bien cochée.
Je te mets le fichier .xmp du traitement d'Aurélien :

Code :

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     darktable:blendop_params="gz12eJxjYGBgkGAAgRNODESDBnsIHll8ANNSGQM="/>
    <rdf:li
     darktable:operation="flip"
     darktable:enabled="1"
     darktable:modversion="2"
     darktable:params="06000000"
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     darktable:blendop_params="gz12eJxjYGBgkGAAgRNODESDBnsIHll8ANNSGQM="/>
    <rdf:li
     darktable:operation="clipping"
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     darktable:params="30adc7be000000000000000094126a3fb1f4793f0000000000000000cdcc4c3ecdcc4c3ecdcc4c3fcdcc4c3ecdcc4c3fcdcc4c3fcdcc4c3ecdcc4c3f000000000000000000000000010000000000000000000000"
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     darktable:operation="clipping"
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     darktable:operation="exposure"
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     darktable:modversion="5"
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     darktable:multi_name=""
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     darktable:blendop_version="7"
     darktable:blendop_params="gz12eJxjYGBgkGAAgRNODESDBnsIHll8ANNSGQM="/>
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     darktable:operation="exposure"
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     darktable:blendop_params="gz12eJxjYGBgkGAAgRNODESDBnsIHll8ANNSGQM="/>
    <rdf:li
     darktable:operation="temperature"
     darktable:enabled="1"
     darktable:modversion="3"
     darktable:params="14dc923f0000803f7c2a0f40cc29513e"
     darktable:multi_name=""
     darktable:multi_priority="0"
     darktable:blendop_version="7"
     darktable:blendop_params="gz12eJxjYGBgkGAAgRNODESDBnsIHll8ANNSGQM="/>
    <rdf:li
     darktable:operation="exposure"
     darktable:enabled="1"
     darktable:modversion="5"
     darktable:params="00000000bd9f1a3e7f6afc3f00004842000080c0"
     darktable:multi_name=""
     darktable:multi_priority="0"
     darktable:blendop_version="7"
     darktable:blendop_params="gz12eJxjYGBgkGAAgRNODESDBnsIHll8ANNSGQM="/>
    <rdf:li
     darktable:operation="shadhi"
     darktable:enabled="1"
     darktable:modversion="5"
     darktable:params="00000000000048430000000000000000000048c2000000000000484200004842000000007f000000bd37863501000000"
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     darktable:blendop_params="gz12eJxjYGBgEGAAgRNODESDBnsIHll8AMoSGPs="/>
    <rdf:li
     darktable:operation="basecurve"
     darktable:enabled="1"
     darktable:modversion="5"
     darktable:params="gz14eJxjYIAA4zt/7ea57bRjYGiwh+BRMBwAMxKbCQlDACSuARinBys="
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     darktable:multi_priority="0"
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     darktable:blendop_params="gz12eJxjYGBgkGAAgRNODESDBnsIHll8ANNSGQM="/>
    <rdf:li
     darktable:operation="tonecurve"
     darktable:enabled="1"
     darktable:modversion="4"
     darktable:params="gz06eJxjYIAAruuLbU+e8bE9e+aM3c+a/XazZkraJ1jL28u3ZttPyiuyZ2BogOKBASD3gfCsmTPtQBgoBHKLvbGxMRiD3AnCA+XOweo+NiBmh2JsgBGIAZhnK8c="
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     darktable:blendop_params="gz12eJxjYGBgYGUAgRNODESDBnsIHll8AL1aGPA="/>
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     darktable:operation="vibrance"
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     darktable:modversion="2"
     darktable:params="0000c841"
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     darktable:operation="exposure"
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     darktable:params="00000000bd9f1a3eee06fe3f00004842000080c0"
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     darktable:blendop_params="gz12eJxjYGBgkGAAgRNODESDBnsIHll8ANNSGQM="/>
    <rdf:li
     darktable:operation="bilat"
     darktable:enabled="1"
     darktable:modversion="3"
     darktable:params="010000000000803f0000803fcdcc4c3ecdcc4c3e"
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     darktable:blendop_params="gz12eJxjYGBgkGAAgRNODESDBnsIHll8ANNSGQM="/>
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     darktable:operation="sharpen"
     darktable:enabled="1"
     darktable:modversion="1"
     darktable:params="000000400000003f0000003f"
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     darktable:blendop_params="gz12eJxjYGBgkGAAgRNODESDBnsIHll8ANNSGQM="/>
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     darktable:operation="hazeremoval"
     darktable:enabled="1"
     darktable:modversion="1"
     darktable:params="0000003f0000803e"
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     darktable:blendop_version="7"
     darktable:blendop_params="gz12eJxjYGBgkGAAgRNODESDBnsIHll8ANNSGQM="/>
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     darktable:operation="cacorrect"
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     darktable:params="32000000"
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     darktable:blendop_params="gz12eJxjYGBgkGAAgRNODESDBnsIHll8ANNSGQM="/>
    <rdf:li
     darktable:operation="defringe"
     darktable:enabled="1"
     darktable:modversion="1"
     darktable:params="000080400000a04101000000"
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     darktable:blendop_params="gz12eJxjYGBgkGAAgRNODESDBnsIHll8ANNSGQM="/>
