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Importer photos en RVB ou cmjn ?

Community Beginner ,
Apr 07, 2020

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Bonjour,

J'ai été très étonné l'année dernière qu'un graphiste me demande pour un document indesign des photos converties  en cmjn...

Perso j'importe mes photos RVB et je  eu dn'ai jamais  eu de problème avec un imprimeur...

Qui a raison dans cette histoire ?

 

Merci

 

Adobe Community Professional
Correct answer by rob day | Adobe Community Professional

The conversion can happen in Photoshop, at Export via the Output tab, or at output in the RIP. If the destination profile (and color intents) are set the same way there will be no difference in the results.

 

A conversion to CMYK in Photoshop or on Export could be a problem if the wrong destination profile is used. However an all RGB workflow could be a problem if there is out-of-gamut color and you don’t have Overprint Preview turned on—in that case you might mistakenly assume the out-of-gamut color is printable.

 

Most online printers (where the output is automated) still request all CMYK PDFs because of gamut problems.

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Importer photos en RVB ou cmjn ?

Community Beginner ,
Apr 07, 2020

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Bonjour,

J'ai été très étonné l'année dernière qu'un graphiste me demande pour un document indesign des photos converties  en cmjn...

Perso j'importe mes photos RVB et je  eu dn'ai jamais  eu de problème avec un imprimeur...

Qui a raison dans cette histoire ?

 

Merci

 

Adobe Community Professional
Correct answer by rob day | Adobe Community Professional

The conversion can happen in Photoshop, at Export via the Output tab, or at output in the RIP. If the destination profile (and color intents) are set the same way there will be no difference in the results.

 

A conversion to CMYK in Photoshop or on Export could be a problem if the wrong destination profile is used. However an all RGB workflow could be a problem if there is out-of-gamut color and you don’t have Overprint Preview turned on—in that case you might mistakenly assume the out-of-gamut color is printable.

 

Most online printers (where the output is automated) still request all CMYK PDFs because of gamut problems.

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Apr 07, 2020 0
Adobe Community Professional ,
Apr 07, 2020

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L'importation d'images en CMJN n'a absolument aucun sens et fait partie de méthodes de travail d'un autre âge… Il faut travailler avec des images en RVB et la conversion quadri se fera au moment de la génération du PDF.

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Apr 07, 2020 0
Community Beginner ,
Apr 07, 2020

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Merci,

C'est bien ce que je pensais mais c'était une personne jeune qui sortait d'une école ... Alors j'ai douté... 

 

 

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Adobe Community Professional ,
Apr 07, 2020

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The conversion can happen in Photoshop, at Export via the Output tab, or at output in the RIP. If the destination profile (and color intents) are set the same way there will be no difference in the results.

 

A conversion to CMYK in Photoshop or on Export could be a problem if the wrong destination profile is used. However an all RGB workflow could be a problem if there is out-of-gamut color and you don’t have Overprint Preview turned on—in that case you might mistakenly assume the out-of-gamut color is printable.

 

Most online printers (where the output is automated) still request all CMYK PDFs because of gamut problems.

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Apr 07, 2020 0
jmlevy LATEST
Adobe Community Professional ,
Apr 07, 2020

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Ça veut donc dire que dans les écoles, il y a encore des gens qui n'ont rien compris et qui enseignent des inepties…

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Apr 07, 2020 0