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domino2a
Participant
April 7, 2020
Answered

Importer photos en RVB ou cmjn ?

  • April 7, 2020
  • 1 reply
  • 1807 views

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

 

This topic has been closed for replies.
Correct answer rob day

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.

1 reply

jmlevy
Community Expert
jmlevyCommunity Expert
Community Expert
April 7, 2020

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.

D
domino2aAuthor
Participant
April 7, 2020

Merci,

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

 

 

rob day
Community Expert
rob dayCommunity ExpertCorrect answer
Community Expert
April 7, 2020

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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