Pictures using RGB

Forum|Forum|3 years ago
January 12, 2023
5 replies
847 views

Hi everyone !

I am currently working on a resume on InDesign, and I set all the settings so it can be printed in CMYK.

However, it says that some of the pictures I've used are still in RGB. I don't understand, as I put the pictures in Photoshop before to convert them in CMYK, and when I check, everything says that the picture is in CMYK (as you can see on the pictures I've attached)

Do you know how I could resolve that?

Btw, my InDesign is in French on the pictures so I'm sorry about that (CMJN = CMYK and RVB = RGB)

Thanks for your advice!

This topic has been closed for replies.

Peter Spier

Community Expert

You mention this is a resume, but that you are printing in CMYK. I suspect the number of copies you need is far too small to run on a printing press, so mostlikely this is going to be printed digitally, either on your own printer or by a printing service.

While digital printers/copiers that are fed from a RIP, which you might find in a copy shop, accept CMYK data natively, desktop printers and non-RIP-driven printers do not, so you would probably be better off keeping the images in RGB (which is the current recommended workflow, even for press output). If conversion to CMYK needs to happen it is usually best to let it be done at the RIP so colors can be matched using the correct provile for the specific print condition. As Jean Marc says this can also be done during export, but unless the printer has provided the correct profile and instructions to do the conversion, you are better off saving as something like PDF/X-4 which preserves the color information and let the printer do the conversion at print time.

Willi Adelberger

Community Expert

You should place images in RGB in InDesign, noot in CMYK. Convert upon PDF-Export or later, not before. That is the correct way in modern times.

Kevin Stohlmeyer

Community Expert

I wouldn't say it's the "correct" way, but it is A way. We work in a strict print environment where the images are color corrected to CMYK specifics in Photoshop before placing in InDesign. That way we have QC prior to allowing InDesign to convert at the end.

Peter Spier

Community Expert

I still do that, too, on occasion when I know in advance where it will be printed and have the press profile and want to be sure I've got the shadows and highlights as I like them on an important job. The caveat there is to know exactly the print conditions (and I ALWAYS make the conversions to a copy of the image so it can be used again with different output conditions).

rob day

Community Expert

Hi @Nelsya , When you use Export or the legacy Save for Web to save your PNG’s they are converted to RGB even when the Image>Mode is CMYK.

jmlevy

Community Expert

Il ne sert strictement à rien de convertir les images en CMJN avant de les importer dans InDesign. C'est une méthode qu'on utilisait au siècle dernier… Il faut conserver les imges en RVB, les importer telles qu'elles sont en RVB et la conversion en CMJN se fera au moment de l'export en PDF.