Converting images to CMYK within Publisher (Maybe using Persona Photo)

[Graphical Chris]

Does anyone know if you can convert an RGB image within Publisher to a CMYk image?

I quite often get PDF artwork from clients that I import into Publisher2, but the photos within these are usually RGB and I need them to be CMYK.

Is there an easy way to convert these images all within Publisher2?  I thought maybe I could maybe use the Photo persona, but I can only find how to convert the whole document to CMYK, and that doesn't work - the images all remain as RGB.

Be good if you could select the image and somewhere select to change it to CMYK.  Anyone know if this is possible or do I have to extract the image and convert them through Photo?  This can be time consuming, so I am hoping there is an option to stay within Publisher2.

[lacerto]

Obsolete.

[bbrother]

Hi @Graphical Chris do not convert images color profile to CMYK while working in APub, use RGB.

In APub, when exporting a PDF file, you can:

• choose whether you want to use the document's current color profile or export using a specific color profile
• tell APub to convert all images to the color space chosen on export (as set in the Profile option)

Bellow is a screenshot of the section in PDF export where you can change the color profile settings, and the checkbox that, if checked, will force the image color space conversion.

Once you have complete your editing/creation work and decidee what paper you will print on, select the appropriate color profile settings and perform on-the-fly conversion while generating a new PDF copy that will be used for print.

Check also the Youtube video from the link bellow. It will explain you in an easy manner why you should not convert images to CMYK.
https://www.youtube.com/watch?v=8iiUZzfBeMw

 

[lacerto]

Obsolete.

[GryphonArt]

Well that's an eye-opener for an old print person.

As I have just read this half way through checking that all my images in my newsletter are cmyk... is having half rgb and half cmyk going to confuse matters?

[lacerto]

Obsolete.

[GryphonArt]

Thanks Lacerto. I'm going to send to the printer with the mix and see what they come back with. I've also encountered the problem where Affinity Photo will not convert some images from rgb to cmyk after I've done my colour correction and placed the image, so I'm getting VERY frustrated. I've seen others have this issue too.

[lacerto]

Obsolete.

[pdussart]

Lacerto

What happens with png files ? I need to print in pdf x/3. Or other formats supporting transparent background ? Tif ? Eps?

Regards  Philippe 

 

[wonderings]

On 5/5/2024 at 11:09 AM, GryphonArt said:

Well that's an eye-opener for an old print person.

As I have just read this half way through checking that all my images in my newsletter are cmyk... is having half rgb and half cmyk going to confuse matters?

A RIP will convert the RGB to CMYK. I disagree with working in RGB and only converting on export though. Many images you are not going to notice much of a difference between CMYK and RGB, but there are going to be certain colours that are going to flat out shift significantly. Rather then being shocked when on press, convert and work in CMYK which is the end result anyways. Less surprises with colour shifts from the much wider gamut of RGB then what you get with CMYK. 

[lacerto]

Obsolete.

[Graphical Chris]

But can someone answer the original question instead of spooling information after information about how procedures should be done.  There are way too many reasons to tell someone their way is the correct way - the correct procedure has nothing to do with my question - there is no correct procedure as it all comes down to machinery, workflow, and a whole host of other variables.  And if someone wants to do it the wrong way, so be it.  I just want to know if the program can do a certain function for me.

So, is there any way to select just one image inside of Publisher 2 and convert it to CMYK - regardless of whatever anyone thinks is right or wrong, can this be done?

[lacerto]

Obsolete.

[walt.farrell]

4 hours ago, Graphical Chris said:

So, is there any way to select just one image inside of Publisher 2 and convert it to CMYK - regardless of whatever anyone thinks is right or wrong, can this be done?

Is the image Embedded or Linked?

If Embedded, you can use the Resource Manager to make it Linked, which will create a new file in your file system. You can then select the image, and the Move Tool, and use Edit Image from the Context Toolbar. Then in the new editing tab, change the images Color Space/Profile as desired, and Save. Close the tab, and if needed use the Resource Manager again to Update the image.

If already Linked, you can skip the conversion from Embedded to Linked, and the rest remains the same.

[Graphical Chris]

Hi Lacerto,

thank you, this worked.

 

Hi Walt.Ferrell,

I am interested in understanding your method.  So when you hit the edit button, it essentially opens the image as a new document and when you change its colour space, it wants to save the image, so you can choose to save it over the top of the original linked file, correct? - this is why you say it can't be embedded.  So if you save it over the top of the original file, Publisher will then need a refresh for the linked files. 

[walt.farrell]

Right. You're editing a separate document, so you must Save it. And you must Update from the main document unless you have setup Publisher to automatically refresh updated files (Settings, General).