    <rdf:li
     darktable:operation="basecurve"
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     darktable:params="gz10eJxjYIAAvf4vtpoTDWzDI3/ZHcxcYOdRnW4vMCvYnoGhAYpHwVAErEhsJiQMAZC4BQCZQAyy"
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     darktable:operation="exposure"
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     darktable:params="00000000bd9f1a3e4f01eb3f00004842000080c0"
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     darktable:blendop_params="gz12eJxjYGBgkGAAgRNODESDBnsIHll8ANNSGQM="/>
    <rdf:li
     darktable:operation="basecurve"
     darktable:enabled="1"
     darktable:modversion="5"
     darktable:params="gz10eJxjYIAAvf4vtpoTDWzDI3/ZHcxcYOdRnW4vMCvYnoGhAYpHwVAErEhsJiQMAZC4BQCZQAyy"
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     darktable:blendop_params="gz12eJxjYGBgkGAAgRNODESDBnsIHll8ANNSGQM="/>
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     darktable:operation="shadhi"
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     darktable:blendop_params="gz12eJxjYGBgEGAAgRNODESDBnsIHll8AMoSGPs="/>
    <rdf:li
     darktable:operation="colisa"
     darktable:enabled="1"
     darktable:modversion="1"
     darktable:params="000000000000000000000000"
     darktable:multi_name=""
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     darktable:blendop_params="gz12eJxjYGBgkGAAgRNODESDBnsIHll8ANNSGQM="/>
    <rdf:li
     darktable:operation="basecurve"
     darktable:enabled="1"
     darktable:modversion="5"
     darktable:params="gz10eJxjYICAYw9O2p6O47cNj/xll3tvs53zwnB7oyJ3ewaGBigeBUMRsCKxmZAwBEDiFgAPOg3x"
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     darktable:operation="exposure"
     darktable:enabled="1"
     darktable:modversion="5"
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     darktable:multi_name=""
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     darktable:blendop_params="gz12eJxjYGBgkGAAgRNODESDBnsIHll8ANNSGQM="/>
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     darktable:operation="shadhi"
     darktable:enabled="1"
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     darktable:blendop_params="gz12eJxjYGBgEGAAgRNODESDBnsIHll8AMoSGPs="/>
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     darktable:operation="exposure"
     darktable:enabled="1"
     darktable:modversion="5"
     darktable:params="000000006619223ed9cee73f00004842000080c0"
     darktable:multi_name=""
     darktable:multi_priority="0"
     darktable:blendop_version="7"
     darktable:blendop_params="gz12eJxjYGBgkGAAgRNODESDBnsIHll8ANNSGQM="/>
    <rdf:li
     darktable:operation="basecurve"
     darktable:enabled="1"
     darktable:modversion="5"
     darktable:params="gz10eJxjYICAYw9O2p6O47cNj/xll3tvs53zwnB7oyJ3ewaGBigeBUMRsCKxmZAwBEDiFgAPOg3x"
     darktable:multi_name=""
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     darktable:blendop_version="7"
     darktable:blendop_params="gz12eJxjYGBgkGAAgRNODESDBnsIHll8ANNSGQM="/>
    <rdf:li
     darktable:operation="exposure"
     darktable:enabled="1"
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     darktable:params="00000000bf7d1d3ed9cee73f00004842000080c0"
     darktable:multi_name=""
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     darktable:blendop_params="gz12eJxjYGBgkGAAgRNODESDBnsIHll8ANNSGQM="/>
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     darktable:operation="exposure"
     darktable:enabled="1"
     darktable:modversion="5"
     darktable:params="00000000bf7d1d3e1058d93f00004842000080c0"
     darktable:multi_name=""
     darktable:multi_priority="0"
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     darktable:blendop_params="gz12eJxjYGBgkGAAgRNODESDBnsIHll8ANNSGQM="/>
    <rdf:li
     darktable:operation="shadhi"
     darktable:enabled="1"
     darktable:modversion="5"
     darktable:params="00000000000048430000000000000000000048c2000000000000484200004842000000007f000000bd37863501000000"
     darktable:multi_name=""
     darktable:multi_priority="0"
     darktable:blendop_version="7"
     darktable:blendop_params="gz12eJxjYGBgEGAAgRNODESDBnsIHll8AMoSGPs="/>
    <rdf:li
     darktable:operation="exposure"
     darktable:enabled="1"
     darktable:modversion="5"
     darktable:params="00000000bf7d1d3eb91ee53f00004842000080c0"
     darktable:multi_name=""
     darktable:multi_priority="0"
     darktable:blendop_version="7"
     darktable:blendop_params="gz12eJxjYGBgkGAAgRNODESDBnsIHll8ANNSGQM="/>
   </rdf:Seq>
  </darktable:history>
 </rdf:Description>
</rdf:RDF>
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Il faut absolument que tu trouves une autre méthode de rétro-éclairer tes films pour les numériser, la trame de l'éclairage est trop visible sous le film. Je n'avais pas remarqué sans la remarque d'Aurélien :

J'ai pris une partie du négatif ou j'ai poussé le contraste et la luminosité. J'ai aussi remarqué dans les Exif que le diaphragme est sur f:1.4, la transmission de l'ouverture se fait bien avec les tube-allonges ?
Tu pourrais aussi essayer de mettre dans des cache-diapositives pour avoir une meilleure planéité des films ou avec un passe vue d'agrandisseur ou un d'un scanner de film. Il existe aussi des cache-diapositives avec verre mais ces verres sont légèrement dépolis et risque de se voir à la numérisation.