Pixelisation de mon image sur indesign

Question

Bonjour,

J'ai un gros problème sur mon export indesign. Je dois faire une grande affiche ( 1 m pour 2,5 m de hauteur) avec en fond une image. Le probleme c'est que je ne trouve aucune image qui apres l'impression ne sera pas pixelisé. Je pense que c'est un probleme avec mon indesign, ma photo fait quand meme 5000 x 7000 px et 300 dpi mais elle reste pixelisé en mode taille reelle (avec performance d'affichage au max) comment je peux faire pour que celle ci ne soit pas pixelisée ? J'ai l'impression que c'est une probleme de mon indesign parce que c'est quand meme des photos immense.

Eugene Tyson · Answer

Indesign only shows a proxy of the image - not the image itself

I wrote an article here
https://creativepro.com/high-res-image-look-low-res/

While your image is 5000 x 7000 pixels at 300 dpi, it’s essential to ensure that it’s suitable for the poster size.

At 300 dpi, your image should ideally be able to cover a maximum size of approximately 16.67 inches x 23.33 inches (5000 px / 300 dpi and 7000 px / 300 dpi).

For a 1 m x 2.5 m poster (approximately 39.37 inches x 98.43 inches), your image will not have sufficient resolution, resulting in pixelation upon printing.

Which means your image will be about 72 ppi when printed because it will have to fill the height

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This also brings us to viewing distance

If your viewing distance is going to be more than 5 meters to not see any resolution issues

It also comes down to how much detail is in the image, is it super sharp with lots of lines and angles, or peoples faces, or a foggy scene

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