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Known Participant
Oct 10, 2026 6:38 AM UTC
Question

Comment selectionner precisement un bitmap sur une image crée a partir de plusieur bitmaps superposés

Bonjour,
Probleme sur illustrator impossible a resoudre meme avec l’IA.

Ex : J’ai un graphic sur illustrator composé de 2 bitmaps :
1_bitmap 1 - layer 1 - couleur ROUGE
2_bitmap 2 - layer 2 - couleur BLEU

Chaque bitmap a des zones pleines et des zones transparentes. Et ces 2 bitmpas sont superposés et incorporés.
Lorsque que je veux selectionner le bitmap 2, ou meme si je veux selectionner avec la pipette la couleur BLEU,
ca me selectionne toujours le bitmap qui est au premier plan. Meme si je clique sur la partie transparente, ca me selectionne le bitmap en premier plan.

Dans les anciennes version ca marchait, aujourd’hui ca ne marche pas, comme si illustrator ne prenais plus en compte les transparences dans les bitmap.

Pour le moment, si je dois seelctionner un bitmap precis, je dois bidouiller en verouillant les bitmap un par un que je ne veux pas selectionner.  Ou avec la pipette, je dois decaller chaque bitamp pour pouvoir pointer la couleur sur celui que je veux et ensuite les resupperposer comme avant. Pas pratique du tout.

Merci pour votre aide.

    15 replies

    Known Participant
    Oct 14, 2026 7:54 AM UTC

    Hello both,
    Thanks a lot. I think we found the pb.

    So I tested as you said : I imported my embeded bitmap in illustrator → rasterised 300ppp/bitmap/transparence and it works.
    I think in the past version of illustrator it was It was automatic.

    Just one last question : if i created my bitmap in photoshop in 200ppp, i need to rasterise them in 200pp in illustrator ?

    Thanks a lot !

    D

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    Ton Frederiks
    Community Expert
    Community Expert
    Oct 14, 2026 7:59 AM UTC

    ​@Damien28694733evnn I found the behaviour in the previous version to be the same.  Just one last question : if i created my bitmap in photoshop in 200ppp, i need to rasterise them in 200pp in illustrator ? Yes, use the same resolution as the original, you can see that in the Control Panel when you have the bitmap selected.

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    Known Participant
    Oct 13, 2026 2:49 PM UTC

    i just opened an old graphic i made 2 years ago, see attached, the bitmaps were created with exactly the same technique in photoshop and it’s works. You can select the layer you want and the pipette works too.

    It’s very strange

    Thanks for your help

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    Known Participant
    Oct 13, 2026 2:46 PM UTC

    Hello,

    See attached an example : test_for adobe ,  you will see : you can’t select the layer ‘WHITE’, even with the pipette, you can’t select the color. Its always the first layer GREEN

    thanks


     

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    Ton Frederiks
    Community Expert
    Community Expert
    Oct 13, 2026 3:07 PM UTC

    ​@Damien28694733evnn That confirms what I said above. The selection problem occurs with placed/embedded images, but not with images rasterized in Illustrator. See attached file.

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    CarlosCanto
    Community Expert
    Community Expert
    Oct 12, 2026 6:44 PM UTC

    if I have two items (one on top of another) and wanted to select the one on the bottom I would personally drag to select both of them then Shift+Click the top object to deselect it.

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    Ton Frederiks
    Community Expert
    Community Expert
    Oct 12, 2026 1:13 PM UTC

    ​@Damien28694733evnn I can replicate your problem with placed bitmaps. I tried first to replicate it with rasterized as transparent bitmap objects in Illustrator. That works fine.

    Now I tried it with placed embedded bitmaps from Photoshop and that does not work.

    I can work around it by selecting them one by one and use Object > Rasterize as transparent bitmap.

    Or use the selection method as described by Carlos.

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    Ton Frederiks
    Community Expert
    Community Expert
    Oct 12, 2026 12:50 PM UTC

    ​@Damien28694733evnn Did you embed the images? Linked does not work.

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    Known Participant
    Oct 12, 2026 7:09 AM UTC

    .

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    Known Participant
    Oct 11, 2026 9:25 AM UTC

    Hello Carlos and Frederiks.
    Thanks a lot for your help.

    1_ I reset all the preferences and it still doesn’t work for me. I’m on the 30.8.2

    2_ Carlos, i knew this technic. But it doesn’t work with the pipette.
    And for the selection, it just to cycle through the colors but you can’t select and move the layer you want with this technic.

    Thanks
     

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    CarlosCanto
    Community Expert
    Community Expert
    Oct 12, 2026 6:43 PM UTC

    I’m not sure what you mean, can you show screenshots or share your actual files so we can replicate what you’re trying to do?

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    CarlosCanto
    Community Expert
    Community Expert
    Oct 10, 2026 9:25 PM UTC
    • Press and Hold Cmd/Ctrl key
    • Click on the Top image (red image). You should see the symbol “>” added to the Selection Tool mouse pointer
    • Click again to select the Image below the top image (blue image)
    • keep clicking to select obstructed objects below the current selection
    • release Cmd/Ctrl when you’re done selecting
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    Ton Frederiks
    Community Expert
    Community Expert
    Oct 10, 2026 8:56 PM UTC

    It works for me in 30.8.2 on Mac. Did you try to reset your preferences?

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    Known Participant
    Oct 12, 2026 8:06 AM UTC

    i reset all my preferences and it still doesn’t work. i’m on the 30.8.2
    thanks

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