Skip to main content
PilouElite
Participant
Jul 1, 2026 10:33 PM UTC
Answered

Problème : impossibilité de superposer grâce à l'outil "incrustation"

Bonjour,
Je fais un peu de photo astro, et pour traiter mon image sur photoshop, il me faut superposer 2 calques.

Quand je créer les 2 calques différents et que je souhaite les superposer, la fonction “incrustation n’est pas disponible (vois pj)

Je suis sur la version photoshop de 2023, quelqu’un aurait il déjà rencontrer ce problème ou pourrait m’aider à le résoudre ?
Bonne soirée

Pilou

 

PS : en pj ce trouve une photo de mes calques et le menu déroulant me permettant de choisir le mode de superposition, je travaille avec 2 calques, l’image d’origine ainsi qu’une copie de cette image avec un filtre “passe-haut” régler à 1,6 pixels

 

    davescm
    davescmCorrect answer
    Community Expert
    Jul 7, 2026 10:08 AM UTC

    ​@PilouElite It looks like you may be working in 32 bits/channel mode. Blending modes are restricted in that mode and ‘Overlay’ is unavailable. To see the full range of blending modes you would need to work in 16 or 8 bits/channel.

    As for arrange, it requires an area that is the same in both images. Unfortunately star fields look similar to noise and are unlikely to be recognised by the software. In that case, manual alignment may be required.

    Dave  

    View reply

    8 replies

    davescm
    Community Expert
    davescmCommunity ExpertCorrect answer
    Community Expert
    Jul 7, 2026 10:08 AM UTC

    ​@PilouElite It looks like you may be working in 32 bits/channel mode. Blending modes are restricted in that mode and ‘Overlay’ is unavailable. To see the full range of blending modes you would need to work in 16 or 8 bits/channel.

    As for arrange, it requires an area that is the same in both images. Unfortunately star fields look similar to noise and are unlikely to be recognised by the software. In that case, manual alignment may be required.

    Dave  

    Translate
      PilouEliteAuthor
      Participant
      Jul 9, 2026 9:46 AM UTC

      J’ai converti mon image en 16bits et en effet, c’était bien le problème !
      Tout fonctionne à présent !
      Je vous remercie à tous pour votre aide !

      Translate
      Trevor.Dennis
      Community Expert
      Trevor.DennisCommunity Expert
      Community Expert
      Jul 7, 2026 12:53 AM UTC

       

      OK, I can see we had an issue with the translation.  I read ‘Overlay’ as overlaying one layer above an another.  I think you were actually referring to the ‘Overlay’ blend mode.  In fact you are describing the high pass filter as a sharpening method.  You need to

      Open your star image

      Copy the background layer (Ctrl J)

      Go Filter > Other > High Pass

      Use a value around 2.0 and press OK

      Set the layer’s Blend Mode to Overlay.

       

       

      The layers will look like this. Note my green highlight.  Use the drop-down arrow and change it from Normal to Overlay. You can try other blend modes like Hard Light and Vivid Light.

       

      I have uploaded the result as a GIF so you can see the before and after

       

      I used a value of 2.0 in High Pass.  The higher the value, the more the sharpening effect.

      Good luck, and let us know how you get on.

       

      Translate
        PilouEliteAuthor
        Participant
        Jul 9, 2026 9:46 AM UTC

        Merci !

         

        Translate
        Trevor.Dennis
        Community Expert
        Trevor.DennisCommunity Expert
        Community Expert
        Jul 1, 2026 11:35 PM UTC

        You probably need to be more precise about how you ‘overlay’ the layers.  A common method is to select all of the layers and go Edit > Auto Align Layers sometimes followed by Edit > Auto Blend Layers using seamless tones and colors.   

        A lot of Photoshop’s menus are contextual, and do not show options that would not work under the current settings.  Select both layers and see if this helps.

         

        Translate
        PilouEliteAuthor
        Participant
        Jul 2, 2026 12:13 AM UTC

        Bonsoir, je vous remercie pour votre réponse.
        J’ai essayé vos recommandations et j’ai rencontré 2 problèmes :

        1. En essayant d’aligner mes calques (celui d’origine + celui avec le filtre “passe-haut”) le logiciel me dit qu’il est impossible car les images ne se chevauchent pas suffisamment (message d’erreur ci-joint)
        1.  J’ai tout de même essayer sans filtre “passe haut” sur le second calque et après avoir aligné puis fusionné les calques, j’étais toujours dans l’impossibilité de superposer le calque d’origine au second calque voire même au nouveau calque créé (le calque fusionné

        Je me demanderai presque si ce n’est pas un problème de mon logiciel.
        Si vous avez des questions sur mon problème n’hésitez pas !
        PilouElite

        Translate
        Trevor.Dennis
        Community Expert
        Trevor.DennisCommunity Expert
        Community Expert
        Jul 1, 2026 11:28 PM UTC

        I’m not seeing an attachment.  You can paste screen shots directly into your post, and this is the preferred method as a lot of people are reluctant to open files from people they don’t know.

        [OK seeing it now. It was just slow to load]

        Translate
        Terms & ConditionsAccessibility statement
        Using the community Terms of use Privacy Cookie preferences Do not sell or share my personal information ad choicesAdChoices