Hi @PixelFrau
In your original comment, you directly referenced the gallery field documentation. This article shows 100% how to load a gallery field value and loop over the images.
Your code however showed that you did not read this documentation and simply attempted to output the data like the_field('image_gallery');.
Please feel free to point out where in the referenced documentation article it says to do this.
Your attitude will not get you very far in the web. Please be patient and appreciative of FREE help. If someone asks you to ‘re-read’ something, it is because they realize you have missed something obvious, and they want you to learn with your own eyes instead of being spoon fed an answer.
Thanks
E
